There’s a lil math to be done about finding the closest spindle length since it won’t fit exactly right but other than that, it’ll work. Might just need a lil more force from your crank puller when it’s time to remove them.
3thoughts on
I wouldn’t recommend it, especially on a fixie.
It changes your chainline, and also reduces the amount of material engagement between the crank and the spindle. These cranks appear used, so work hardening of the taper from previous installations may also be a factor of unknown magnitude.
On a geared bike I wouldn’t worry, apart from damaging the resale value of the crank. Chainline is less important, loading is mainly in one direction (the drivetrain does not provide braking) and you’re less likely to eat shit in the event of a component failure.
All that said, [Sheldon says you’re fine](https://www.sheldonbrown.com/bbtaper.html); I’m sure he did it on a fixie at some point. But are you as mechanically competent as Sheldon Brown? Keep in mind many professional mechanics will not do an ISO to JIS install (with or without a liability waiver).
Does your current BB even result in a proper chainline with this crank? If not, you’ll need a new BB anyways, might as well just buy the right part for the job. They aren’t that much more expensive than JIS ones; you don’t need to go with Sugino, I think companies like Origin8 make a few different cartridge options.
2 Comments
There’s a lil math to be done about finding the closest spindle length since it won’t fit exactly right but other than that, it’ll work. Might just need a lil more force from your crank puller when it’s time to remove them.
I wouldn’t recommend it, especially on a fixie.
It changes your chainline, and also reduces the amount of material engagement between the crank and the spindle. These cranks appear used, so work hardening of the taper from previous installations may also be a factor of unknown magnitude.
On a geared bike I wouldn’t worry, apart from damaging the resale value of the crank. Chainline is less important, loading is mainly in one direction (the drivetrain does not provide braking) and you’re less likely to eat shit in the event of a component failure.
All that said, [Sheldon says you’re fine](https://www.sheldonbrown.com/bbtaper.html); I’m sure he did it on a fixie at some point. But are you as mechanically competent as Sheldon Brown? Keep in mind many professional mechanics will not do an ISO to JIS install (with or without a liability waiver).
Does your current BB even result in a proper chainline with this crank? If not, you’ll need a new BB anyways, might as well just buy the right part for the job. They aren’t that much more expensive than JIS ones; you don’t need to go with Sugino, I think companies like Origin8 make a few different cartridge options.