Advice and opinions welcome ...Just treated myself to my dream $2500 frame with a custom paint job from a well known London based Shop and Bike brand , now the frame is BB30 at the time of ordering i advised them that i would be running an almost new 2012 Campag Carbon Power Torque Red n Black groupset and they even confirmed what BB30 cup size i would need .
My LBS fitted the cups to the frame and they dont sit flush against the BB shell even though they are against the lip of the BB Sleeve / collar appears there an 2 mm gap between the BB cups and the BB shell , now upon seeking advice from the frame maker they advised to " grind or file " down the cups a couple of mm`s so they would sit flush , my LBS mechanic / Owner was agasht at this suggestion and sought advice from VeloTech who are the official UK Campag service center his answer was unprintable
on these pages , now i always thought that BB30 relied on a decent contact surface for the cups to sit against and grinding cups down defeats the objective of BB30 .
The frame maker has now come back to me admitted that the way there BB shell is made ( machined from a solid billet ) means Power Torque cups are not compatabile and is offering a Threaded insert so i can run standard BSA cups but that kinda defeats the object of having BB30 which was a selling point of the frame..... or at cost price the new Over Torque chainsets which are 11 speed / Ultra Torque chainsets which i belive only come in 11 speed Chorus or Record guises these days which is still another $400 to spend .
Am i being picky by rejecting the above solutions or any advice or feedback that i have not thought about .
The Campagnolo 42mm cups for BB30 frames require that the C-clips or E-clips used as the bearing seat with a BB30 crankset be removed. Felt Bicycles has a custom carbon BB shell in our premium frames that does not use C-clips or grooves in the shell, there is a bonded in sleeve for the bearings to rest against that cannot be removed. To use Campagnolo cranks the Campy cups need to be ground down just to the edge of the o-ring seat. I've done this on a couple dozen bikes without any creaking or loss of performance whatsoever. I suspect this would likely void the warranty of the BB and crankset from Campag however.
Just an anecdote FWIW.