HOPE road BBvs Mountain BB (chainline etc)

wyadvd

I went into my LBS to replace my shimano bb with a Hope BB.

Trouble is the guy sold me the Mountain version of the BB, which I fitted as per the instructions on my 68mm bb shell tiagra triple road bike.

not quite right now.

my question is this; what is the actual difference in dimensions (precise if possible) between the road and mountain versions of Hope BBs?

mountain :

http://www.hopetech.com/webtop/modules/ ... ctions.pdf


Road;

http://www.hopetech.com/webtop/modules/ ... ctions.pdf


I think the centre tubes are of different lengths , but Ive no idea what the difference is as dimensions are not on the above diagrams

maddog 2

everything is the same except the width of the central tube, as you suggest.

and you can buy just the central tube, to convert a 'road' into a 'mtb'.

see http://www.chainreactioncycles.com/Mode ... elID=80496

and http://www.chainreactioncycles.com/Mode ... elID=36410

and you can obviously run it without the central tube

Note: the MTB fitment will also have three spacers, as per Shimano (2 driveside, 1 NDS, on a 68 shell). Road setups run no spacers.

wyadvd

LBS fixed it. they admitteed to having sold me the wrong bb and put a road one on FOC with all the corect spacers (6.5 mm on drive side and 3mm NDS). All perfect now.