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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 06-08-10, 06:50 PM   #1
orbThorn
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Help with new cranks and bb (sram omnium)

I've had a set of sram omniums laying around for a while now and I've finally got the time to install them. I have an 05 pista and right now it has the stock sugino bb and shimano 600 cranks. My wheels are deep vs laced to formulas.

With that said, I was never the best at figuring out chainlines. On the two bikes I've built myself, I pretty much winged it and both chainlines came out ok (using the inside ring on one of them). I know I need a new bb since the cranks have external bearings. I don't need anything super nice, just something that will work with my setup. How about this guy? http://www.jensonusa.com/store/produ...Bb+Cupset.aspx

So will the English 68/73mm work with my bike/wheelset?

Any advice would be appreciated.
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Old 06-08-10, 08:00 PM   #2
tek336
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there is only one BB for that crank. The one you highlighted @ jenson is the one. The english model.

Last edited by tek336; 06-08-10 at 08:01 PM. Reason: addition
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Old 06-08-10, 08:06 PM   #3
cc700
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it's a system called BB30. i have a set of elita's on my road bike that use the same bb.

your chainline will be fine. maybe not perfect, but fine.
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Old 06-08-10, 09:48 PM   #4
orbThorn
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ok thanks dudes, I'll order it up and hope it lines up ok
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Old 06-09-10, 03:43 PM   #5
Soil_Sampler
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Omnium

Quote:
Originally Posted by cc700 View Post
it's a system called BB30.
The Omniums are not BB30 standard.

http://www.bb30standard.com/


Enduro and Chris King make BB's for the Omnium's.

http://chrisking.com/bottombracket
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