I Have inserted the starting pass at a much needed section on Vibration Control in the ArduCopter Wiki and would very much like feedback for corrections or additions from you all.
This is the close coupled mount that I use on my little F330 Flamewheel.
To achieve this plus and minus one tenth G vibration dampening.
In any case, please review the Vibration Control Wiki section under Assembly and give me some (constructive) feedback.
Thank You,
Gary McCray
Comments
No, Josh, not the suspended method, different kettle of fish entirely some good, some bad.
No, all I'm saying is that a lightly tensioned rubber band or 2 is better for securing your Flight controller board over the Gel pads than a Velcro strap.
Since the Velcro doesn't really have much elastic give (springiness) it acts to transmit vibration directly from the frame straight to the flight control board, effectively bypassing your gel pads.
The rubber bands act like springs thus allowing your flight control board to not be directly connected to the frame and letting the gel pads do their work.
Normally these Velcro straps are great things, this just happens to be one place where maybe not so much.
No issues here (sample below). Maybe your image is locked by another program?
Ah I see, still the suspended method. While it does appear to be one of the best methods, I'm getting +/- 5 with a little less gel and a strap. The ease of installation on any platform for less dampening is a sacrifice I'm willing to make.
Is anyone else experiencing problems attaching an image in DIYD Blog Posts? Trying to load up a small JPEG image and won't go - just grinds away
Hi Rob, I do plan on using your mounting holes and hardware. I first was going to mount it on a different plate so had to use the case but now have switched back to mounting it with your antivib hardware.
I figured from the beginning that isolating the APM from vibration would be a necessity for max stability. I have had a chunk of fairly high density closed cell silicone (yes, real silicone) foam for many years that I have used for soldering and sweating pipe fittings on. Its about 7mm thick, and from the start of my arducopter project, it has given me extremely stable readings due to its great vibration absorption. I have no idea where to get more, but if you can find some, it works great.
Hi Josh, no link, but here is a link to the anti vibration Blog by Hugues where I suggested the same thing (replace velcro strap with rubber bands) and he achieved a significant improvement.
http://diydrones.com/profiles/blogs/very-good-anti-vibration-result...
You need to have your retaining strap be elastic so it can move in response to the vibrations without transferring them.
Gary I can't see a link or image for what you're talking about where you said lose the ties for X.
Clearly not, still awaiting arrival of the secondary dampening material for it.
However, the one at the top of this article (my little F330) I flew today and stable as a rock in gusty 15+ mph winds.
I will be inserting very low density foam under the plate and 1/2" 30 durometer Sorbothane bumpers under each corner of my APM which will be secured with 2 lightly tensioned rubber bands to the plate.
I also have a somewhat larger plate with antivibration grommets (instead of O-ring suspension) at each corner which I will be trying as well.
Gary - have you flown this vibration reduction plate yet?
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