[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-03 Thread Garth
Sometimes you look around and see everyone changing this and that and you want to join in, sure who doesn't get it ? Sometimes you just look around and watch it all take place and have a damn good laugh because despite all the rearranging nothing really changes ! Maybe you could ju

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Peter Adler
Sheldon absolutely does have 584 wheels in the Gear Calculator, but he refers to them as "650 x 38b 650B/38x584 650B", so they're easy to miss. Peter "only two tubular options, too" Adler Berkeley, CA/USA On Thursday, June 2, 2016 at 9:30:19 PM UTC-7, Lungimsam wrote: > > So, I think this would

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread GAJett
I've run HS+G for about 40 years after reading an article by Frank Berto(?) in Bicycling. I still strongly prefer HS+G over any other gearing - a very wide range with little duplication. * When shifting between the large & middle rings I have ratios like a straight block racing cassette (yet

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Patrick Moore
I've very often set up my cassette with a 6 t jump between the biggest cogs; no problem with a good derailleur, especially when the big cog is a bailout. "Too much thinking". Nah, it's fun to worry about gearing. On Thu, Jun 2, 2016 at 10:30 PM, Lungimsam wrote: > > > But that would give me the

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Lungimsam
So, I think this would work (although the Sheldon calculator has no 584 wheel size, I used 27" nominal as option): 24/40 with an (11-13-15-18-21-24-28-34) 8-speed cassette would give me the ratios I need. That is like all the ratios of my current middle and outer rings combined with similar jum

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Steve Palincsar
On 06/02/2016 06:43 PM, Ron Mc wrote: I quit smoking pot in the previous century. A wide-7 cyclotouriste, half-steps + granny, is every bit as versatile as a modern compact double with a 10-speed cassette, and even functions easier in rolling terrain. Not sure I get the smoking pot refer

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
I quit smoking pot in the previous century. A wide-7 cyclotouriste, half-steps + granny, is every bit as versatile as a modern compact double with a 10-speed cassette, and even functions easier in rolling terrain. On Thursday, June 2, 2016 at 3:10:41 PM UTC-5, Steve Palincsar wrote: > > > >

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Steve Palincsar
On 06/02/2016 01:48 PM, William deRosset wrote: One other note: If going to a HS+G, you would maximize the 7s range (or really, pick cogs to approximate a reasonable full step), and chainrings (centered around your JRA gear just like with the compact double outer ring) with half that range

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Steve Palincsar
On 06/02/2016 09:09 AM, Ron Mc wrote: and it works just as well today as it ever did, with all the versatility of a compact double x10 What 10 speed cassettes are you using that are properly spaced for half-stepping? Usually anything 8 and above was designed for crossover, with gears space

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread William deRosset
One other note: If going to a HS+G, you would maximize the 7s range (or really, pick cogs to approximate a reasonable full step), and chainrings (centered around your JRA gear just like with the compact double outer ring) with half that range difference. For example, with a 13-34 cassette, you'

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
great idea Bill :) On Thursday, June 2, 2016 at 12:32:01 PM UTC-5, William deRosset wrote: > > Dear Lungimsam, > > If you're staying with 7speed, and this isn't a new bike, then why not > just go to a half-step (either bigger middle or, more likely, a smaller > outer) + granny? What is driving

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread William deRosset
Dear Lungimsam, If you're staying with 7speed, and this isn't a new bike, then why not just go to a half-step (either bigger middle or, more likely, a smaller outer) + granny? What is driving you away from a triple for this machine? Seven rear cogs is the magic transition point between when hal

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
and it works just as well today as it ever did, with all the versatility of a compact double x10 On Thursday, June 2, 2016 at 8:06:34 AM UTC-5, Ron Mc wrote: > > but this becomes a question of changing a single chainring vs. a whole > drivetrain > > On Thursday, June 2, 2016 at 8:02:47 AM UTC-5,

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
but this becomes a question of changing a single chainring vs. a whole drivetrain On Thursday, June 2, 2016 at 8:02:47 AM UTC-5, Steve Palincsar wrote: > > There was a lot to like about HSG back in the day. Still, with today's > components (>7 speed cassettes) it no longer makes much sense. > >

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Steve Palincsar
There was a lot to like about HSG back in the day. Still, with today's components (>7 speed cassettes) it no longer makes much sense. On 06/02/2016 08:57 AM, Ron Mc wrote: There's also nothing complicated about shifting- it's extremely simple (and versatile). Here's how it works on a bluff cl

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
There's also nothing complicated about shifting- it's extremely simple (and versatile). Here's how it works on a bluff climb: Approach on the big ring, take the half-step down to maintain spin on the initial climb; take full steps as needed to climb the final steeper nob; go back up the half-

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
*here's the gear analysis of my cyhclotouriste triple*

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
>From my experience, rather than counting teeth, gear steps between 5 to 7 inches is what makes a drivetrain versatile and delightful. If you go to a double with granny, you'll effectively have a wide 1x7 with some cliff-steps over 10 inches. -- You received this message because you are sub

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Michael Hechmer
I agree with Steve on this. You already have a set up which works quite well for you. When setting up gears many riders focus on the high, the low, and the # of rings & cogs. The last is in many ways the least and last to choose. Much more important are the steps between gears and how easy

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
so think about just replacing your big ring with a 38T or 39T and keeping the rest - use a gear chart to decide which is most versatile. On Thursday, June 2, 2016 at 6:22:52 AM UTC-5, Ron Mc wrote: > > I marvel every time I ride my old Raleigh with the half-steps plus granny > drivetrain, also

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Ron Mc
I marvel every time I ride my old Raleigh with the half-steps plus granny drivetrain, also a friction wide-7 rear, 12-32 My chainrings are 46-42-26. I have two significantly lighter bikes that are both fun to ride, a Campy road double, and Microshift compact double that's effectively a 1x9 wi

Re: [RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-02 Thread Steve Palincsar
On 06/01/2016 11:45 PM, Lungimsam wrote: PS- Will I have to change my derailers, too? I can't see any reason why you would have to. I have a Microshift triple derailer up front and a SUNXCD in the back with a long jockey arm on it. This may get too expensive for little benefit. You r

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-01 Thread dougP
If you can find a 7 speed 11-28, you will give a similar low to what you have now with a 24 inner ring, 24/28= 0.86; 26/30= 0.87. On the high end, 38 x 11 (3.45) is not far off 46 x 13 (3.54). Most wide-low doubles utilize a cogset of at least 3:1 range (11-34; 12-36, etc) which gets into more

[RBW] Re: Triple to double crankset - how to do it gearwise?

2016-06-01 Thread Lungimsam
PS- Will I have to change my derailers, too? I have a Microshift triple derailer up front and a SUNXCD in the back with a long jockey arm on it. This may get too expensive for little benefit. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group