FSA cranks: ISO or JIS taper?

[Anthony DeLorenzo]

I grabbed a set of no-longer-made FSA square taper cranks from my LBS
for a new build. FSA doesn't make them anymore, of course, and don't
provide any tech info on their website for them.

I'm having a chainline problem, with these cranks on a (quite narrow)
110mm bottom bracket they are still too far outside. I just suddenly
realized that the problem could be that I'm using a Shimano (JIS)
square taper BB with cranks that could be ISO/campy tapers. This would
mean that they aren't going far enough onto the spindle.

Anyone know what taper FSA used, or how I would measure to find out? If
they are, in fact, ISO taper how many mm will the cranks move in if I
change to an ISO bottom bracket?

Thanks,
Anthony

 

[[email protected]]

Anthony DeLorenzo wrote:
> I grabbed a set of no-longer-made FSA square taper cranks from my LBS
> for a new build. FSA doesn't make them anymore, of course, and don't
> provide any tech info on their website for them.
>
> I'm having a chainline problem, with these cranks on a (quite narrow)
> 110mm bottom bracket they are still too far outside. I just suddenly
> realized that the problem could be that I'm using a Shimano (JIS)
> square taper BB with cranks that could be ISO/campy tapers. This would
> mean that they aren't going far enough onto the spindle.
>
> Anyone know what taper FSA used, or how I would measure to find out? If
> they are, in fact, ISO taper how many mm will the cranks move in if I
> change to an ISO bottom bracket?
>
> Thanks,
> Anthony

did you try emailing them for answers ?

 

[Qui si parla Campagnolo]

Anthony DeLorenzo wrote:
> I grabbed a set of no-longer-made FSA square taper cranks from my LBS
> for a new build. FSA doesn't make them anymore, of course, and don't
> provide any tech info on their website for them.
>
> I'm having a chainline problem, with these cranks on a (quite narrow)
> 110mm bottom bracket they are still too far outside. I just suddenly
> realized that the problem could be that I'm using a Shimano (JIS)
> square taper BB with cranks that could be ISO/campy tapers. This would
> mean that they aren't going far enough onto the spindle.
>
> Anyone know what taper FSA used, or how I would measure to find out? If
> they are, in fact, ISO taper how many mm will the cranks move in if I
> change to an ISO bottom bracket?
>
> Thanks,
> Anthony

JIS and use a shorter BB..like a 107 or 103mm..shimano or TA. BUT
ensure the cranks are torques on and then measure chainline, center of
BB shell to middle of the rings...about 45-47mm.

 

[Paul Kopit]

On 16 Oct 2006 05:43:13 -0700, "Qui si parla Campagnolo"
<[email protected]> wrote:

>JIS and use a shorter BB..like a 107 or 103mm..shimano or TA. BUT
>ensure the cranks are torques on and then measure chainline, center of
>BB shell to middle of the rings...about 45-47mm.

They did have some ISO x 102 mm. I had a set. The crank had "iso"
somewhere on it but I've forgotten the exact location.