Re: [RBW] Re: Friction shifting and pulleys again
168 crank RPM??? That sounds slightly insane to me, but to each his own. On Mon, Dec 15, 2014 at 5:23 PM, Patrick Moore bertin...@gmail.com wrote: My gofast has a 15 t small and a 17 t big (both fixed) with a single 46 t ring (and 24 1/2 actual diameter 650C wheels). My ultimate top speed (at least on 2 occasions) was 37.5 mph; my typical downhill top speed is 30 mph; and my typical downhill cruising speed is 25 mph. ~168, 136, 112 crank rpm respectively. Flatland cruising: ~18-19 mph 80 to 85 rpm. Patrick in the very unlikely event that you cared Moore On Mon, Dec 15, 2014 at 4:05 PM, Jim Bronson jim.bron...@gmail.com wrote: I have a big ring of 44 and I use the 11 on almost every ride. I'm pretty happy with 44/28 up front and 11-34 in the back, 9 speed indexed shifting with Microshift bar end, Deore M591-SGS derailer and HG50 cassette. This combination maxes out about 28-29 mph, which is fine for my usage. Smallest gear of 28-34 has not had me walking as of yet. (although, I don't count it out on the several 20% grades around here). -Jim -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten * *[I]n exploring the physical universe man has made no attempt to explore himself. Much of what goes by the name of pleasure is simply an effort to destroy consciousness. If one started by asking, what is man? what are his needs? how can he best express himself? one would discover that merely having the power to avoid work and live one’s life from birth to death in electric light and to the tune of tinned music is not a reason for doing so.”* * -- George Orwell, Pleasure Spots* *Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal. And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not money, I am nothing. And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not money, it profiteth me nothing. Money suffereth long, and it is kind; money envieth not; money vaunteth not itself, is not puffed up, doth not behave unseemly, seeketh not her own, is not easily provoked, thinketh no evil; rejoiceth not in iniquity, but rejoiceth in the truth; beareth all things, hopeth all things, endureth all things. . . . And now abideth faith, hope, money, these three; but the greatest of these is money. * * -- George Orwell, Keep The Apidistra Flying* -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- Keep the metal side up and the rubber side down! -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
180 counting both feet (so half cranks,) is perfectly normal. At least in the barefoot /minimalist running world, a cadence of 180 steps is normal. On a bike, that's three strokes per second -- not hard to accomplish at all. What seems insane to you about 168? I imagine on my QB I max out around 220 or so and that's when I start coasting. But I've never used a computer, just compared it with what I have counted, which is steps per minute when running (I don't anymore, I was just curious where I was. 180-200 steps when running). With abandon, Patrick (We do care about speed and cadence and gearing so don't feel despondent Patrick) Jones. Grin. On Tuesday, December 16, 2014 7:21:32 AM UTC-7, Jim Bronson wrote: 168 crank RPM??? That sounds slightly insane to me, but to each his own. On Mon, Dec 15, 2014 at 5:23 PM, Patrick Moore bert...@gmail.com javascript: wrote: My gofast has a 15 t small and a 17 t big (both fixed) with a single 46 t ring (and 24 1/2 actual diameter 650C wheels). My ultimate top speed (at least on 2 occasions) was 37.5 mph; my typical downhill top speed is 30 mph; and my typical downhill cruising speed is 25 mph. ~168, 136, 112 crank rpm respectively. Flatland cruising: ~18-19 mph 80 to 85 rpm. Patrick in the very unlikely event that you cared Moore On Mon, Dec 15, 2014 at 4:05 PM, Jim Bronson jim.b...@gmail.com javascript: wrote: I have a big ring of 44 and I use the 11 on almost every ride. I'm pretty happy with 44/28 up front and 11-34 in the back, 9 speed indexed shifting with Microshift bar end, Deore M591-SGS derailer and HG50 cassette. This combination maxes out about 28-29 mph, which is fine for my usage. Smallest gear of 28-34 has not had me walking as of yet. (although, I don't count it out on the several 20% grades around here). -Jim -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten * *[I]n exploring the physical universe man has made no attempt to explore himself. Much of what goes by the name of pleasure is simply an effort to destroy consciousness. If one started by asking, what is man? what are his needs? how can he best express himself? one would discover that merely having the power to avoid work and live one’s life from birth to death in electric light and to the tune of tinned music is not a reason for doing so.”* * -- George Orwell, Pleasure Spots* *Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal. And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not money, I am nothing. And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not money, it profiteth me nothing. Money suffereth long, and it is kind; money envieth not; money vaunteth not itself, is not puffed up, doth not behave unseemly, seeketh not her own, is not easily provoked, thinketh no evil; rejoiceth not in iniquity, but rejoiceth in the truth; beareth all things, hopeth all things, endureth all things. . . . And now abideth faith, hope, money, these three; but the greatest of these is money. * * -- George Orwell, Keep The Apidistra Flying* -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bun...@googlegroups.com javascript:. To post to this group, send email to rbw-owne...@googlegroups.com javascript:. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- Keep the metal side up and the rubber side down! -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
Maybe insane is not the right word? How about un-fun? I don't know, it's hard for me to imagine the unabridged joy of a long descent in the mid-upper 30s with legs pulsating not unlike a sewing machine. Just seems to me like it would take all the fun out of it. I've seen it before though, was doing Bike Tour of Colorado in 2006 and saw some fixie transcontinentals going downhill on US50 while I was slowly going uphill the other direction. They were pedaling really, really, REALLY fast. Man we are way off topic here. Haha. -Jim On Tue, Dec 16, 2014 at 8:39 AM, Deacon Patrick lamontg...@mac.com wrote: 180 counting both feet (so half cranks,) is perfectly normal. At least in the barefoot /minimalist running world, a cadence of 180 steps is normal. On a bike, that's three strokes per second -- not hard to accomplish at all. What seems insane to you about 168? I imagine on my QB I max out around 220 or so and that's when I start coasting. But I've never used a computer, just compared it with what I have counted, which is steps per minute when running (I don't anymore, I was just curious where I was. 180-200 steps when running). With abandon, Patrick (We do care about speed and cadence and gearing so don't feel despondent Patrick) Jones. Grin. On Tuesday, December 16, 2014 7:21:32 AM UTC-7, Jim Bronson wrote: 168 crank RPM??? That sounds slightly insane to me, but to each his own. On Mon, Dec 15, 2014 at 5:23 PM, Patrick Moore bert...@gmail.com wrote: My gofast has a 15 t small and a 17 t big (both fixed) with a single 46 t ring (and 24 1/2 actual diameter 650C wheels). My ultimate top speed (at least on 2 occasions) was 37.5 mph; my typical downhill top speed is 30 mph; and my typical downhill cruising speed is 25 mph. ~168, 136, 112 crank rpm respectively. Flatland cruising: ~18-19 mph 80 to 85 rpm. Patrick in the very unlikely event that you cared Moore On Mon, Dec 15, 2014 at 4:05 PM, Jim Bronson jim.b...@gmail.com wrote: I have a big ring of 44 and I use the 11 on almost every ride. I'm pretty happy with 44/28 up front and 11-34 in the back, 9 speed indexed shifting with Microshift bar end, Deore M591-SGS derailer and HG50 cassette. This combination maxes out about 28-29 mph, which is fine for my usage. Smallest gear of 28-34 has not had me walking as of yet. (although, I don't count it out on the several 20% grades around here). -Jim -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten * *[I]n exploring the physical universe man has made no attempt to explore himself. Much of what goes by the name of pleasure is simply an effort to destroy consciousness. If one started by asking, what is man? what are his needs? how can he best express himself? one would discover that merely having the power to avoid work and live one’s life from birth to death in electric light and to the tune of tinned music is not a reason for doing so.”* * -- George Orwell, Pleasure Spots* *Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal. And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not money, I am nothing. And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not money, it profiteth me nothing. Money suffereth long, and it is kind; money envieth not; money vaunteth not itself, is not puffed up, doth not behave unseemly, seeketh not her own, is not easily provoked, thinketh no evil; rejoiceth not in iniquity, but rejoiceth in the truth; beareth all things, hopeth all things, endureth all things. . . . And now abideth faith, hope, money, these three; but the greatest of these is money. * * -- George Orwell, Keep The Apidistra Flying* -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bun...@googlegroups.com. To post to this group, send email to rbw-owne...@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- Keep the metal side up and the rubber side down! -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this
Re: [RBW] Re: Friction shifting and pulleys again
168 rpm at the crank isn't fun at all, except to boast about; and even then it's not all that boast-worthy: others reach much higher r's pm. But 112-120 isn't hard at all to maintain -- I used to maintain that -- well, 104 -- 112 actually -- in flatland cruising back in the days when I was young and supple and could maintain 20+ mph in my favorite 64-65 gear. That was before riding fixed made me into a masher. On Tue, Dec 16, 2014 at 7:45 AM, Jim Bronson jim.bron...@gmail.com wrote: Maybe insane is not the right word? How about un-fun? I don't know, it's hard for me to imagine the unabridged joy of a long descent in the mid-upper 30s with legs pulsating not unlike a sewing machine. Just seems to me like it would take all the fun out of it. I've seen it before though, was doing Bike Tour of Colorado in 2006 and saw some fixie transcontinentals going downhill on US50 while I was slowly going uphill the other direction. They were pedaling really, really, REALLY fast. Man we are way off topic here. Haha. -Jim On Tue, Dec 16, 2014 at 8:39 AM, Deacon Patrick lamontg...@mac.com wrote: 180 counting both feet (so half cranks,) is perfectly normal. At least in the barefoot /minimalist running world, a cadence of 180 steps is normal. On a bike, that's three strokes per second -- not hard to accomplish at all. What seems insane to you about 168? I imagine on my QB I max out around 220 or so and that's when I start coasting. But I've never used a computer, just compared it with what I have counted, which is steps per minute when running (I don't anymore, I was just curious where I was. 180-200 steps when running). With abandon, Patrick (We do care about speed and cadence and gearing so don't feel despondent Patrick) Jones. Grin. On Tuesday, December 16, 2014 7:21:32 AM UTC-7, Jim Bronson wrote: 168 crank RPM??? That sounds slightly insane to me, but to each his own. On Mon, Dec 15, 2014 at 5:23 PM, Patrick Moore bert...@gmail.com wrote: My gofast has a 15 t small and a 17 t big (both fixed) with a single 46 t ring (and 24 1/2 actual diameter 650C wheels). My ultimate top speed (at least on 2 occasions) was 37.5 mph; my typical downhill top speed is 30 mph; and my typical downhill cruising speed is 25 mph. ~168, 136, 112 crank rpm respectively. Flatland cruising: ~18-19 mph 80 to 85 rpm. Patrick in the very unlikely event that you cared Moore On Mon, Dec 15, 2014 at 4:05 PM, Jim Bronson jim.b...@gmail.com wrote: I have a big ring of 44 and I use the 11 on almost every ride. I'm pretty happy with 44/28 up front and 11-34 in the back, 9 speed indexed shifting with Microshift bar end, Deore M591-SGS derailer and HG50 cassette. This combination maxes out about 28-29 mph, which is fine for my usage. Smallest gear of 28-34 has not had me walking as of yet. (although, I don't count it out on the several 20% grades around here). -Jim -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten * *[I]n exploring the physical universe man has made no attempt to explore himself. Much of what goes by the name of pleasure is simply an effort to destroy consciousness. If one started by asking, what is man? what are his needs? how can he best express himself? one would discover that merely having the power to avoid work and live one’s life from birth to death in electric light and to the tune of tinned music is not a reason for doing so.”* * -- George Orwell, Pleasure Spots* *Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal. And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not money, I am nothing. And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not money, it profiteth me nothing. Money suffereth long, and it is kind; money envieth not; money vaunteth not itself, is not puffed up, doth not behave unseemly, seeketh not her own, is not easily provoked, thinketh no evil; rejoiceth not in iniquity, but rejoiceth in the truth; beareth all things, hopeth all things, endureth all things. . . . And now abideth faith, hope, money, these three; but the greatest of these is money. * * -- George Orwell, Keep The Apidistra Flying* -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bun...@googlegroups.com. To post to this group, send email to rbw-owne...@googlegroups.com.
Re: [RBW] Re: Friction shifting and pulleys again
I have a big ring of 44 and I use the 11 on almost every ride. I'm pretty happy with 44/28 up front and 11-34 in the back, 9 speed indexed shifting with Microshift bar end, Deore M591-SGS derailer and HG50 cassette. This combination maxes out about 28-29 mph, which is fine for my usage. Smallest gear of 28-34 has not had me walking as of yet. (although, I don't count it out on the several 20% grades around here). -Jim On Fri, Dec 12, 2014 at 3:51 PM, Bill Lindsay tapebu...@gmail.com wrote: It's true that if you max out at 100rpm for example, that your 46x12 has a max pedalling speed of about 30mph, but your 46x11 will allow you to pedal up to about 32mph. On Friday, December 12, 2014 1:38:48 PM UTC-8, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. Yes, I admit that the 11 is only a downhill toy and otherwise useless. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) Doug -Original Message- From: rbw-owne...@googlegroups.com [mailto:rbw-owne...@googlegroups.com] On Behalf Of Steve Palincsar Sent: Friday, December 12, 2014 1:08 PM To: rbw-owne...@googlegroups.com Subject: Re: [RBW] Re: Friction shifting and pulleys again On 12/12/2014 03:57 PM, Doug Williams wrote: Well I do get hills where I live, and especially when I head north. My knees (and the rest of my body) are not getting any younger. So I like a full range of gears. I had decided to go with 8 gears for better friction shifting, and I think I should stick with that because most people report problems when friction shifting 9. But then I see the 9 speed Shimano HG61 with bh-group sprocket teeth combination: 12-14-16-18-21-24-28-32-36T. Hey...remove the 12, replace it with an 11 (and an 11 lock ring) and you get 11-14-16-18-21-24-28-32-36T. Since the 11 would just be my whoo hoo downhill gear I wouldn't mind the 3 tooth jump going from 14 to 11 while going down hill. If I can't get up the next hill with a 24 in front and a 36 in the rear (17.3 gear inches with 650b)...well...let's not say it. My goodness. I see that cassette and I think how nice it would be to remove the 12 and replace it with a first position 13... 12's too high already, and what on earth would I do with an 11? -- You received this message because you are subscribed to a topic in the Google Groups RBW Owners Bunch group. To unsubscribe from this topic, visit https://groups.google.com/d/ topic/rbw-owners-bunch/odl1v4BCeac/unsubscribe. To unsubscribe from this group and all its topics, send an email to rbw-owners-bun...@googlegroups.com. To post to this group, send email to rbw-owne...@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- Keep the metal side up and the rubber side down! -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
My gofast has a 15 t small and a 17 t big (both fixed) with a single 46 t ring (and 24 1/2 actual diameter 650C wheels). My ultimate top speed (at least on 2 occasions) was 37.5 mph; my typical downhill top speed is 30 mph; and my typical downhill cruising speed is 25 mph. ~168, 136, 112 crank rpm respectively. Flatland cruising: ~18-19 mph 80 to 85 rpm. Patrick in the very unlikely event that you cared Moore On Mon, Dec 15, 2014 at 4:05 PM, Jim Bronson jim.bron...@gmail.com wrote: I have a big ring of 44 and I use the 11 on almost every ride. I'm pretty happy with 44/28 up front and 11-34 in the back, 9 speed indexed shifting with Microshift bar end, Deore M591-SGS derailer and HG50 cassette. This combination maxes out about 28-29 mph, which is fine for my usage. Smallest gear of 28-34 has not had me walking as of yet. (although, I don't count it out on the several 20% grades around here). -Jim -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten * *[I]n exploring the physical universe man has made no attempt to explore himself. Much of what goes by the name of pleasure is simply an effort to destroy consciousness. If one started by asking, what is man? what are his needs? how can he best express himself? one would discover that merely having the power to avoid work and live one’s life from birth to death in electric light and to the tune of tinned music is not a reason for doing so.”* * -- George Orwell, Pleasure Spots* *Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal. And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not money, I am nothing. And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not money, it profiteth me nothing. Money suffereth long, and it is kind; money envieth not; money vaunteth not itself, is not puffed up, doth not behave unseemly, seeketh not her own, is not easily provoked, thinketh no evil; rejoiceth not in iniquity, but rejoiceth in the truth; beareth all things, hopeth all things, endureth all things. . . . And now abideth faith, hope, money, these three; but the greatest of these is money. * * -- George Orwell, Keep The Apidistra Flying* -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
One thing to note - recent xt model derailers (at least mine) no longer have the floating upper pulley. So flipping pulleys will have no effect. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
Hmmm...interesting. If true, this could save me some hassle. Thanks for the tip, when I get my new bike, I'll definitely check before I start messing with the pulleys. Doug Williams On Sunday, December 14, 2014 9:03:19 AM UTC-8, Clayton.sf wrote: One thing to note - recent xt model derailers (at least mine) no longer have the floating upper pulley. So flipping pulleys will have no effect. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
On 12/12/2014 03:57 PM, Doug Williams wrote: Well I do get hills where I live, and especially when I head north. My knees (and the rest of my body) are not getting any younger. So I like a full range of gears. I had decided to go with 8 gears for better friction shifting, and I think I should stick with that because most people report problems when friction shifting 9. But then I see the 9 speed Shimano HG61 with bh-group sprocket teeth combination: 12-14-16-18-21-24-28-32-36T. Hey...remove the 12, replace it with an 11 (and an 11 lock ring) and you get 11-14-16-18-21-24-28-32-36T. Since the 11 would just be my whoo hoo downhill gear I wouldn't mind the 3 tooth jump going from 14 to 11 while going down hill. If I can't get up the next hill with a 24 in front and a 36 in the rear (17.3 gear inches with 650b)...well...let's not say it. My goodness. I see that cassette and I think how nice it would be to remove the 12 and replace it with a first position 13... 12's too high already, and what on earth would I do with an 11? -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
RE: [RBW] Re: Friction shifting and pulleys again
Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. Yes, I admit that the 11 is only a downhill toy and otherwise useless. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) Doug -Original Message- From: rbw-owners-bunch@googlegroups.com [mailto:rbw-owners-bunch@googlegroups.com] On Behalf Of Steve Palincsar Sent: Friday, December 12, 2014 1:08 PM To: rbw-owners-bunch@googlegroups.com Subject: Re: [RBW] Re: Friction shifting and pulleys again On 12/12/2014 03:57 PM, Doug Williams wrote: Well I do get hills where I live, and especially when I head north. My knees (and the rest of my body) are not getting any younger. So I like a full range of gears. I had decided to go with 8 gears for better friction shifting, and I think I should stick with that because most people report problems when friction shifting 9. But then I see the 9 speed Shimano HG61 with bh-group sprocket teeth combination: 12-14-16-18-21-24-28-32-36T. Hey...remove the 12, replace it with an 11 (and an 11 lock ring) and you get 11-14-16-18-21-24-28-32-36T. Since the 11 would just be my whoo hoo downhill gear I wouldn't mind the 3 tooth jump going from 14 to 11 while going down hill. If I can't get up the next hill with a 24 in front and a 36 in the rear (17.3 gear inches with 650b)...well...let's not say it. My goodness. I see that cassette and I think how nice it would be to remove the 12 and replace it with a first position 13... 12's too high already, and what on earth would I do with an 11? -- You received this message because you are subscribed to a topic in the Google Groups RBW Owners Bunch group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/rbw-owners-bunch/odl1v4BCeac/unsubscribe. To unsubscribe from this group and all its topics, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
It's true that if you max out at 100rpm for example, that your 46x12 has a max pedalling speed of about 30mph, but your 46x11 will allow you to pedal up to about 32mph. On Friday, December 12, 2014 1:38:48 PM UTC-8, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. Yes, I admit that the 11 is only a downhill toy and otherwise useless. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) Doug -Original Message- From: rbw-owne...@googlegroups.com javascript: [mailto: rbw-owne...@googlegroups.com javascript:] On Behalf Of Steve Palincsar Sent: Friday, December 12, 2014 1:08 PM To: rbw-owne...@googlegroups.com javascript: Subject: Re: [RBW] Re: Friction shifting and pulleys again On 12/12/2014 03:57 PM, Doug Williams wrote: Well I do get hills where I live, and especially when I head north. My knees (and the rest of my body) are not getting any younger. So I like a full range of gears. I had decided to go with 8 gears for better friction shifting, and I think I should stick with that because most people report problems when friction shifting 9. But then I see the 9 speed Shimano HG61 with bh-group sprocket teeth combination: 12-14-16-18-21-24-28-32-36T. Hey...remove the 12, replace it with an 11 (and an 11 lock ring) and you get 11-14-16-18-21-24-28-32-36T. Since the 11 would just be my whoo hoo downhill gear I wouldn't mind the 3 tooth jump going from 14 to 11 while going down hill. If I can't get up the next hill with a 24 in front and a 36 in the rear (17.3 gear inches with 650b)...well...let's not say it. My goodness. I see that cassette and I think how nice it would be to remove the 12 and replace it with a first position 13... 12's too high already, and what on earth would I do with an 11? -- You received this message because you are subscribed to a topic in the Google Groups RBW Owners Bunch group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/rbw-owners-bunch/odl1v4BCeac/unsubscribe. To unsubscribe from this group and all its topics, send an email to rbw-owners-bun...@googlegroups.com javascript:. To post to this group, send email to rbw-owne...@googlegroups.com javascript:. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
At 30+ mph, I just tuck and enjoy the ride! Of course on mountain passes that are miles long, those middling speeds are what you get in the flats while you coast as long as you can. Grin. Doug, I nearly lost my mind on Sheldon's gear calculator figuring out how to gear my Quickbeam. Playing with 2x8 or 3x8 is cake! If you want to go 9 speed, I think you'll be just fine. But learning to stand and pedal is a good thing too, and builds those knees so they work better longer. Grin. With abandon, Patrick On Friday, December 12, 2014 2:51:01 PM UTC-7, Bill Lindsay wrote: It's true that if you max out at 100rpm for example, that your 46x12 has a max pedalling speed of about 30mph, but your 46x11 will allow you to pedal up to about 32mph. On Friday, December 12, 2014 1:38:48 PM UTC-8, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. Yes, I admit that the 11 is only a downhill toy and otherwise useless. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) Doug -Original Message- From: rbw-owne...@googlegroups.com [mailto:rbw-owne...@googlegroups.com] On Behalf Of Steve Palincsar Sent: Friday, December 12, 2014 1:08 PM To: rbw-owne...@googlegroups.com Subject: Re: [RBW] Re: Friction shifting and pulleys again On 12/12/2014 03:57 PM, Doug Williams wrote: Well I do get hills where I live, and especially when I head north. My knees (and the rest of my body) are not getting any younger. So I like a full range of gears. I had decided to go with 8 gears for better friction shifting, and I think I should stick with that because most people report problems when friction shifting 9. But then I see the 9 speed Shimano HG61 with bh-group sprocket teeth combination: 12-14-16-18-21-24-28-32-36T. Hey...remove the 12, replace it with an 11 (and an 11 lock ring) and you get 11-14-16-18-21-24-28-32-36T. Since the 11 would just be my whoo hoo downhill gear I wouldn't mind the 3 tooth jump going from 14 to 11 while going down hill. If I can't get up the next hill with a 24 in front and a 36 in the rear (17.3 gear inches with 650b)...well...let's not say it. My goodness. I see that cassette and I think how nice it would be to remove the 12 and replace it with a first position 13... 12's too high already, and what on earth would I do with an 11? -- You received this message because you are subscribed to a topic in the Google Groups RBW Owners Bunch group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/rbw-owners-bunch/odl1v4BCeac/unsubscribe. To unsubscribe from this group and all its topics, send an email to rbw-owners-bun...@googlegroups.com. To post to this group, send email to rbw-owne...@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
On 12/12/2014 04:38 PM, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) I have no difficulty at all telling the difference between 13-14-15, the three 1-tooth gaps on my 9 speed cassettes. I don't think finesse has anything to do with it, but running at a typical 90 rpm or so cadence might do. Also, riding in rolling countryside with many short dips and rises but virtually nothing even approaching a half-mile long descent does too. In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. It is possible to remove the rivets or bolts or whatever that attach sprockets together, albeit with some difficulty. I haven't seen one of those 12-36 cassettes, so I don't have any idea how it's made; the 12-27s that form the basis for the custom 9s 13-30s I use have a couple of attached groups but also several loose sprockets. Yes, I admit that the 11 is only a downhill toy and otherwise useless. For me, worse than a toy: a spacer with teeth, and not useful for what passes for downhills where I ride. By the time I've got a 48x13 (i.e., 97-100 inches) spun up to around 120 rpm and I'm doing 34 or 35 mph, in the terrain where I ride I'll have run out of descent and it's time to brace for the bridge and the expansion joints and approach the climb out of the stream gully and back to the level. 100 inches spun right up is very useful for that: lots of rpm to work with as you work your way down through the gears. Approach a descent like that in too big a gear and you'll have nothing at all to spend before it's time to start downshifting, and at very low rpms those downshifts are slower and more difficult than they need to be. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. So you are saying a 125 gear is fun somehow. This I do not get. Where is the fun in a lumbering slow cadence? That doesn't feel fast to me. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. Ah, Gravity: the Goddess I worship every time I go riding. I have what is known as a Special Relationship with Gravity, and there are few who descend as quickly or get up to speed with the rapidity of a safe being pushed off the top of the Chrysler Building as do I. As for reaching dangerous speeds, every few years Bike Virginia has taken me into mountainous terrain in the Appalachians. I've learned that as soon as I begin to descend, my mental juke box starts playing the opening bars of The Wreck of Old 97... The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) I'm surprised you can tolerate the enormous gap between the 11 and the 14. That's got to be around a 30 inch gap. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
Just to toss more grit into the gears, Miche makes Shimano-compatible outers (perhaps Campy ones too) up to 16. I run a 16-26 9 speed on my ram (with compact 52/38 rings) (very nicely shifted with Silver dt levers pulling a 7400 DA rd. I've several times crammed a non-outer-position-specific 14 or 15 onto the last mm of splines of a 8+ speed freehub body. The jump between a 13 and a 14 with a 46 outer is about 8 gear inches; plenty big enough for many to discern. On Fri, Dec 12, 2014 at 2:38 PM, Doug Williams salguod3791willi...@gmail.com wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. Yes, I admit that the 11 is only a downhill toy and otherwise useless. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) Doug -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
Steve, Maybe I'm reading Sheldon's Gear Calculator incorrectly, but I get 108.7 gear inches with 46x11 and 650b wheels. So yes...a little high, but not anything close to 125 (which I admit would be silly). Also, the 14 gives me 85.4 gear inches, so the gap between 11 and 14 would be 23.3 gear inches, not 30. Maybe tough on level ground, but an easy shift when you are already going downhill. Again, the 11 is just a fun downhill gear for me and I'm going to shift back out of it well before the next hill. In any event, you like close gears for a precise cadence and I like wide ranging gears to handle whatever comes my way. To each his own. I usually ride solo, and even in a group I'm not trying to hang on anybody's wheel. I have no need for a precise cadence. I usually spin about 90 and sometimes over 100. But I almost never spin 120. At 100 rpm, the 11T gives me 32.3 MPH. Plenty fast enough, but not death defying. The Bike Snob defines Fred Whoo Hoo Speed as 46 MPH. No chance of me spinning ANY gear anywhere near that fast. :-) Even without spinning, I wouldn't allow myself to coast that fast. I would definitely be on brakes well before Fred Whoo Hoo Speed. Doug On Friday, December 12, 2014 3:08:35 PM UTC-8, Steve Palincsar wrote: On 12/12/2014 04:38 PM, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) I have no difficulty at all telling the difference between 13-14-15, the three 1-tooth gaps on my 9 speed cassettes. I don't think finesse has anything to do with it, but running at a typical 90 rpm or so cadence might do. Also, riding in rolling countryside with many short dips and rises but virtually nothing even approaching a half-mile long descent does too. In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. It is possible to remove the rivets or bolts or whatever that attach sprockets together, albeit with some difficulty. I haven't seen one of those 12-36 cassettes, so I don't have any idea how it's made; the 12-27s that form the basis for the custom 9s 13-30s I use have a couple of attached groups but also several loose sprockets. Yes, I admit that the 11 is only a downhill toy and otherwise useless. For me, worse than a toy: a spacer with teeth, and not useful for what passes for downhills where I ride. By the time I've got a 48x13 (i.e., 97-100 inches) spun up to around 120 rpm and I'm doing 34 or 35 mph, in the terrain where I ride I'll have run out of descent and it's time to brace for the bridge and the expansion joints and approach the climb out of the stream gully and back to the level. 100 inches spun right up is very useful for that: lots of rpm to work with as you work your way down through the gears. Approach a descent like that in too big a gear and you'll have nothing at all to spend before it's time to start downshifting, and at very low rpms those downshifts are slower and more difficult than they need to be. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. So you are saying a 125 gear is fun somehow. This I do not get. Where is the fun in a lumbering slow cadence? That doesn't feel fast to me. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. Ah, Gravity: the Goddess I worship every time I go riding. I have what is known as a Special Relationship with Gravity, and there are few who descend as quickly or get up to speed with the rapidity of a safe being pushed off the top of the Chrysler Building as do I. As for reaching dangerous speeds, every few years Bike Virginia has taken me into mountainous terrain in the Appalachians. I've learned that as soon as I begin to descend, my mental juke box starts playing the opening bars of The Wreck of Old 97... The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) I'm surprised you can tolerate the enormous gap between the 11 and the 14. That's got to be around a 30 inch gap. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
Re: [RBW] Re: Friction shifting and pulleys again
Gearing is almost as fun to calculate and talk about as to ride. The jump between an 11 and a 14 (46 t ring -- I assume few on this list are using 53s with any normal cassette) is 24. PDB. EDB would be the 28 between them using the 53. I love gear fiddling. Even though I ride mostly fixed on road, and love it best, and even though, when I ride multiple gear coasters, I use mostly the 70 and the 65 on road, the 64 and the 61 on our flat but sandy bosque dirt (yes I can tell the 3.5 difference between my 17 and 18; the 61 is very nice for a slightly lower dirt road gear when the sand is slightly heavier) -- even given this, I know every single cog's gear inch equivalent on all of my bikes. Even for hub geared bikes. For almost 3 decades I've made my own gear charts, manually at first, though now Excel makes it easier -- in almost 30 years of fretting about gears I've rarely used a stock gearing combo. My own penchant is for close ratios between (road) 60 and 75in rolling terrain ABQ and adjacent Rio Rancho, NM), with the rest just gravy -- my outer cogs frankly act as much as spacers, to get the cruising gears in the middle, as they do for higher ratios. When you ride fixed so much, even simple coasting is so much faster downhill. On Fri, Dec 12, 2014 at 4:08 PM, Steve Palincsar palin...@his.com wrote: On 12/12/2014 04:38 PM, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) I have no difficulty at all telling the difference between 13-14-15, the three 1-tooth gaps on my 9 speed cassettes. I don't think finesse has anything to do with it, but running at a typical 90 rpm or so cadence might do. Also, riding in rolling countryside with many short dips and rises but virtually nothing even approaching a half-mile long descent does too. In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. It is possible to remove the rivets or bolts or whatever that attach sprockets together, albeit with some difficulty. I haven't seen one of those 12-36 cassettes, so I don't have any idea how it's made; the 12-27s that form the basis for the custom 9s 13-30s I use have a couple of attached groups but also several loose sprockets. Yes, I admit that the 11 is only a downhill toy and otherwise useless. For me, worse than a toy: a spacer with teeth, and not useful for what passes for downhills where I ride. By the time I've got a 48x13 (i.e., 97-100 inches) spun up to around 120 rpm and I'm doing 34 or 35 mph, in the terrain where I ride I'll have run out of descent and it's time to brace for the bridge and the expansion joints and approach the climb out of the stream gully and back to the level. 100 inches spun right up is very useful for that: lots of rpm to work with as you work your way down through the gears. Approach a descent like that in too big a gear and you'll have nothing at all to spend before it's time to start downshifting, and at very low rpms those downshifts are slower and more difficult than they need to be. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. So you are saying a 125 gear is fun somehow. This I do not get. Where is the fun in a lumbering slow cadence? That doesn't feel fast to me. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. Ah, Gravity: the Goddess I worship every time I go riding. I have what is known as a Special Relationship with Gravity, and there are few who descend as quickly or get up to speed with the rapidity of a safe being pushed off the top of the Chrysler Building as do I. As for reaching dangerous speeds, every few years Bike Virginia has taken me into mountainous terrain in the Appalachians. I've learned that as soon as I begin to descend, my mental juke box starts playing the opening bars of The Wreck of Old 97... The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) I'm surprised you can tolerate the enormous gap between the 11 and the 14. That's got to be around a 30 inch gap. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services.
Re: [RBW] Re: Friction shifting and pulleys again
I meant to specify a nominally 27 700C wheel. On Fri, Dec 12, 2014 at 5:32 PM, Patrick Moore bertin...@gmail.com wrote: Gearing is almost as fun to calculate and talk about as to ride. The jump between an 11 and a 14 (46 t ring -- I assume few on this list are using 53s with any normal cassette) is 24. PDB. EDB would be the 28 between them using the 53. I love gear fiddling. Even though I ride mostly fixed on road, and love it best, and even though, when I ride multiple gear coasters, I use mostly the 70 and the 65 on road, the 64 and the 61 on our flat but sandy bosque dirt (yes I can tell the 3.5 difference between my 17 and 18; the 61 is very nice for a slightly lower dirt road gear when the sand is slightly heavier) -- even given this, I know every single cog's gear inch equivalent on all of my bikes. Even for hub geared bikes. For almost 3 decades I've made my own gear charts, manually at first, though now Excel makes it easier -- in almost 30 years of fretting about gears I've rarely used a stock gearing combo. My own penchant is for close ratios between (road) 60 and 75in rolling terrain ABQ and adjacent Rio Rancho, NM), with the rest just gravy -- my outer cogs frankly act as much as spacers, to get the cruising gears in the middle, as they do for higher ratios. When you ride fixed so much, even simple coasting is so much faster downhill. On Fri, Dec 12, 2014 at 4:08 PM, Steve Palincsar palin...@his.com wrote: On 12/12/2014 04:38 PM, Doug Williams wrote: Steve, I suppose you could do that, but then 13 and 14 are awfully close together. I couldn't even tell the difference as I lack your finesse. :-) I have no difficulty at all telling the difference between 13-14-15, the three 1-tooth gaps on my 9 speed cassettes. I don't think finesse has anything to do with it, but running at a typical 90 rpm or so cadence might do. Also, riding in rolling countryside with many short dips and rises but virtually nothing even approaching a half-mile long descent does too. In any event, if you are going to replace a sprocket, the 12 is the only free one (not already attached to a group). So the 12 is the easy one to swap. It is possible to remove the rivets or bolts or whatever that attach sprockets together, albeit with some difficulty. I haven't seen one of those 12-36 cassettes, so I don't have any idea how it's made; the 12-27s that form the basis for the custom 9s 13-30s I use have a couple of attached groups but also several loose sprockets. Yes, I admit that the 11 is only a downhill toy and otherwise useless. For me, worse than a toy: a spacer with teeth, and not useful for what passes for downhills where I ride. By the time I've got a 48x13 (i.e., 97-100 inches) spun up to around 120 rpm and I'm doing 34 or 35 mph, in the terrain where I ride I'll have run out of descent and it's time to brace for the bridge and the expansion joints and approach the climb out of the stream gully and back to the level. 100 inches spun right up is very useful for that: lots of rpm to work with as you work your way down through the gears. Approach a descent like that in too big a gear and you'll have nothing at all to spend before it's time to start downshifting, and at very low rpms those downshifts are slower and more difficult than they need to be. But toys are toys and since I haven't grown up by now, it is a sure bet that I'm not going to. So you are saying a 125 gear is fun somehow. This I do not get. Where is the fun in a lumbering slow cadence? That doesn't feel fast to me. Fortunately, I'm too weak to spin the 11 fast enough to reach a dangerous speed anyway. Only gravity can do that for me now. Ah, Gravity: the Goddess I worship every time I go riding. I have what is known as a Special Relationship with Gravity, and there are few who descend as quickly or get up to speed with the rapidity of a safe being pushed off the top of the Chrysler Building as do I. As for reaching dangerous speeds, every few years Bike Virginia has taken me into mountainous terrain in the Appalachians. I've learned that as soon as I begin to descend, my mental juke box starts playing the opening bars of The Wreck of Old 97... The 11 fills a niche to boost me a little faster on a very mild hill before I stop spinning and start braking on a bigger hill. :-) I'm surprised you can tolerate the enormous gap between the 11 and the 14. That's got to be around a 30 inch gap. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout. -- Resumes, LinkedIn
