using 140mm rotors

rowdyflat

chez le médecin
My new e bike conversion has to use a 140mm rear disc due to the wide hub motor to not rub in the frame .
Can I just use any old hydro rear brake with the appropriate adapter , I have a spare Shimano XT ?
 

Mattyp

Cows go boing
alot of frames are made for a minimum 160mm rotor with the brake calliper being mounted direct to the chain stay. it really depends on the frame, and ofcourse post mount or IS mount
 

SummitFever

Eats Squid
Shouldn't be a problem. I used a 140mm rear rotor on my 26" bike (still do) for years with an XTR caliper and the appropriate 160F/140R ISO to PM adapter. However, if it's a PM frame then typically the minimum rotor size is 160mm.
 

rowdyflat

chez le médecin
Discovered the problem was that the ehub body is too wide and hits the brake caliper without extra spacers
 
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