Singlespeed & Fixed Gear - Help with new cranks and bb (sram omnium)

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orbThorn
06-08-10, 06:50 PM
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/product/BB408D00-Sramtruvativ+Gxp+Bb+Cupset.aspx

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

Any advice would be appreciated.


tek336
06-08-10, 08:00 PM
there is only one BB for that crank. The one you highlighted @ jenson is the one. The english model.

cc700
06-08-10, 08:06 PM
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.


orbThorn
06-08-10, 09:48 PM
ok thanks dudes, I'll order it up and hope it lines up ok

Soil_Sampler
06-09-10, 03:43 PM
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