Vibration Damping — Copter documentation
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Mount your flight controller on this board with double sided foam tape.
FlameWheel F O-Ring Suspension Platform Mount Vibrations are short coupled, so all that leaving excess corner clearance does is to require higher initial O-ring tension which reduces vibration damping responsiveness and allows the board to physically tilt more which is undesirable as it throws the sensor to airframe relationship off.
The disadvantage to O-ring suspension versus Gel pads is that it is mechanically more complex and it requires tuning of both of O-ring diameter and cross section. You can combine O-ring and gel pad design by using an intermediate plate and benefit from dual rate damping.
The holes should be large enough to allow the ear plugs to be inserted into them but not so loose that the board comes loose during hard landings.
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Ensure the holes are smooth so they do not cut into the ear plugs. Also keep the holes near the corners of your electronic module plate as possible to minimize unnecessary module movement.WHAT ARE THE SEXUAL BASES?! - Don't Blame Me w/ Meghan Rienks
Extra mass added to the board may improve vibration damping. Squeeze the earplugs through existing holes in the frame or cut new holes and the holes in the board upon which the flight controller is mounted.
Gimbal bulb type dampers themselves can work in tension or compression. The earplugs provide an additional damping medium with a different frequency damping range than the bulb dampers by themselves. The ear plugs also stiffen the bulb mounts up a bit preventing excessive free motion being caused by normal flight maneuvers. The flight controller is also mounted on anti-vibration grommets available from McMaster Carr package of 25 each part K64 recommended.
The G bulb type gimbal vibration dampers can be ordered direct from a variety of vendors: Frame flex especially arm flex is a big cause of asynchronous vibration, Frame arms should be as rigid as possible.
That is, it is a fairly high frequency with fairly low amplitude. This requires that we provide a short coupled damping and isolation range.
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The board itself does not need to have nor benefit from a range of motion that exceeds the amplitude of the vibration. Since excellent broad frequency range, high damping materials are available our biggest concern will be to use the proper amount of them to optimally damp our flight control board too much is just as bad as too little.
Although 30 durometer Sorbothane seems an excellent candidate, experience indicates that it becomes permanently compressed and is not as effective at vibration reduction as the Gel solutions. A link to a Blog about the first APM anti-vibration mounting system to achieve 0.
Motor balancing can also reduce vibration and especially so for cheaper or larger motors. Try multiple times, each time turning the tie wrap on the motor housing a bit until the vibration reduces or goes away. A small piece of Scotch tape can be re-positioned instead of the tie wrap if desired or for smaller motors. When you locate the spot where there is the least vibration and you should be able to hear itmark the spot directly under the clasp of the tie-wrap with a felt pen.