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  1. #1
    Senior Member Teuobk's Avatar
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    08.04.18
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    Default Camera view of chain, shifter, and rear suspension

    We decided to attach a camera to the floor of our Phoenix F1k.12 and point it backwards at the chain, rear suspension, wing, and Geartronics shift actuator during a testing day today.

    Ignoring the COPIOUS amount of tripod grease fling (yeah, yeah...), the result was interesting and perhaps even a bit mesmerizing. The chain in particular is notable for the degree to which it moved/whipped, this despite the chain having been freshly tensioned to the "quarter inch of deflection at the tightest point" spec immediately before this session -- but we might be revising our approach going forward.

    https://youtu.be/3jMrrgHQljc

    Enjoy!

    Jeff
    Last edited by Teuobk; 06.07.24 at 7:32 PM.

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  3. #2
    Contributing Member RussMcB's Avatar
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    Default

    I did something similar at a chassis dyno (years ago, video lost).

    It was very interesting. Chain was often in "waves".
    Racer Russ
    Palm Coast, FL

  4. #3
    Senior Member
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    Default Guide Block

    On the Citation F1000 cars I had a "guide block". It was made from Teflon. I had it mounted about midway between the drive sprocket and the driven sprocket. The block limited the whipping of the chain. On the Citation, the problem is a bit worse because the distance between the 2 sprockets is a bit long. I mounted the oil tank between the engine and the differential.

    You might consider such a block to minimize that chain movement.

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  6. #4
    Contributing Member
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    Default

    That is pretty cool and kind of what I suspected was going on. Lots of mostly failed attempts to minimize the chain movement and I have to ask whats the harm? This distance between sprockets on a bike is at least as long if not longer and the tension varies based on rear wheel movement up and down, which we obviously don't have.

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