Originally Posted by
Bill Kapaun
If the chain wrap capacity is 38T-
An 11-34 cassette would use 23T of that, so you could have a 15T difference up front between smallest/largest and be within limits. You could even fudge a bit more if you can accept a sagging chain in small:small which shouldn't be used anyway.
Use a more "normal" road cassette such as a 12-27 and you could have 23T difference in front.
The RDER doesn't "know" if the difference in chain wrap is from the front or back!
Thank you! Group is now off the bike, picking up new frame this Thu. Wheels are ready and I got 8 speed cassette for it - 11-32,
http://www.mec.ca/product/5019-209/s...eed%2Bcassette. I will look at different cassette once this worn out or if ratios do not work for me and I am still not so sure about this whole gears thing :-)