Zero offset DM oval chainring for Hollowgram?- Mtbr.com
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  1. #1
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    Zero offset DM oval chainring for Hollowgram?

    Given all the reports of carbon crank failures, I think the Cannondale Hollowgrams should be more desirable, especially for singlespeed use. Love the idea of direct mount / spiderless rings since I've had too many broken chainring bolts (aluminum of course, not steel). Also ran into varying chain tension and chain retention issues due to out of round spider/ring combos. Once it's all dialed it's usually fine but I still think DM is a great idea.

    The problem is offset is fixed and there are way too many damn spline patterns to allow mixing & matching.

    122 mm spindles are easy to source now and yield a better (for me) Q-factor of about 160 mm vs. 170 mm typical (ow my knees). Unfortunately nobody makes a DM chainring with zero offset needed for 48 mm chainline. Seems like such a simple and obvious great combination for singlespeed.

    Maybe if more people figure this out and show support a company like Absolute Black will step up and fill the void!
    Last edited by B R H; 03-06-2018 at 02:08 PM.

  2. #2
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    Edited original post on real computer.
    Last edited by B R H; 03-06-2018 at 01:54 PM. Reason: Delete.

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