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Thread: Dynamic Prop Balancing O340

  1. #1
    Senior Member N867SP's Avatar
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    Default Dynamic Prop Balancing O340

    So Ive lived with a little vibration for the past 200 hours. Ready to dynamically balance my prop. I own a Dynavibe and have balanced other engines previously. Typically Id cobble up a bracket to hold the optical sensor and accelerometer and attach it to a case half bolt. The issue Im having is the plenum on our aircraft. Id rather balance the prop with the plenum and oil cooler in place. I read that the factory dynamically balances every aircraft that comes off the production line. Would it be possible to get some information on how the factory performs this? Maybe some pictures of their setup?


    Pete Meyer
    Severna Park, MD
    CCK-1865-0078
    ✈️N9PW
    Pete
    ✈️CCK-1865-0078 N9PW
    Severna Park, MD W18

  2. #2
    Senior Member Jon Delamarter's Avatar
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    Default Re: Dynamic Prop Balancing O340

    We put the vibration sensor on the bolt just forward of the plenum. We have a plate adapter for the optical sensor that allows us to tape it down to the top of the oil cooler.
    Jon Delamarter
    Customer Support Manager
    Cub Crafters, Inc.
    jond@cubcrafters.com
    Office (509)367-5200
    Cell (509)833-6993

  3. #3
    Senior Member N867SP's Avatar
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    Default Re: Dynamic Prop Balancing O340

    Quote Originally Posted by Jon Delamarter View Post
    We put the vibration sensor on the bolt just forward of the plenum. We have a plate adapter for the optical sensor that allows us to tape it down to the top of the oil cooler.
    Thanks Jon. Pictures possibly?


    Pete Meyer
    Severna Park, MD
    CCK-1865-0078
    ✈️N9PW
    Pete
    ✈️CCK-1865-0078 N9PW
    Severna Park, MD W18

  4. #4
    Senior Member David H's Avatar
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    Default Re: Dynamic Prop Balancing O340

    I have done dynamic balancing on my other aircraft and it was very helpful. I will do this on the CarbonCub. I have my Catto 84x43 in the shop. Waiting for Fuel injected engine from Ly-Con.

    Pics would be helpful.

    Thank you,

    David

  5. #5
    Senior Member Jon Delamarter's Avatar
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    Default Re: Dynamic Prop Balancing O340

    I've asked Production to let me know next time they balance the prop on a Carbon Cub so I can take pics.
    Jon Delamarter
    Customer Support Manager
    Cub Crafters, Inc.
    jond@cubcrafters.com
    Office (509)367-5200
    Cell (509)833-6993

  6. #6
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    Default Re: Dynamic Prop Balancing O340

    Quote Originally Posted by N867SP View Post
    So Ive lived with a little vibration for the past 200 hours. Ready to dynamically balance my prop. I own a Dynavibe and have balanced other engines previously. Typically Id cobble up a bracket to hold the optical sensor and accelerometer and attach it to a case half bolt. The issue Im having is the plenum on our aircraft. Id rather balance the prop with the plenum and oil cooler in place. I read that the factory dynamically balances every aircraft that comes off the production line. Would it be possible to get some information on how the factory performs this? Maybe some pictures of their setup?


    Pete Meyer
    Severna Park, MD
    CCK-1865-0078
    ✈️N9PW
    Have you had good success with the Dynavibe. Looks like about 3 balance jobs would pay for one.

  7. #7
    Senior Member Jon Delamarter's Avatar
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    Default Re: Dynamic Prop Balancing O340

    Jon Delamarter
    Customer Support Manager
    Cub Crafters, Inc.
    jond@cubcrafters.com
    Office (509)367-5200
    Cell (509)833-6993

  8. #8
    Senior Member N867SP's Avatar
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    Default Re: Dynamic Prop Balancing O340

    Thanks for the pics Jon. More curious about the mounting of the accelerometer on the 340 w/plenum installed.


    Sent from my iPhone using Tapatalk
    Pete
    ✈️CCK-1865-0078 N9PW
    Severna Park, MD W18

  9. #9
    Junior Member
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    Default Re: Dynamic Prop Balancing O340

    Hey Jon, do I recognize that plane?
    JimG

    FX3 - N18JG

  10. #10
    Senior Member Jon Delamarter's Avatar
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    Default Re: Dynamic Prop Balancing O340

    Quote Originally Posted by N867SP View Post
    Thanks for the pics Jon. More curious about the mounting of the accelerometer on the 340 w/plenum installed.


    Sent from my iPhone using Tapatalk
    Unfortunately, we won't have a 340 powered Carbon Cub coming off the end of the line for about a month and a half.
    Jon Delamarter
    Customer Support Manager
    Cub Crafters, Inc.
    jond@cubcrafters.com
    Office (509)367-5200
    Cell (509)833-6993

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