"Hi, i'd like to ask you a few questions over your serial link over the bullet M2.... thanks"

"Hi Nicolas, I am currently doing the same, however i came across the lag just like you. It's the rtsp buffer thats giving you problems. However, as i'm not flying fpv, it really isnt a big problem for me. I have a 100Mbit link between…"

"They are AXI 2814/22 motors with Graupner 11x5 props. I added the tubing to every motor and the vibrations are gone now. However it looks hideous :( It's absolutely what @R_Lefebvre said, the motor's frequency is the same as…"

"I'll go 50.00. If its what I think it is."

"the motor mount you are using is simply a aluminium plate..... and presently the c bar you are using are good to handle this vibrations, but they are not coming to the motor base they just fade out early.........! just extend it...... and…"

"All I could think about when looking how close to the propellers it will be is something aerodynamic, But a tube structure is pretty close or the next best thing I guess if you could not get it perfectly aerodynamic.  "

"Just out of curiosity What is your prop and motor combo , ive had some of the same issues attempting a downward facing prop  "

"Does it resonate without that carbon chassis(protective ring)? Not sure if you're fighting the right battle - stiffening will only transfer the vibration to the rest of the copter. Your chassis (specifically the protective ring) might be…"

"@John, actually, square tubes are not to bad in torsion.  They are obviously not as efficient as a round tube (stiffness/weight), but they're not terrible.  In fact, most people assume that round tubes are stronger than square tubes…"

"Hi guys, Thanks for commenting. I've balanced the props, they were nearly perfect from the factory. Couldnt find any extraordinairy vibrations from the motors too, those AXI's are great (used them before). I like the idea of a 3k woven…"

"Use a prop balancer and fine tune your prop. Use perfect tuned motor and motor mounts or tune them your self, most of time a piece of tape enough for balancing them. you can find hundreds pages about how to. "

"Like many others have already said. Square tubes and C bars are terrible when it comes to vibration harmonics. A nice 3K twill weave carbon fiber tube cost a bit, but is worth every penny if you want a vibration free copter."

"How balanced is  the motor and also the prop and prop adapter?"

"This might help with selecting a proper shape: (http://mathworld.wolfram.com/TorsionalRigidity.html). You may not need a circle, but certainly something better than half of an annulus. From the math you can tell that Greg was spot on with the…"

"Use the tube alone and you will have more thrust and no resonance. Resonance is a very powerful yet subtle phenomena. You know when you got it, like getting poked by a pin!!!"