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Apr 01, 2002, 09:33 PM
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3ED Gearbox


What kind is the GB that gary used and where do you get it.
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Apr 01, 2002, 09:35 PM
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Jeff Meyers's Avatar
It's the Great Planes GD-600. He sells them.

Apr 01, 2002, 09:47 PM
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Thanks Jeff

Do you think that combo would work in a LT-25 on ten cells.I am flying mine on a Mag Meyhem but it is a little slow to climb decent.
I figure if it will make a 3ED fly that good, a LT 25 would not be too bad.
Apr 01, 2002, 09:56 PM
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Jeff Meyers's Avatar
I assume you are talking about the Endoplasma with the 4.6:1 ratio on 10 cells.

Should be nice....just can't run full throttle full flight. The com and brushes won't last long with extended WOT.

What prop and gear ratio are you currently using?

What's your current all up weight?
Apr 01, 2002, 10:06 PM
Registered User

I am running a Master Airscrew 12/8 E-prop
3/1 GB ratio.

17 amps at WOT(not enough I know)
5.5 pounds

Apr 01, 2002, 10:17 PM
He wasn't always evil
AirVenture's Avatar
pbrokaw, nice to see a flyer from Wisconsin. I'm about an hour and a half soutwest of you near Platteville. Where do fly out of? What kinds of planes?

Apr 01, 2002, 11:13 PM
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Jeff Meyers's Avatar
I assume you are not on 10 cells right now. That would put your system in the high 20's WOT.

According to the calcs...you will get about a 35 degree climbout with a 10 cell endo / 4.6:1 box.

Or you could gear it higher with an MEC box and swing a larger prop at the expense of pitch speed.

Also...try the APC E series props...less current than the MA Electrics.
Apr 01, 2002, 11:51 PM
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Send me a e-mail:


I call Muscoda Home on the weekends!(40 mins from you)

Apr 01, 2002, 11:53 PM
Registered User

Yes,I am running ten cells,there must be something wrong with my set-up.I think it is the ESC(Dymond D50)