Re: [RBW] Re: Riv 12-40 cassette
Dear Joe, I've read that racing cyclists would use their gears that way back when chains were stiffer and chainline an obsession--big ring with the small tooth-count half, and small ring with the large cogs. But they'd be working with 4 or 5 cogs, and relatively small gaps between chainrings--like five teeth. However, those days were long gone with 6-speed gear. Pretty much all of the older riders when I got going used "standard" racing gears, so 42-52 (or 53--ooh a sprinter!) up front and a 13-XX cluster in back. In Louisiana, XX = 18 or 19; in Colorado, XX = 24 or 28. A few had the drilled Campy triple setups, but they weren't racers. I started on the same stuff (though with junior gears) and switched to HS+G once I got over my racing bug. It remains an elegant and efficient system, at the expense of a triple chainring setup. I mostly use a wide-range crossover in these days of many-cog cassettes--basically the Half-Step is replaced by a close-ratio 1X10, and the Granny remains as bailout. Best Regards, Will William M. deRosset Fort Collins, CO On Monday, December 7, 2015 at 10:45:20 PM UTC-7, Joe Bernard wrote: > > Weird, it looks like they split the gearing into two stages. Like you'll > use the smaller jumps on the small cogs for flats, then leap to the other > set of small-jumps for climbing. Assuming that convoluted description makes > sense to anybody, I wonder if it makes any sense on the road. -- 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 [email protected]. To post to this group, send email to [email protected]. 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: Riv 12-40 cassette
Weird, it looks like they split the gearing into two stages. Like you'll use the smaller jumps on the small cogs for flats, then leap to the other set of small-jumps for climbing. Assuming that convoluted description makes sense to anybody, I wonder if it makes any sense on the road. -- 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 [email protected]. To post to this group, send email to [email protected]. 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: Riv 12-40 cassette
"What's strange are jumps that get larger, then get smaller, and then get larger again. I don't think I've ever come across that. " I agree that it's strange, but I have come across it. I just obtained a totally stock 1985 Schwinn. The 1985 Catalog says it comes stock with a 6-speed Shimano freewheel with the following cogs: 14-15-17-21-24-26 That's right, jumps as-you-go of : 1 - 2 - 4 - 3 - 2 I think that qualifies as bizarre, by my contemporary standards. The bike arrived Friday, and is in fact bone-stock (including tires). I counted the freewheel cogs and they are exactly as specified in the catalog. No, I'm not going to use it. I replaced it with a period 6-speed Shimano 600 freewheel that I built with cogs: 13-15-17-19-22-25 Bill Lindsay El Cerrito, CA -- 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 [email protected]. To post to this group, send email to [email protected]. 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: Riv 12-40 cassette
On 12/07/2015 05:16 PM, Garth wrote: This is an IRD cassette, nothing to do with Riv other than they are a retailer. The odd cog choices apears to be an IRD chacterstic in both cassettes and FW's. They seem to be in love with 17-21-24 jumps when 17-20-24 is to me at least, perfect. Also 15-18-21-24 on 6 sp. FW when 15-17-20-24 is perfect. Those progressions at least are "normal" in that the farther you go towards the largest sprocket the bigger the jumps get.What's strange are jumps that get larger, then get smaller, and then get larger again. I don't think I've ever come across that. -- 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 [email protected]. To post to this group, send email to [email protected]. 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: Riv 12-40 cassette
I dunno about that. Maybe it's not possible to overthink gearing, but it's possible to spend too much time thinking about the gearing on your bike when one should be thinking about more pressing things, like work, family member's cancer treatment, pregnant wife, house maintenance, volunteer obligations, etc, etc... It's a guilty pleasure to obsess over your bicycle configuration, one that I partake of quite frequently... Oh well :) Jim On Dec 6, 2015 6:07 PM, "Steve Palincsar" wrote: > > > On 12/06/2015 06:49 PM, dougP wrote: > >> Interesting. I thought maybe it was a mis-print. Grant has mentioned >> that we tend to over-think gearing but it seems this cassette could be >> improved with a more thoughtful cog selection. A 4 tooth jump, another 4 >> tooth jump, then a 3 tooth jump, followed by 6? Hmmaybe I'm >> missing something? >> > > I agree, normally the gaps continue to get larger the farther down the > cassette you go, and this doesn't seem to make any kind of sense other than > possibly simple expediency due to availability. And IMHO it is virtually > impossible to over-think gearing. > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > 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 [email protected]. To post to this group, send email to [email protected]. 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: Riv 12-40 cassette
On 12/06/2015 06:49 PM, dougP wrote: Interesting. I thought maybe it was a mis-print. Grant has mentioned that we tend to over-think gearing but it seems this cassette could be improved with a more thoughtful cog selection. A 4 tooth jump, another 4 tooth jump, then a 3 tooth jump, followed by 6? Hmmaybe I'm missing something? I agree, normally the gaps continue to get larger the farther down the cassette you go, and this doesn't seem to make any kind of sense other than possibly simple expediency due to availability. And IMHO it is virtually impossible to over-think gearing. -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
