Bottom Bracket Help
 

Hey all!

I'm a terrible mechanic and I have a question about bottom brackets. I'm looking at buying a new frame and the website says the bottom bracket on the new frame is "68mm ENG BSA". Now, I currently have a Quarq Cinqo on my Cervelo P2, which has a GXP style BB. What I don't know is if these two bottom brackets are actually the same thing. I really just want to know if my Quarq will fit my new frame.

Thanks!!!!
James

68mm is the width of an English std. road bike BB housing. Almost all new road bikes sold in the USA use tha standard.

http://www.sheldonbrown.com/gloss_bo-z.html#bottom

68mm ENG BSA designates the interface of the bottom bracket to the frame. This is a standard British-threaded 68mm wide bottom bracket shell. GXP describes the interface of the bottom bracket bearings to the crank spindle. For the new frame you simply need to use a BSA threaded GXP bottom bracket such as those made by SRAM and TruVative.

Sorry, you'll have to spell it out for me. Does that mean my Quarq will work with this frame?

Thanks!

If your Cervelo is currently equipped with a threaded bottom bracket, then your Quarq will work with the new frame 100 percent. If your Cervelo is equipped with a press-fit bottom bracket of some sort, you will need to buy a BSA threaded GXP bottom bracket, such as this: http://www.sram.com/truvativ/product...ath/term-id/42

Thanks! You just saved me a ton of time and headache!!

I'm sorry, but if you are a terrible mechanic and don't know BB terminology you may have just begun a headache in buying a new frame. There are many compatibility issues to consider when purchasing or moving components, and building a bike from the frame up is something I would recommend only for someone who has very specific needs (gained from riding, not from reading magazines) access to wholesale parts prices, or who is more concerned about bragging rights than performance. If you can afford a Cervelo P2 I would recommend hiring a shop to consult with you on the best bike for whatever purpose you intend, substituting some parts as needed.

I have an excellent mechanic who does all my work for me, it was just too late to call him with the question. I appreciate you elitism though, my ability to pick a frame has nothing to do with my mechanic abilities.

Not sure where you come up with the elitism. You will find many others here who would tell you the same thing with the information you presented. If you had included the first sentence above in your original post things would have been much clearer.