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Old Mar 20, 2013, 05:47 PM
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Ed Franz's Avatar
USA, KY, Burlington
Joined Sep 2001
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Some motor help please

Hi there, I need some motor advice/ help for all you out the with a motor/prop/ amp calculator .

I pulled my Plettenberg HP 220/15 A1 P6 with a 7-1 gearbox out of an old 7 cell LMR. I would like to use it in my new 3 meter ALES plane. Can some one give a good starting point prop and amp wise for 2 and 3 cells packs? Maybe even a four cell if that's what it takes.

Thanks,
Ed
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Old Mar 20, 2013, 06:24 PM
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John Lueke's Avatar
Miamisburg OH
Joined Dec 2003
485 Posts
What prop did it use for LMR in the past, and what was the current?
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Old Mar 20, 2013, 06:59 PM
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Ed Franz's Avatar
USA, KY, Burlington
Joined Sep 2001
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Quote:
Originally Posted by John Lueke View Post
What prop did it use for LMR in the past, and what was the current?
It has a 17X10 and I don't remember how may amps it pulled on 7 Nicads. I know that there is a 100amp ESC in it.

Ed
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Old Mar 20, 2013, 07:33 PM
WINS - Winch In Nose Sailplane
jaizon's Avatar
USA, NH
Joined Mar 2008
3,109 Posts
Ed,

Here is a link to the new eCalc. It does list some Plettenberg motors.
http://www.ecalc.ch/motorcalc.htm?ecalc&lang=en

Easy enough to plug in numbers and get results. Worth a try. It's free.

Preston
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Old Mar 20, 2013, 07:51 PM
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jtlsf5's Avatar
United States, CA, Folsom
Joined Jul 2007
2,553 Posts
Ed,
I'd try a 3S 65C battery if you intend to use this for ALES. Then shoot for 125-150 watts per pound for whatever you are going to put it in. This should get you a good climb rate for ALES. If you need more, then 200 watts per pound.

JT
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