HI, I have a question. We have been flying our coupe (TF-ZZZ) the last two weeks and one thing worrys us. We have found that when we push the throttle above 2100RPM it starts sounding funny, like a deep thumping sound. This happens in the air but not on the ground. Note that we have a continental
65hp engineI am pretty sure that the crankshaft is not detuned. I suspect
that this is a problem with the engine mount. I could use some thoughts
on
this.
The second question is about buffing aluminum coupes. What is the
best
stuff to use to keep the plane shining and where do I get some?
One last thing. What are you guys getting from your E415C´s in ground
roll on a dry grass Rwy?
Gummi
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