Re: Rotax 912 uls shakes violently
by Garrett Wysocki » one year ago
I had this happen once, it was a broken /leaking carburetor rubber flange which connected the carburetor to the intake manifold.
Re: Rotax 912 uls shakes violently
by Leif Westin » one year ago
Hello
Sorry I wrote wrong on mag drop should be 150rpm. Rubber motor insulators are new approx. 100h. Engine hours 1700h. Will disassemble the gearbox for inspection. Thanks for all the tips from a snowy Northern Sweden.
Re: Rotax 912 uls shakes violently
by Aviation Design » one year ago
Check the carbs before you tear into the gearbox. I’ve heard this gearbox issue brought up often as an immediate go to and people fail to check the east things first before opening up the engine.
make sure that the carbs arnt spitting fuel from the vent lines. Verify fuel height in the bowl- a crashed float will cause excess vibration from an overly rich condition and is a 2 minute fix. Many things can be done BEFORE you open up that gearbox and possibly introduce further errors.
Re: Rotax 912 uls shakes violently
by Roger Lee » one year ago
Also check the metal engine mounting. I just remembered I had one like this years ago and it was a broken weld on the frame.
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
Re: Rotax 912 uls shakes violently
by Leif Westin » one year ago
Hi all, I'll be back when I find the error
Best
Leif Westin
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