Join Date: Oct 2005
Bikes: Rivendell Quickbeam, Rivendell Rambouillet, Rivendell Atlantis, Circle A town bike, De Rosa Neo Primato, Cervelo RS
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Originally Posted by Collie
so according to sheldon brown:
the sugino xd600 crankset needs a square bb 113-118mm
i have a 110mm bb on the thorn sherpa so i get a little rubbing when in the lowest gear combo. i'm not sure if this is simply an annoyance or if it can cause significant damage to other components??? (please comment!)
so looking at sjscycles.co.uk there are a selection of 68mm bb's that seems to be suitable, but what is the difference between them: un51/52/53; un72/3; un54?????
also what length is advisable? the shortest possible? i.e. 113mm. or is there any benefit to a longer spindle? 115-118mm??
Get a BB you can easily adjust left to right, the Phil Wood's are expensive, but give you a couple of mm of easy
adjustment to get your chain line right. The BB length required will be dertemined by the crank, the spacing of the
chainstays and the size of your smallest ring. I have a bike with 135 mm rear separation and I find that a 111mm BB works
well with the Sugino XD.I run it as a double with a 26t small ring and have to offset the BB 2mm to the right to get chainstay/ring
clearance and chainline right.
Why not call Thorn and ask them
Last edited by nun; 05-17-07 at 07:48 AM.