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<DIV><FONT size=3>Hacker has used three different greases that I'm aware of and
I'm suspect there's more. I think they're experimenting too. The problem with
ANY grease in a gear train is that the grease gets pushed out of the way as the
teeth of the gears mesh. That's why the transmissions and differentials in our
cars use oil rather than grease. The oil gets moved aside to a degree as well,
but flows right back into the game. Grease gets pushed aside and stays aside.
With that in mind, we tried 10 flights with Mobil 1 75W-90 gear oil last summer.
The gearbox sounded great and felt VERY smooth. Unfortunately, when we broke it
down after ten flights, most of the oil was gone. Obviously, the fit between the
"crankshaft" and the bearings it runs in is not as tight as what we're used to
in a glow motor. Too bad, because the gearbox was very happy with the gear oil
in there. I only mention this to prevent someone from trying this if they think
of it. Ten flights was okay and the gears still had an oily sheen on them, but I
think it would've gotten ugly if we'd gone much longer. BTW, a Google search on
Superlube will net you a supplier that sells it in single tubes. I don't recall
their name, but "Allied" comes to mine. I bought a tube from them last
fall.</FONT></DIV>
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<DIV><FONT size=3>Hope this helps</FONT></DIV>
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<DIV><FONT size=3>Verne Koester</FONT></DIV></FONT></DIV></BODY></HTML>