 You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
Just bought some Shimano BB's off a guy on here and they are all ROAD.
They fit OK, but what is the difference between these and the mountain ones that i have as std.
Ta
Dave
The road cups are a bit wider.
Bugger!!!
cheers Simon
If you have a 68mm BB shell it doesn't matter, just use 1 less spacer (each cup is 1mm bigger).
If you have a 73mm one you're a bit stuck.
just what I have found out
OK for my Cotic but not for my Alpine or Ventana
would a road one be better than an mtb one assuning you have 68mm shells?
I am assuming the road ones are wider because they deal with far more pedal torque?
just a thought
How about no spacers on the 73mm?
IME, it's more the fact that the threaded part of the BB is narrower on the road BB than the MTB one. As a result, I use a Dura Ace BB on my steel hardtail and it's been in there for two years with no issue, but I wouldn't use one on an Alu frame, where this issue is more likely to **** up the alu BB shell threads.
threads look the same length, the cups are 1mm wider each.
Smee, that would work for the drive side only but not the non drive side, plus but i am using a BB mounted DRS chain device so I can't remove a spacer