I am building an early 90's colnago master and have a C-record crank clearance issue with the right chain stay. I have a newer model sealed italian threaded bottom bracket installed, and when I attach my crank the smaller chain ring, is hitting the chain stay.

Has anybody ran into this? What would a good remedy be? BB spacers to move my crank out more? Would this mess my chain line up? A longer BB? What would be the correct length be?

I do have a mid 90's record crank that works fine with the frame but the c record is the correct vinate.

It appers that the two cranks have different depths on the center arm.

Any ideas would be great! Thanks.
Jason

C-Record bottom brackets had a spindle length of 110 or 111mm, IIRC. Campy uses the ISO standard for their square tapers as opposed to the JIS standard used by companies like Shimano.

To add to the above post, new Record BBs are 102 mm for doubles. I believe a triple BB is something like 111 mm - that should help with your C-Record. New Record and Chorus have same axle lengths for the square taper BBs.

cdr