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)
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Clever flexible mount
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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.4357 2773 5150 9120 9135 8645 1007 1190 2133 9120 5942
Keep eye on ball.
Hashim Khan
Everything not impossible is compulsory
"There's no pleasing these serpents"......Lewis Carroll
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Those cable loop vibration isolators are a commercial product.
https://vibrodynamics.com/our-produc...ope-isolators/
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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
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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.
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Video: https://www.amazon.com/vdp/eb9b9b45b...=dp_vse_lbvc_0Last edited by Bob Engelhardt; 10-06-2021, 12:16 PM.
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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
DZER
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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 seldom do anything within the scope of logical reason and calculated cost/benefit, etc- I'm following my passion-
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Originally posted by darryl View PostTo 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.
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