Mags vibration
I have a problem, couldnt find it under search thru all the previous posts.
I have a rotax 912UL , it was overhauled about a year ago, and i have just under 60 hours on it. The issue is, around 2750-3100 there is a strange vibration noise which is out of the ordinary. when I switch it to one mag whether it is right or left the vibration noise goes away. It only is there when I am running both mags.
Does anyone have any idea what this could be?
The engine runs beautifully makes same power as normal everything else is normal. Just for the odd vibration it has within that range. Ive already put new spark plugs in, and at first I thought that helped but apparently it didn't.
Any help would be appreciated.
Thanks,
Charles