bones

Can any of the LEARNERED folks on here be able to tell me whiether the adding of friction reducing additives is advisable/recomended/not recomended.
My first thoughts is no, as the clutch in the gearbox uses the same oil as the motor..
Yes Nic i did look in the manual, and no Nic i havent rang the importer to ask them, only thought of this late this arvo..
Thanks guys

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bones

then thanks to Scott Essex off the yanky site i got this info,

Rotax recomends synthetic oil, Remember, rotax builds more motorcycle engines than anyone else in Europe, the 912 is the latest motorcycle technology applied to aircraft use, tight tolerances, exotic metals, high RPM, etc.
Use synthetic motorcycle oil but do not add any friction modifiers.
DO NOT use aircraft oil like aeroshell etc. Both will harm the clutch.

Yes the gearbox and engine use the same oil. Most motorcycles as well. Motorcycle oil is forulated with special additives to handle the shear-loads of gears, and usually more zinc as an antiwear additive, zinc doesn't like catalitic converters, so automotive oil is formulated differently..
Sort of confirms my thoughts....

__________________
http://www.zenogyro.com.au
Good gyroplanes are not cheap, cheap gyroplanes are not necessarily good