extremez Posted February 1, 2016 Posted February 1, 2016 I have a SRAM BB 30 crank that does not fit my MTB frame which measures 40mm in diameter Can I get a BB bearing to fit or do I have to change the crank? I so does anyone have a crank that they would like to swop?
raptor-22 Posted February 1, 2016 Posted February 1, 2016 Does you r frame accommodate a pres fit BB or threaded BB> Brand and model of frame would b helpful with year model
JA-Q001 Posted February 1, 2016 Posted February 1, 2016 And what SRAM BB30 do you have? If XX (2x10), no, you wont be able to make it fit. If anything else, then the type of BB you need depends on you frame.
dman2 Posted February 1, 2016 Posted February 1, 2016 Generally advised to change your BB if you change your crankset type. I'm sure your LBS will sort you out.
Pure Savage Posted February 1, 2016 Posted February 1, 2016 Generally advised to change your BB if you change your crankset type. I'm sure your LBS will sort you out. Seems as if frame manufacturers get paid bonus's for every new BB they create.
Mike Bike Posted February 1, 2016 Posted February 1, 2016 BB30 bearings fit into a 42mm shell, so im guessing youll have to change cranks
splat Posted February 1, 2016 Posted February 1, 2016 BB30 shell diameter is 42mmPF30 is 46mmBB92 is 41mm Do you have the correct BB installed?and does the crank match the BB standard? There are adapters you can buy, depending on the combination you have.
extremez Posted February 1, 2016 Author Posted February 1, 2016 Does you r frame accommodate a pres fit BB or threaded BB> Brand and model of frame would b helpful with year modelThe frame is a Volcan FS 29C Frame which only accommodates a press fit BB
JA-Q001 Posted February 1, 2016 Posted February 1, 2016 If I can see the type of BB on Google correctly, you will need a BB4130, rotor, FSA and race face does have them, maybe contact Evobikes for the Rotor one. You will have to take all spacers and lock rings off of the spindle and install it with only a wave washer and some shims if needed.
extremez Posted February 1, 2016 Author Posted February 1, 2016 And what SRAM BB30 do you have? If XX (2x10), no, you wont be able to make it fit. If anything else, then the type of BB you need depends on you frame.It is a XX (2 x 10)
splat Posted February 1, 2016 Posted February 1, 2016 The frame is a Volcan FS 29C Frame which only accommodates a press fit BB BB30, PF30 & BB92 are all pressfit type of bearings, but they match different shell diameters.And then you need the correct crank spindle for the BB, or find the appropriate adaptor (if available).
raptor-22 Posted February 1, 2016 Posted February 1, 2016 If I can see the type of BB on Google correctly, you will need a BB4130, rotor, FSA and race face does have them, maybe contact Evobikes for the Rotor one. You will have to take all spacers and lock rings off of the spindle and install it with only a wave washer and some shims if needed. the SRAM BB30 axle is not long enough to allow the fitment of the crank to a BB92 frame (the Volcans BB is BB92). Removing spacers and preload adjuster will not help the situation. He will need a Cannondale Hollowgram SiSL2Race Face CinchRotor REX
JA-Q001 Posted February 1, 2016 Posted February 1, 2016 the SRAM BB30 axle is not long enough to allow the fitment of the crank to a BB92 frame (the Volcans BB is BB92). Removing spacers and preload adjuster will not help the situation. He will need a Cannondale Hollowgram SiSL2Race Face CinchRotor REX Thats why I asked about the if it is a XX 2x10, thats the only true SRAM BB30 MTB crank, all others are in essence BB386. Most except for XX 2x10 has a BB to make it work, I have done this myself. But unfortunately for the OP, I see he mentions that this is a XX 2x10, so unfortunately, he would need a new crank.
Pure Savage Posted February 1, 2016 Posted February 1, 2016 the SRAM BB30 axle is not long enough to allow the fitment of the crank to a BB92 frame (the Volcans BB is BB92). Removing spacers and preload adjuster will not help the situation. He will need a Cannondale Hollowgram SiSL2Race Face CinchRotor REX https://www.bikehub.co.za/classifieds/169516-rotor-rex1-enduroplanet/ Would this work for the OP. Comes with BB
raptor-22 Posted February 1, 2016 Posted February 1, 2016 Thats why I asked about the if it is a XX 2x10, thats the only true SRAM BB30 MTB crank, all others are in essence BB386. Most except for XX 2x10 has a BB to make it work, I have done this myself. But unfortunately for the OP, I see he mentions that this is a XX 2x10, so unfortunately, he would need a new crank. Hi sorry man, your post is confusing. So the XX2x10 is the only one that will not work?My tjommie recently built a Anthem Advanced and tried to fit a XX1 to the bike using BB4130 and the XX1 BB30. Axle too short. I think to make it work he needed to fit bearings that press into the frame deeper than the RF or Rotor BB4130 cups allow (they have a stop lip machines to govern the depth the bearings can be pressed in. Could you maybe clarify exactly what works and what doesn't as the only way I can see an XO1 or XX1 BB30 crank fitting is if the bearings are pressed about 3mm each side past the edge of the BB shall lip
raptor-22 Posted February 1, 2016 Posted February 1, 2016 He would need to ask the owner to check the axle length. Axle needs to be about 92mm or longer between the bearing seat (precision machined area on the axle) from what I can measure
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