Originally Posted by
maddog34
your only hope may be contacting the OEM for a new one.
i've never seen a fat bike with a 73mm BB shell..
the shells begin at 100mm width, and 120mm is also common.
i did see a 68 x 142, on ebay.... it might be made to kinda fit.... ?
ebay search: Bike Bicycle Bottom Bracket 68 x 142mm Square Taper
and there is an Origin8 that's not too spendy... it might work with spacers and a lock ring... ? you'd lose a half inch of shell contact, per side...
ebay search: ORIGIN8 XLT Square Taper BB 100mm x 164mm English JIS Steel Bottom Bracket
or go to a box store that stocks several fat tire bikes, measure a few BBs, and contact THAT MFG for a spare part....
A 142mm square taper is too short for the cranks to clear the frame, it is a monster wide frame. To clear both chain stays we would need 6.5 to 6.625 clearance of the cranks.
I looked the ORIGIN8 XLT Square Taper BB 100mm x 164mm English JIS Steel Bottom Bracket and fear that there may not be enough thread left on the cups after stalling all the lockring spacers needed. Buying a $30+ part on a whim is tough for us because it it didn't work we most like would hold on to it forever. We did find this one
https://www.thebikesmiths.com/produc...31284726923328 and for $18.25 with shipping I just might try that one.