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 Post subject: bc1.37 bb question
PostPosted: Thu May 25, 2017 7:13 pm 
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Joined: Thu May 25, 2017 7:05 pm
Posts: 13
Hi there. I have a Cervelo P2 with a “bc1.37 x 24” bottom bracket.

Is there any way to get a 30mm crankset through it?

Thanks in advance :)


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 Post subject: Re: bc1.37 bb question
PostPosted: Thu May 25, 2017 9:01 pm 
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Joined: Thu Mar 31, 2016 10:32 am
Posts: 296
You mean BSA?

If you get a BSA30 crank and BB, or a BSA 368 crank and BB it should fit. Forget trying to fit a normal BB30 crank in though.

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 Post subject: Re: bc1.37 bb question
Posted: Thu May 25, 2017 9:01 pm 


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 Post subject: Re: bc1.37 bb question
PostPosted: Thu May 25, 2017 9:22 pm 
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Joined: Fri Dec 11, 2009 10:38 pm
Posts: 1895
Location: Welland, Ontario
To expand.

Your BB now is a English threaded one, also called BSA.

A "long" spindle BB30 crank will work with the correct threaded cups. You will then have a setup also known as BB386evo.

FSA, Rotor and others make these cranks but as the poster says a conventional BB30 crank will not fit.

Here is such a setup Image

The difference Image

FSA and others make cups Image

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 Post subject: Re: bc1.37 bb question
PostPosted: Thu May 25, 2017 11:28 pm 
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Joined: Sun Aug 14, 2016 10:24 am
Posts: 78
you are better of just using a 24mm or 22mm


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 Post subject: Re: bc1.37 bb question
PostPosted: Fri May 26, 2017 12:37 am 
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Joined: Wed Sep 12, 2012 9:00 pm
Posts: 583
Location: Az USA
I have a 2011 Cervelo S3, which is also has a BSA threaded bottom bracket, and I've been using a wheels mfg BSA30 bottom bracket and a Rotor 3D+ crank. I have over 10k miles on this setup and it's been solid, no reason to not use a 30mm spindle crank.


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 Post subject: Re: bc1.37 bb question
PostPosted: Fri May 26, 2017 12:42 am 
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Joined: Wed Jan 19, 2011 11:14 am
Posts: 1772
Location: SYD
jobvisser wrote:
you are better of just using a 24mm or 22mm



And why is that?


I have 2 bikes with bsa bottom bracket and 30mm quarqs both have the bsa30 bottoms brackets from Kogel

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 Post subject: Re: bc1.37 bb question
PostPosted: Fri May 26, 2017 6:00 am 
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Joined: Tue Jan 09, 2007 5:04 pm
Posts: 340
It's never going to be very durable because the bearings are quite small.

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 Post subject: Re: bc1.37 bb question
PostPosted: Fri May 26, 2017 6:08 am 
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Joined: Sun Jan 05, 2014 11:04 pm
Posts: 186
Location: Denmark
havana wrote:
It's never going to be very durable because the bearings are quite small.


They sit outside the frame, so why they make them smaller?


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 Post subject: Re: bc1.37 bb question
PostPosted: Fri May 26, 2017 6:28 am 
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in the industry
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Joined: Wed Jan 19, 2011 11:14 am
Posts: 1772
Location: SYD
exactly they are full sized 6806 bearings as found in all pf30, bb30, evo386, osbb, pf30a and BBright :thumbup:

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 Post subject: Re: bc1.37 bb question
PostPosted: Sat Jun 03, 2017 7:18 pm 
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Joined: Thu May 25, 2017 7:05 pm
Posts: 13
Thanks for the help guys. Problem resolved :)


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 Post subject: Re: bc1.37 bb question
Posted: Sat Jun 03, 2017 7:18 pm 


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