Hello Richard!
I noticed that the replies to your vibration inquiry included everything
external. My 912, at about 400 hours started developing a significant
vibration that drove me nuts until I sent in the propeller speed reduction
assembly in for service. Upon disassembly, I noticed that the primary gear
set from the crankshaft to the driving dog was worn. Whatever frequency was
associated with that apparently translated to low frequency vibration outpu
t
to the gearbox and engine. I replaced the gear set in addition to the usual
servicing of the gearbox and this made the engine smooth again. An internal
problem, not external. I don=B9t know how many hours you have on your Rotax
and if you have serviced the gearbox at the recommended 200 hour intervals
but this can make a significant difference and has proven out in other
Europas with same complaint.
Good Luck and ...
Happy Skies!
kp
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