M
monkeyboy
Guest
Hello,
I recently purchased a bianchi axis for a commuter bike. It came with a
175mm-triple. I would like to swap it with a shimano 600 or 105,
172.5mm-double I currently have. When I try to mount the crank, the
large chain ring rubs on the chain stay.
I'm not sure what the best fix is. It looks like you can't find a
172.5mm-triple unless your at the high end of the component range, and
they are expensive. Could a new bottom bracket fix the problem? Are
there different tapers on the bottom brackets that determine where the
crank mounts?
Thanks,
Frank
PS
I want to make the change for a couple of reasons. I have two other
bikes each with 172.5mm cranks, I'd like to keep things the same for
all. Also, I have some road sized, 130 bcd, chain rings to use as
spares. The triple came with a 48 as the largest and has a 110 bcd.
I recently purchased a bianchi axis for a commuter bike. It came with a
175mm-triple. I would like to swap it with a shimano 600 or 105,
172.5mm-double I currently have. When I try to mount the crank, the
large chain ring rubs on the chain stay.
I'm not sure what the best fix is. It looks like you can't find a
172.5mm-triple unless your at the high end of the component range, and
they are expensive. Could a new bottom bracket fix the problem? Are
there different tapers on the bottom brackets that determine where the
crank mounts?
Thanks,
Frank
PS
I want to make the change for a couple of reasons. I have two other
bikes each with 172.5mm cranks, I'd like to keep things the same for
all. Also, I have some road sized, 130 bcd, chain rings to use as
spares. The triple came with a 48 as the largest and has a 110 bcd.