This is my 2nd gen vibration isolation method with the Sorbothane. The idea here is to hard mount the motors, allow the frame to absorb some of the vibrations, then isolate the FC board and cameras. Went with 3/4" carbon tubes to up the stiffness even more. To help dampen and isolate the FC board and camera the mass of the battery is added. It also helps that the battery is right there where the Sorbothane mount clamps onto the hub so the vibs have to work on the battery before heading out to the camera and fc board. For ease of changing batteries I always prefer to have the battery up top, here it was an added bonus.
So far it works pretty good! This is a fairly small quad and yet it is very stable. I'm actually using 9" props versus the 10" the motors can handle just due to clearance issues. I made the frame from a recycled frame so the 8" arms weren't intentional. Didn't have any 9" apc (or even CW props) so these HK props will have to due until I can make a slightly larger frame. The fpv gear got installed on the end of the tube in front of the battery and I got in some nice fpv flights over the weekend. Couldn't see the slightest vibration! I'm at work now, but I'll add some pics of it with the fpv gear installed tonight.
The critical thing is that the battery HAS to be strapped tightly! If its loose at all then the method doesn't work and it will oscillate. I didn't use velcro under the battery for this very reason, in fact I brushed on some 5 minute epoxy so that its slightly tacky and will keep the battery tight.
Macro shots always make things look dirtier!
Here it is with the fpv gear. Got it nice and consolidated too! For the first test I powered it with that little battery but all flights after that were sharing one battery.