You'll need 4 rubber rings ~1.5-2cm diameter, ( used on prop-savers ) and 4 M3x10mm Spacers.
Just squeeze it through the hole:
and lock it on the spacer:
you can use 4 extra spacers and mount the top plate:Good flying to you all :)
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No drift! Never had with the APM2. (which was o-ring mounted right from the start).
That said, I presume you have already done your best to balance props and if relevant, motors?
Hmm good point. I think that I will!
Do you still have any drift issues with your APM 2 3DR? That's what I am trying to eliminate, and I am almost 90% certain it's the vibrations
Jonathan,
My experiences with o-ring suspension so far are good and my APM2 3DR quad flies well even though my test flight activities has inflicted some slightly bent prop adapters (but I bought a bunch of new ones today) now inducing vibrations in the frame. If you look back you fill find a pic on my o-ring suspension.
I say you should not worry so much about lack of dampening. There is dampening in the O-ring rubber due to hysteresis related energy loss and I do believe the cable harnesses contributes as well. My advice: Just try it.
Tomas
Curious to see if anyone has any luck with the mounting technique for the APM 2.0. Did it significantly reduce vibrations and vibration induced drift issues during flight? I am hoping to spend the weekend doing some testing and analysis on vibration isolation, and this may be a candidate for testing. However, I am worried that there is really no dampener with this method. I would think that adding some stiff foam or vibe-gel between the o-rings and the stand-offs would at least provide some dampening in the x and y direction accels. I could be wrong though. Experiences?
@Robert,
You can see 4 ESC wires on the right, mag and gps are on the board so no wires here :)
how to connect ppm-sum to APM2 board (there is firmware support already)
For APM1 you'll need to update the ppm-encoder:
http://code.google.com/p/ardupilot-mega/wiki/BusPirate
http://ardupilot-mega.googlecode.com/files/ArduPPM_v0.9.87_Arducopt...
http://ardupilot-mega.googlecode.com/files/ArduPPM_v0.9.87_manual.txt
@Soren, yes its a dev-boards.
Hi,
Eeeh silly question maybe? But: I have ordered and paid for an APM2, and not received it yet. I was not worried as is says in the store it is a pre-order. But how come that some of you already have one ready to install? Dud you get an early batch, or are you developers or testers...?
Regards
Soren
I intended to say: "BTW, my comments are NOT to imply the o-ring idea is bad". My apologies for the typo...
One more learning from the FBL area. Cabling can be a significant conduit for vibrations from the airframe to the controller such that all the vibration isolation and dampening in the world won't help because there is a direct path through the wires to the circuit board. Therefore it's important to ensure that the wiring is of small gauge and is "dressed" such that it's loose. Adding a loop so there is flexibility and not bundling the wires tightly helps. Except for power leads I try to use #22 size or smaller for signal leads. Here's a bad photo showing the slight loop and small gauge wires on a Logo 600 with an SK720:
BTW, my comments are to imply the o-ring idea is bad. It's simple which is good. If there were some way to provide dampening it could be very effective.
THanks Gareth. Just checked it and it is very close but not touching so I think it's ok.
Hey Ron.
Are you sure the bottom side of your magnetometer isnt touching the imu board. It looks a little close...
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