Running Large Cassette on Road Bike ?
05-21-08, 06:07 PM
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Running Large Cassette on Road Bike ?
Has anyone tried this 9 speed setup for climbing? Standard 53-39 up front, 11-30 cassette, Dura ace 7700 GS mechanical with the 13 tooth jockey wheels? I do not want to convert to a compact. Thanks!
05-21-08, 06:38 PM
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You may need to scrounge around a hardware store to find a slightly longer B-screw, but it can work. I've seen it done, just not done it myself.
05-21-08, 07:30 PM
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Another trick is to completely remove the B-screw and reinstall it backwards. The head will give you a few additional millimeters effective length.
05-21-08, 09:55 PM
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I made a 13-28 to use when I climb in the Blue Ridge. No problems on a couple of different frames. Chain length won't be an issue because you most likely won't be in the big/big combo. So long as you can keep the RD off the larger cog, you're groovy
05-22-08, 05:45 AM
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D/A GS vs. Ultegra GS ?
Yes, i also run a 28 and short cage but that seems to be the very absolute limit with this setup. The D/A 7700 GS has the large 13 tooth pulleys to take up extra chain. My concern is that those same large pulleys will be in conflict with a larger 30 tooth cog. Would an Ultegra GS be a better solution with it's 11 tooth pulleys? This is probably one of those things i will just have to set up & try.
