Spool up vibes

[PeteStewardson]

Does anyone else Ballistic suffer vibes during spool up? Only during spool up it goes through a head speed that causes a high frequency vibration, you can see if in the tail especially. But only a couple of seconds until it pulls through and then it's vibe free again. It's on every spool up so not blades straightening, and the vibration logs are clear in flight so not worried, just interested. I tried searching for ballistic videos on youtube but nearly every one seems to take off before full head speed has been achieved which I guess would remove the issue anyway.

[MPSHEP]

I do get a head wobble during spool up but goes away and fly's money!

[Freeskiken]

I don't remember having any vibrations. I know once they get up to head speed they are perfect. No vibrations.

[gitbse]

Your bearings all in good shape? Shot bearings can show themselves in weird ways sometimes. Also check all your gears for nice straight teeth, they could be catching with smaller loads, while flying better under full speed stress.

[PeteStewardson]

Yes bearings and gears all look 100%

It doesn't effect the flight at all and it looks vibe free and flies fantastically. I might try and get a vibration screen shot on spool up when I remember to see if there's a frequency a bit higher.

[gitbse]

What dampners do you use? They could be too hard, or wearing out. That would usually only show up at certain headpseeds.