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  1. #1
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    What A2C length was the Endo and Chili designed around?

    What's the ideal A2C for an Endo with 150mm forks and Chili with 160's?

    I thought Floats and Vans with 160mm travel should have an A2C = 545.3mm. So that my 36 Floats lowered to 150mm (using a 10mm spacer) should have an A2C =535.3mm.

    When I measured my forks I got this:


    2011 Fox 36 Floats 150mm: A2C = 544mm (theoretically should be 535.3mm).
    2010 Fox 36 Van AVA'd 160mm: A2C = 548mm (should be 545.3mm).

    Seems my AVA'd Vans are within spec but what’s up with the Floats? I'm thinking they will send the Endo geo out by a degree? The question is what axle to crown (A2C) length was the Endo (@150mm) and Chili (@160mm) designed around?
    2013 Knolly Endorphin | 2013 Knolly Chilcotin | 2014 Knolly Podium.
    Tweed Valley, Scotland.

  2. #2
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    Knolly site says 533 and 555 including headset.
    Sipping the Knolly Whisquillappa

  3. #3
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    Quote Originally Posted by catch22 View Post
    Knolly site says 533 and 555 including headset.
    thanks, how much is factored in for headset? im guessing its about 10mm (roughly that of an external lower cup)?

    Doesn’t really make sense for the Endorphin though. Its says on Knolly website 533mm incl headset, and measurements were based on a 150mm fork, but which fork??
    Last edited by cfrench; 11-17-2013 at 09:52 AM.
    2013 Knolly Endorphin | 2013 Knolly Chilcotin | 2014 Knolly Podium.
    Tweed Valley, Scotland.

  4. #4
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    Quote Originally Posted by cfrench View Post
    What's the ideal A2C for an Endo with 150mm forks and Chili with 160's?

    I thought Floats and Vans with 160mm travel should have an A2C = 545.3mm. So that my 36 Floats lowered to 150mm (using a 10mm spacer) should have an A2C =535.3mm.

    When I measured my forks I got this:


    2011 Fox 36 Floats 150mm: A2C = 544mm (theoretically should be 535.3mm).
    2010 Fox 36 Van AVA'd 160mm: A2C = 548mm (should be 545.3mm).

    Seems my AVA'd Vans are within spec but what’s up with the Floats? I'm thinking they will send the Endo geo out by a degree? The question is what axle to crown (A2C) length was the Endo (@150mm) and Chili (@160mm) designed around?

    I think "Ideal" would depend on personal preference. There will also be some variability on A2C depending on how much preload you are running. More main spring preload will compress the negative/topout spring to some degree. I've been running a 180 mm 66 as my trail fork on the Chilco, and other then the weight, I really like the geometry of the slacker head angle/taller bottom bracket.

  5. #5
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    It seems that the culprit is the air assembly inside the floats. The spring can get worn so that it does not push back on the air pressure in the fork and thus you end up with over extension of the fork. I have added a 10mm spacer to a 160 fork and still have 162mm stantion showing. At the very most I should have 157 (150 travel and an extra 5 to 7mm extra which varies on the individual fork and the spring in the air assembly). Ive ordered a new assembly which wasn't too expensive and this should drop the A2C by 15mm thus bringing the lowered float back into range of knolly specs. it should also make the fork perform a lot better.
    2013 Knolly Endorphin | 2013 Knolly Chilcotin | 2014 Knolly Podium.
    Tweed Valley, Scotland.

  6. #6
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    the new pikes are 532mm a2c...so knollys original measurement of 522 must have been a revelation 150 or float 140 with 32mm stations.
    2013 Knolly Endorphin | 2013 Knolly Chilcotin | 2014 Knolly Podium.
    Tweed Valley, Scotland.

  7. #7
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    Total guess here but I would have thought it was a 34 at 140mm. As others have mentioned though, it's all personal preference. Seems lots of folks like to go with a 10mm longer fork compared to rear travel on the Endorphin and Chilcotin. I'm a total non-hucker and still love a 170 Lyrik with zero stack headset on my Chilcotin.
    Sipping the Knolly Whisquillappa

  8. #8
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    replaced the air spring assembly on the floats. the old spring (first) is tired and that's why its shorter than the new spring (second)...the difference after the 10mm spacer is inserted is 17mm...replacing the spring has gave me a visible stantion of 157mm, normal for a 150 fork. the fork is also much smoother and tighter feeling in its travel, and seems to rebound better. the A2C is also reduced to bring the geo back in spec.What A2C length was the Endo and Chili designed around?-after2.jpg
    Attached Thumbnails Attached Thumbnails What A2C length was the Endo and Chili designed around?-before.jpg  

    2013 Knolly Endorphin | 2013 Knolly Chilcotin | 2014 Knolly Podium.
    Tweed Valley, Scotland.

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