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Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 3:59 pm
by wheelzqc
How possible/easy is it to put a Hollowgram crankset in a BB386 frame ? As I understand it bb386 is BB30 diameter (good!) with the length of a GXP/BSA cranket. Is it just a matter of picking the right BB for the frameset ?

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 4:10 pm
by wheelzqc
Ah google...
http://shop.fullspeedahead.com/en/type/ ... 86-bb-road

I guess it's that with the usual spindle and Cannondale spacers for BB30.

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 4:10 pm
by Weenie

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 6:47 pm
by topflightpro
Not easy.

The Cannondale spindle isn't really long enough. IIRC, the new BB30a is a 5mm longer, but that is still too short.

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 7:17 pm
by ms6073
Short answer, not going to work regardless of spindle length. Long answer, unless you are planning a single ring setup, then longer spindles are not going to help because unlike the spider of a BB386 crank, a Hollowgram BB30 crank lacks any offset, thus the longer spindle will only serve to move the chain rings further away from the frame.

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 9:14 pm
by NiFTY
This has been discussed ad nauseum
It won't won't work. There are longer axles for myb but if used on a road bike q factor will be huge and chainline will result in a nonfunctional drivetrain.

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 10:18 pm
by uraqt
So the q factor will be no bigger than a fat bike so not sure that is an issue and the longer spindle doesn't move the chain rings further away from the frame.

However the chain line will be off as the spider is not offset back to the frame like a BB386 crank. The question is how much is it off. I think like ms6073 said single should be ok

C

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 10:21 pm
by uraqt
here are some great pix to see the offset

https://www.bikerumor.com/2011/12/22/fs ... n-weights/

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 11:27 pm
by LouisN
Though about getting a new frame, but now I see it's BB386 only.
And I like my Hollowgram SiSl's/4iiii PM combo quite a lot.... :?

Louis :)

Re: Cannondale Hollowgram in BB386

Posted: Wed Aug 02, 2017 11:27 pm
by Weenie

Re: Cannondale Hollowgram in BB386

Posted: Thu Aug 03, 2017 4:30 am
by wheelzqc
Same here. Ah well. Thanks for the info.