Commencal Supreme DH 2012 and Demo 8 2012 Bottom Bracket

Author	Message

Clefrigh

Posted: Jul 13, 2012 at 20:43	Quote
Hi, I want to buy a Commencal Supreme DH 2012 Frame, but I want to know if it can fit the bb that comes into Demo 8 2012 Bike, because I have the parts of this bike. What I find is this: Commencal Supreme DH 2012 - BOTTOM BRACKET WIDTH Type Cranks 83mm Press Fit Shimano BB92 Specialized Demo 8 2012 - BOTTOM BRACKET SRAM PF30 DH, 83mm shell Can you help me guys?. Thank you in advance!

Clefrigh

Posted: Jul 14, 2012 at 22:51	Quote
Anyone?

jimferno

Posted: Jul 14, 2012 at 23:40	Quote
Totally different bb standard. No, you can't use a PF30 bb from a '12 Demo in a '12 Supreme.

Scythe888

Posted: Jul 16, 2012 at 4:31

Quote

jimferno wrote:

Totally different bb standard.

No, you can't use a PF30 bb from a '12 Demo in a '12 Supreme.

So there is two differ press fit standards? I'm wondering because I would think a press fit is a press fit, should be the same size. This would be good info to know for future reference.

Clefrigh

Posted: Jul 16, 2012 at 7:40

Quote

Scythe888 wrote:

jimferno wrote:

Totally different bb standard.

No, you can't use a PF30 bb from a '12 Demo in a '12 Supreme.

So there is two differ press fit standards? I'm wondering because I would think a press fit is a press fit, should be the same size. This would be good info to know for future reference.

That is my doubt too.

jimferno

Posted: Jul 18, 2012 at 0:42	Quote
Specialized Demo is a PF30 BB, a SRAM standard. Supreme V3 is a BB71, a shimano standard. Neither is interchangeable.

Scythe888

Posted: Jul 18, 2012 at 2:06

Quote

jimferno wrote:

Specialized Demo is a PF30 BB, a SRAM standard. Supreme V3 is a BB71, a shimano standard. Neither is interchangeable.

What's the difference? Just curious.

jimferno

Posted: Jul 18, 2012 at 2:17	Quote
Axle size on the cranks and BB size. Nothing is interchangeable between the two. I'd look it up and give you a more in depth answer but I'm on my phone.

Scythe888

Posted: Jul 18, 2012 at 4:29

Quote

jimferno wrote:

Axle size on the cranks and BB size. Nothing is interchangeable between the two. I'd look it up and give you a more in depth answer but I'm on my phone.

I think I get the jest of it. Just got to look into it more myself. I'm not really looking at a press fit BB frame right now anyways, just looking for a quick and easy answer.

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