Originally Posted by
cny-bikeman
As the supplier specified a 115 mm BB and you have the standard 68mm BB shell (correct?) you should receive a refund if that has not been offered. You do have a problem now, as it's difficult to match a crankset to an already existing cartridge BB. It's always best to order crankset and BB as a unit, or at least from the same supplier who has guaranteed compatibility.
Hey yes its a 68mm bb shell , and the supplier did specify a 115mm bb and I went and ordered it on that ground s so i guess I have a case for a full refund . Not so bothered about ordering the 115mm BB as I can use it on another bike that needs a BB so not such a loss .
Im in two minds now about sending back the new crank . I have measured the distance between the inner chainring and the frame with the crank fitted on and its a whopping 11 mill , Ive worked out that if I order a 102 mill BB that I can cut that down by 6.5 mill (115milBB - 103mill BB = 13mill/2 = 6.5 mill) so that I can reduce that distance to 4.5 mill . Would 4.5 mil be an acceptable chainring to frame clearance ? Im not looking for tour de france perfection here but Id like it to be someway correct .