water bottle Posted March 29, 2012 Share I had a 30 40 52 FSA 170 10 sp crankset on my tandem. I started running out gears, so had a modification done. I put a 55 big blade on with a 42, but the chain kept dropping between big and middle blades.Must say I did get my speeds up on flats and downhill. The LBs's tried narrowing it with washers but in the Argus I dropped the chain twice - very frustrating the first time as we were comforable in a group, did 3.16. Second time it got back on after much fiddling by changing back and front gears. The one LBS says they can get a FSA 44t, to replace the Shimano 42t they put on. Must say, they have been very helpfull. My question is: Do you get a standard combonation for above ratio, or is it you have to build up a crankset. Have googled, but my knowledge is limited as to what will do and what not. What did other Tandem riders do. Started in RT in Argus, and everybody basically had bigger blades on. So it can be done. Can somebody give some advice pls? Link to comment Share on other sites More sharing options...
Big H* Posted March 29, 2012 Share I had a 30 40 52 FSA 170 10 sp crankset on my tandem. I started running out gears, so had a modification done. I put a 55 big blade on with a 42, but the chain kept dropping between big and middle blades.Must say I did get my speeds up on flats and downhill. The LBs's tried narrowing it with washers but in the Argus I dropped the chain twice - very frustrating the first time as we were comforable in a group, did 3.16. Second time it got back on after much fiddling by changing back and front gears. The one LBS says they can get a FSA 44t, to replace the Shimano 42t they put on. Must say, they have been very helpfull. My question is: Do you get a standard combonation for above ratio, or is it you have to build up a crankset. Have googled, but my knowledge is limited as to what will do and what not. What did other Tandem riders do. Started in RT in Argus, and everybody basically had bigger blades on. So it can be done. Can somebody give some advice pls? Larger blades and successful shifting is a function of the throw your front derraileur has. Shimano gives that in their spec sheet. It is expressed as the difference in gear teeth between blades. Link to comment Share on other sites More sharing options...
agentorenge Posted April 9, 2012 Share what help is that? Link to comment Share on other sites More sharing options...
Neg Posted September 6, 2013 Share WB you are probably sorted by now but i have a 32-44-55 FSA combo on my one tandem on on the other a 48-58 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now