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-   -   Bottom Bracket (https://www.bikeforums.net/road-cycling/705818-bottom-bracket.html)

xqwisit 01-08-11 05:25 PM

Bottom Bracket
 
Happy New Year fellow riders :)

Last month I got a great deal on a Blue RC8 road bike (It came with a mix of FSA and 105 parts) and my plan is to build it up piece by piece. I did some searching online and can't find out if my bike has a BB30 bottom bracket or something else. This is what it says on the website:

•Aerus Conquest T700 high modulus carbon Mono Box bottom bracket shell

Trying to figure out if I can buy any 170mm crank with BB30 or if it has to be something special. The hubby and I are trying to work on our own bikes and learning how to piece things together etc... so far I can install a headset, change my own tire and wrap my bars :) slow process but getting there. Any help would be appreciated. Cheers

ericm979 01-08-11 05:40 PM

BB30 is non threaded and takes 42mm OD bearings that press in. So it's a 42mm hole.

Shuke 01-08-11 07:01 PM

First link I got: http://www.rideblue.com/rc8.php

"english threaded" means not bb30

xqwisit 01-08-11 07:07 PM

Thanks Shuke... are cranks going to be easy to find or will it take some work? Will I have to look for something specific that says "english threaded?" Thank you so much

cwk132 01-08-11 07:15 PM

English threaded cranks are probably going to be easier to find than BB30. They're pretty common.

Homebrew01 01-08-11 07:41 PM


Originally Posted by xqwisit (Post 12048755)
Thanks Shuke... are cranks going to be easy to find or will it take some work? Will I have to look for something specific that says "english threaded?" Thank you so much

90% of the cranks are English threaded.

crazyarm07 01-08-11 07:59 PM

I think, but I'm not sure (I could probably google this, but eh, what fun would that be?) that english threaded BB's are marked with the "1.37 x 24 TPI" while Italian BBs aren't. Not totally sure, but I think this is accurate.

Shuke 01-08-11 08:37 PM

English, BSA, ISO, are all the same. They are extremely common. Almost every crank comes in english/BSA. Try Shimano, SRAM or FSA.


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