BBright drive side with GXP non-drive?

[docmaduff]

Can anyone help me figure this out? Bike shops seem to be as clueless as I am about BB Standards and compatibilty.

I'm looking at buying a SRAM S900 BBright Crankset for my R3.
I currently run a SRAM Rival GXP crankset using a step down adapter inside my 2012 Cervelo R3 with BBright shell. The left crank-arm is a Stages Power meter than I need to keep. Does anone know if I can the S900 BB30/BBwrong..err BBright and can still use the Stages non-drive side crank-arm with this spindle or is that interface NOT compatible?

[primov8]

Ain't going to happen. The Rival GXP has a 24mm-22mm spindle and the S900 is 30mm.
They also bolt on differently. The spindle on the Rival GXP is fixed on the DS; the S900 30mm spindle is fixed on the NDS.

[thunderworks]

For detailed info on Cervelo, this forum can be quite helpful:

http://forums.cervelo.com/forums/5.aspx