i have a rival setup on my hampsten with a 50/34 crankset. i tried my friend's ird 12/30 cassette and it did not work very well. the sram road groups are not designed for low gears.don c.
--- On Sat, 11/14/09, cyclotourist <[email protected]> wrote: From: cyclotourist <[email protected]> Subject: [RBW] Re: Drivetrain question... AHH with 9 vs 10 speeds... To: [email protected] Date: Saturday, November 14, 2009, 7:53 PM Is there enough chain wrap with the Rival rear derailer to run the XX 36T cassette? There's also an 11-32T XX cassette out there that you could try. Presuming you don't cross-chain that could work??? You could also go down one size to a 33T small ring, which isn't a lot of change (3%), but might be just the difference you need??? http://sheldonbrown.com/harris/chainrings/110.html On Sat, Nov 14, 2009 at 7:32 PM, Jim Thill - Hiawatha Cyclery <[email protected]> wrote: Yep, ditch the Rival shifters, cassette, rear derailleur, 10s chain. Sounds like you have an adequate 9s cassette already. With a Deore-ish rear derailleur, Shimano 9s bar-ends, and a 9s chain, you may keep the double crank and be satisfied with a 34/34 low gear and spend only $150 or so to get there (assuming you do your own wrenching). If you still want to go lower, then you can spring for the Sugino XD or whatever triple, appropriate bb, (and MAYBE a triple fder), but you will already be prepared with your shifters, etc. The 10s chain will work on a 9s cassette in friction, but I've never been satisfied with friction shifting and 9s because the shifter ratchets start to act like faux-indexing, which is bad. On Nov 14, 8:37 pm, Rene Sterental <[email protected]> wrote: > Thank you all for the great responses and ideas. Here are some more > questions based on those... > - I had not considered the alternative of going to a triple crankset; > initially Mark suggested to keep the double for the lower Q factor, but I > don't know how much of an issue that would really be for me. I never have > any trouble with my triple crankset on my mountain bike. However, this > option brings up the following issues: > * Need to change the bar-end shifters, the Sram won't be compatible with the > triple crankset - not a big deal... > * Will the 10 speed chain work smoothly with the triple crankset that is > designed for 9 speed or fewer chains? 10 speed chains are narrower - > conversely, will a 9 speed chain work on the 10 speed cogset? I don't think > so, it might get stuck as the space between the cogs is narrower as well... > > That would mean, if I got it all straight, that probably the best solution > would be to go with a triple crankset and a regular Shimano 9 speed cassette > and other standard parts. Sell the Shimano Rival drivetrain to a roadie > looking to upgrade to 10 speeds (I have the integrated brake/shifter levers > as well) and gain the flexibility of easily customizing a Shimano 9 speed > drivetrain. > > Did I get that right? The kind of hills I want to climb are in the San > Francisco Bay area... Highway 84 to Skyline, Old La Honda, Mount Diablo, > etc. Some of them I could climb now, but on the brink of blowing out and > that is no fun at all... :-) > > I'm going back to the calculator and craig's list... :-) > > René > > On Sat, Nov 14, 2009 at 6:17 PM, Richard <[email protected]> wrote: > > > Sorry about thinking you can get a Shimano 10-speed cassette in the > > range you want. However, Interloc Racing Design (IRD) does make a 10- > > speed Shimano compatible cassette, although shifting might not be as > > precise as with a Shimano cassette. > > > On Nov 14, 8:06 pm, Richard <[email protected]> wrote: > > > I'm using a Shimano 13/25 10-speed cassette with my Rival shifters, > > > front and rear derailleurs, compact crank and chain. From what I've > > > read about the SRAM XX rear derailleur, it appears to be compatible > > > with other 10-speed SRAM road groups and should also work fine with > > > any Shimano 10-speed cassette. If such is the case, you should be > > > able to get a new SRAM XX rear derailleur and a new Shimano 10-speed > > > cassette at a cost that also should come in at less than $500.00. > > > > I apologize if I'm not correctly understanding your objective. > > > > Good luck. > > > > Richard > > > > On Nov 14, 6:51 pm, Rene Sterental <[email protected]> wrote: > > > > > Even though this may be a polarizing subject, I'd like to get solid > > > > arguments to answer this question and support a decision: > > > > > When I bought my AHH frame, I built it up with the Sram Rival 10 speed > > > > drivetrain I had on my Gunnar. I just bought the Sram aluminum bar-end > > > > shifters and used the other parts: > > > > - Compact crankset 34/50 > > > > - 11/28 10 speed cassette > > > > - Sram Rival front & rear derailers. > > > > > At the time, I was told that to make climbs easier, I could go with the > > > > newer 11-36 Sram XX rear cassette (I'm 264 lbs now). Researching > > prices, > > > > however, shows that I'd also need to replace the rear derailer and the > > total > > > > sum of the upgrade would be $593.00, which seems pretty steep. I then > > > > proceeded to research the alternatives, and came out with a very nice > > change > > > > to a Sugino/Shimano 9 speed drivetrain change that includes the new > > Shimano > > > > 12-36 9 speed cassette and comes up to $625. If instead I use an spare > > 11-34 > > > > rear cassette I have, the total comes to around $575.00. > > > > > Factor in the following elements: > > > > - Cost of replacing the rear cassette, Sram XX @ $328 vs. Shimano @ $60 > > or > > > > so... > > > > - Durability of the rear cassette, Sram XX - unknown and developed for > > > > racing vs. Shimano - well known and multiple options available. > > > > - I'm not worrying about weight, since I'm the one who has to lose > > it... > > > > > Does it make sense to switch to a complete 9 speed drivetrain and sell > > the > > > > Sram Rival drivetrain, which would help lower the cost of the switch? I > > seem > > > > to think so, but wanted to get your opinions and feedback. > > > > > Thank you all! > > > > > René > > > > [email protected] Hide quoted text - > > > > - Show quoted text - -- Cheers, David Redlands, CA "Bicycling is a big part of the future. It has to be. There is something wrong with a society that drives a car to workout in a gym." ~Bill Nye, scientist guy --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
