I have a 2013 Cervelo R3 with BBright bottom bracket standard. I currently have a 172.5mm Rotor 3DF and want to swap with a 165mm FSA Gossamer. The crank says BBright on the spider face (facing out) and has BB386EVO written on the backside of the crank arm. I know going from the Rotor to Gossamer is a downgrade but it’s temporary until I drop coin on a 165mm PM. Plus, I don’t race or anything so a lb won’t bug me. I can lose that from my midsection.
When I went to install the Gossamer, there was a ton of room after snugging up the non drive side crank arm. This lets me know I need spacers. However, how many, what size, and what side do they go? I know the BBright bikes come with the FSA Gossamer so was wondering if anyone out there can definitively tell me what size spacers I need?
Thanks in advance.