I installed FSA compact cranks this weekend. I have no chain rub problem to speak of, but did have problems shifting.
When shifting from the 50 to the 34 in certain gear combos (12-26 cassette) with Ultegra derailleur, the chain would jump off the 34 way too often. No amount of fiddling with limit and tension would fix it, at least with my modest wrenching skills. So I replaced the 34 with a 36, which eliminated the chain suck - the chain doesn't drop down so forcefully with the smaller gap.
Now I have smooth shifting but not the super low gearing I was hoping for. Will continue to experiment. Any suggestions? --dt
I ended up getting the FSA Carbon Compact 34/50 and it works fine. Every so often the chain will come off the 34 but no more than with the old Shimano 39/53. I also put on Campy Ergo shifters a few weeks after getting the crank, along with a device called the Shiftmate that allows me to use my Shimano gears. The Ergo front shifting is MUCH better than Shimano and I only had the chain come off once but that was because the front derailleur needed some more tweaking. I may investigate Campagnolo's compact front derailleur in 2005 to see if that makes things even better.
Also, does anyone using the FSA models have any chain rub issues. I read some review where the user had a lot of rub using the 34 tooth ring, but he may have been technically challenged. Thanks to all who offer useful information.
I installed FSA compact cranks this weekend. I have no chain rub problem to speak of, but did have problems shifting.
When shifting from the 50 to the 34 in certain gear combos (12-26 cassette) with Ultegra derailleur, the chain would jump off the 34 way too often. No amount of fiddling with limit and tension would fix it, at least with my modest wrenching skills. So I replaced the 34 with a 36, which eliminated the chain suck - the chain doesn't drop down so forcefully with the smaller gap.
Now I have smooth shifting but not the super low gearing I was hoping for. Will continue to experiment. Any suggestions? --dt
Hi, how about a N-Gear Jump Stop, that would probably do it. i have one on both my bikes, a triple and a double. Here, take a look - http://www.gvtc.com/~ngear/
I installed FSA compact cranks this weekend. I have no chain rub problem to speak of, but did have problems shifting.
When shifting from the 50 to the 34 in certain gear combos (12-26 cassette) with Ultegra derailleur, the chain would jump off the 34 way too often. No amount of fiddling with limit and tension would fix it, at least with my modest wrenching skills. So I replaced the 34 with a 36, which eliminated the chain suck - the chain doesn't drop down so forcefully with the smaller gap.
Now I have smooth shifting but not the super low gearing I was hoping for. Will continue to experiment. Any suggestions?
Do you have a standard short cage rear deraileur? If so, going to a long cage rear deraileur might help. It will maintain chain tension better when you're on the 34.
You can also get one of those "chain watcher" devices that attaches to the seat tube below the front deraileur and keeps the chain from coming off the inner ring. A few different companies make them. I've never used one. I've been tempted but I always eventually seem to find the right deraileur adjustment so that it doesn't come off accidently but still actually shifts onto the inner ring.
Doug-<< When shifting from the 50 to the 34 in certain gear combos (12-26 cassette) with Ultegra derailleur, the chain would jump off the 34 way too often. >><BR><BR> << Any suggestions? --dt >><BR><BR>
3rd eye chain watcher.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302 (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
On 12 Aug 2004 12:54:49 GMT, [email hidden] (Qui si parla
Campagnolo ) said:
3rd eye chain watcher.
Chain watcher did the trick, but after a little searching, I got a Deda Elementi Dog Fang instead of the other brands suggested. This one is similarly priced, but is a little simpler and more elegant to my eye.
It looks like the 3rd Eye, but comes in different sizes according to tube diameter like the N Gear.
