Measure 1-piece crank for bb adapter
11-29-22, 12:18 PM
#26
post cholecystectomy
Join Date: Jul 2017
Location: Mississippi
Posts: 12,877
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 5263 Post(s)
Liked 3,784 Times
in
2,628 Posts
Again the chain line is going to be your biggest issue. You have to find out what spindle length will give you the correct chain line. That's not easy to do since sometimes mfr's don't even list what the chain line is.
And for square tapers, two different models and mfr of crank might give different chain lines on the same length of spindle. So for new franken bike designs as yours will soon be, you just have to trial and error it or do some tedious calculations with data you'll have to glean from every possible source.
There are other things you'll have to consider too. If you change the rings to a larger tooth count, then will it be rubbing the chain stay? And other that you won't know till they happen.
You did check the BB shell of those bikes to make certain that adapter will even fit them didn't you?
And for square tapers, two different models and mfr of crank might give different chain lines on the same length of spindle. So for new franken bike designs as yours will soon be, you just have to trial and error it or do some tedious calculations with data you'll have to glean from every possible source.
There are other things you'll have to consider too. If you change the rings to a larger tooth count, then will it be rubbing the chain stay? And other that you won't know till they happen.
You did check the BB shell of those bikes to make certain that adapter will even fit them didn't you?
Last edited by Iride01; 11-29-22 at 12:22 PM.
