As a lot of us have to replace the M3x8mm screws in our IRIS engines with the M3x10mm screws, I was wondering if anyone has tried to mount a Anti Vibration 3mm Fan Rubber Grommet (amazon.com/Wire-Protective-R … B007POD8LC) between motor and frame?
In theory this should reduce vibration induced by the motor and/or the propeller closer to the source and thereby reduce vibrations on the Pixhawk and Camera.
Any thoughts?
In theory, it sounds like it could help, BUT do remember you need to get the motors TIGHT or else they could wobble under load/rotation, and these grommets may make them wobby themselves free.
What is the goal here, to prevent the screws from coming loose? If so, this seems WORSE, and anyways blue or red loctite should be sufficient. My $0.02…
The goal would be to reduce vibrations on the Quad caused by the motors and/or propellers.
Yes, you are right: One would have to fasten the screws very tightly and use loctite in addition to it.
The grommets should be stiff enough (in contrary to rubber) that it is possible to tighten the screws.
If you’re trying to isolate the motor from the arm, perhaps the rubber grommets on the INSIDE of the frame mounts, where the motor sits into. So sandwiched in between the motor housing and the Iris frame… A thought. Try it both ways maybe…
Yes, that’s exactly what I was thinking off: Place the grommets between the motor and the frame on the inside. It will be a royal pain to do that as you have to take the engine out.
I did some vibration tests with a laser yesterday: The motors itself exert pretty much no vibration. Only once you add the props you get some.
The purpose of the Ardupilot /forum is a question and answer support forum, not a discussion forum. Please keep you Do IT Yourself modification discussions to the Iris User Group on DIY Drones.
Thank you.