Is there any way to put a bb30 crank system (I have cannondale) into a bb86 frame type system??

Thank you.

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Theforcetraining.com

BB30 bearing OD is 42mm. BB86 shell ID is 41mm. So it won't fit.

not possible at the moment

but know that Starnut on this forum are working on a 3 piece axle for hollowgram si (the alumnium one) and sisl that will make it possible, but i gues you loose some of the benefits of bb30 with it.

well the OD of the BB30 bearing is 42, but you just need a bearing with a ID of 30 and OD that is less than 41.

Quick search on Boca Bearings yields this.

http://www.bocabearings.com/bearing-inv ... RU-30x37x4

$60 a pop though.

You will still have to use a longer-than-true-bb30 spindle like a Zipp Vuma quad

Yeah, that's what I thought. Thank you guys. Hate getting some team bikes.

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Theforcetraining.com

Sorry to drag up an older post but is there a solution to this problem?

I might be getting a team Storck Fenom next year (BB 86.5), but want to try and transfer my SiSl to it as I have the Quarq spider.

Is there any way to get this to work?

Thanks for any help.

No. Not really.

BB86 shell is 86.5mm wide whereas BB30 is designed for 68mm width shell - the crank spindle is too short. The only 30mm spindle crank that would physically fit is a Rotor, but then you still need to sort the bearings.

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Just ride

In short, you are trying to squeeze a short and thick rod into a long and narrow opening. Not gonna work.

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Also, take a look at how your hollowgram crank mounts on the Cannondale frame and you will notice the chainrings are pretty snug against the bottom bracket sheel - i.e. no offset. That means that even with a longer spindle you are simply shifting the chainrings further out/away from the optimal chainline.

In addition to the Rotor 3D+, there is also FSA's BB386 offerings for which I thought I read that SRM will be offering an SRM K-Force 386. To make the Rotor 3D+/BB386 cranks work with a BB86 frameset, Rotor UK has the Press fit 4130 BB86 converter specifically for use with BB86.

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Michael - The Anaerobic Threshold is neither...

Thanks very much for the replies guys.

First world problems eh? Upset because I can't transfer my power meter to my new team bike ha ha