....looking at the condition of the chain ring it also appears to have been used as an inner ring sometime previously judging by the dirt marks around the bolts, is it 3/32" or an 1/8". Back in the 1970's it was a regular request in bike shops to file down the inner ring shoulder on the crank when building up a Time Trial bike
....looking at the condition of the chain ring it also appears to have been used as an inner ring sometime previously judging by the dirt marks around the bolts, is it 3/32" or an 1/8". Back in the 1970's it was a regular request in bike shops to file down the inner ring shoulder on the crank when building up a Time Trial bike