I've talked to Lockwood about the chatter. They did not seem to think
it was out of the ordinary. I would feel better if I had some input
from people running them though.

I'll have to check the inertia spec. It was professionally made for the
912 so I assume that it is correct, but it definitely never hurts to
check.

I did read the installation manual and yes I do get the bulletins. My
912 had to have the oil pump drive pin and new stator assembly
installed ($$$). This was performed, along with a complete inspection,
prior to installation and first start-up.

Thanks for your input.

- RP


You are asking a news group instead of an authority such as Lockwood,
a
certified Rotax repair station? http://www.lockwood-aviation.c=AD=ADom/

OK here goes:


A five (or ten!) year old 912 certainly should have been gone through
before installing it on your airframe. It will need new rubber seals
on


the water pump as a minimum. The gear box on the 912 80 HP (black
valve


covers) has been very good. Not true with the 912S 100 HP engine (with

the green valve cover). Rotax has added a slipper clutch and a higher
torque starter for the 912S. Your problem may be related to the prop.
Does it meet the inertia spec for the Rotax? Too high an inertia will
eat your gear box.

Have you read the installation manual at www.rotax-owner.com and
signed up for service bulletins?