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Clever flexible mount

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  • darryl
    replied
    I used the yellow smiley face balls. Comes to mind you could use memory foam mattress material.

    Leave a comment:


  • JRouche
    replied
    Originally posted by darryl View Post
    To further dampen vibrations- I once built a camera mount for an RC helicopter. I used those squishy yellow balls for damping material. You could add stuff like that for an increase in damping ability.
    I know thoughs. The wires would "sing" under tention so they applied various dampers on the lines. I remember the bright color they used for them. Big dampers. Bright colors. JR

    Leave a comment:


  • darryl
    replied
    To further dampen vibrations- I once built a camera mount for an RC helicopter. I used those squishy yellow balls for damping material. You could add stuff like that for an increase in damping ability.

    Leave a comment:


  • Doozer
    replied
    Originally posted by JRouche View Post

    Well that would be intimidating. Inch and eight spring wire? No thanks. Way passed my pay grade. JR
    What, We had girls making them !? !! ?!
    Seriously.
    Good tooling is all it takes.

    -D

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  • JRouche
    replied
    Originally posted by Doozer View Post
    Iall the way up to 1-1/8" cable.

    --Doozer
    Well that would be intimidating. Inch and eight spring wire? No thanks. Way passed my pay grade. JR

    Leave a comment:


  • Doozer
    replied
    Originally posted by ikdor View Post
    We use them as well on our ships for mounting electronics racks. It's old but the first guy to come up with it was clever indeed.
    We built those too. Mounted the panels on linear guide rails, and supported with isolators.

    -D

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  • Doozer
    replied
    I used to be intimately involved in making those.
    From 3/32" cable, all the way up to 1-1/8" cable.
    I made the machines and the tooling. I made
    crimp presses, cable tensioners, straightening
    machines, cutting machines, the whole gamut.
    I even made duplicate machines and tooling for
    a production line we started in China.
    Any questions about these isolators, I probably
    know the answer.

    --Doozer

    Leave a comment:


  • Bob Engelhardt
    replied
    Originally posted by metalmagpie View Post
    ...
    If you crimped a mass onto one of those wires and then coupled it to a source of vibration of known frequency you could measure its resonant frequency. If you did that with a few different lengths you could use the data to extrapolate other length/resonance data points and then you could build a vibrometer. Hold it against a machine like a tuning fork and see which wire went crazy.
    ..
    Speaking of resonance-based vibrometers, I have a small-engine tachometer that works on that principle. It has an adjustable length wire that vibrates at calibrated frequencies. Pretty cool: https://www.amazon.com/dp/B0044AV5VK/
    Video: https://www.amazon.com/vdp/eb9b9b45b...=dp_vse_lbvc_0
    Last edited by Bob Engelhardt; 10-06-2021, 12:16 PM.

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  • metalmagpie
    replied
    Looking at that site, I see they have tuned dynamic dampers made from wire rope. These are clamped onto pipes adjacent to vibrating machinery to absorb vibration. That is so awesome it makes me want to turn cartwheels!

    If you crimped a mass onto one of those wires and then coupled it to a source of vibration of known frequency you could measure its resonant frequency. If you did that with a few different lengths you could use the data to extrapolate other length/resonance data points and then you could build a vibrometer. Hold it against a machine like a tuning fork and see which wire went crazy.

    I made a simple dynamic damper for a Jet 17MF drill press once. It worked pretty well; cut vibration a lot.

    metalmagpie

    Leave a comment:


  • Fasttrack
    replied
    Originally posted by ikdor View Post
    We use them as well on our ships for mounting electronics racks. It's old but the first guy to come up with it was clever indeed.
    Yep - used all the time to decouple our sensors from various military ground vehicles, too.

    Leave a comment:


  • ikdor
    replied
    We use them as well on our ships for mounting electronics racks. It's old but the first guy to come up with it was clever indeed.

    Leave a comment:


  • Illinoyance
    replied
    Those cable loop vibration isolators are a commercial product.
    https://vibrodynamics.com/our-produc...ope-isolators/

    Leave a comment:


  • J Tiers
    replied
    It is clever, but it is not new at all. I think the idea was used in the 1960s, and was not new then.

    Makes a good "decoupler", with enough friction to not bounce.

    Leave a comment:


  • Jerrythepilot
    replied
    Ingenious!

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  • Bob Engelhardt
    started a topic Clever flexible mount

    Clever flexible mount

    This is a part of a camera mount for a helicopter. Two surfaces are connected all around with coiled wire rope. It's intended to keep helicopter vibration from the camera. Really clever I think and something I hadn't seen before. (From this YouTube video: https://www.youtube.com/watch?v=2pDw8C8965I)


    Click image for larger version

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