Originally Posted by
tigerdog
I've acquired an old bike equipped with what I believe is 1994-vintage Veloce crank. I've sourced a TA 135 bcd 39T chainring and want to replace the existing 42T inner ring.
Can this be done without removing the crank?
- If yes, do I remove the chain ring bolts, jockey around and remove the outer ring off first, then the inner, with refitting the reverse? (see signature, below)
- If no, what's the process for pulling the crank? Tools to use, etc?
And of course all the attendant things regarding chain length, FD height, etc. need to be taken into account.
Apologies if this is covered elsewhere - I've only worked on Shimano, Sugino and FSA cranks up until now.
yes you can remove the inner ring without pulling the crank. You will have to remove the outer ring. If you’re not changing the outer ring, FD height will remain the same and switching from a 42t inner to a 39t (the smallest you can fit with a 135mm BCD) will likely not require a change in chain length.
consider learning how to remove the crank though - the required
tool isn’t expensive (recent
thread in the topic) and accessing the BB is a part of bike maintenance.