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Old May 25, 2013, 05:22 PM
Held by Grace
BDOG1's Avatar
Upstate New York
Joined Apr 2006
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Ammo 36-56-1200 inrunner

Has any one experience with the ammo 36-56-1200 inrunner
I am wondering what size prop I would be able to turn with it on5 to 6s without a gear box.
It is rated for 1036 watts max around 50 amps
Thanks
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Old May 26, 2013, 09:00 AM
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Dr Kiwi's Avatar
Chattanooga, Tennessee, United States
Joined May 2003
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Like most GreatPlanes estimates I reckon that rating is way more than the motor can manage.. 283g motor at 3W/g is 850W.... not 1036W.

MotorCalc indicates that an 8x6 might be possible on 5s:

Motor: Great Planes Ammo 36-56-1200 (#5310); 1200rpm/V; 1.2A no-load; 0.034 Ohms.
Battery: Thunder Power TP4400 (G4 ProPower 45C) (45C); 5 cells; 4400mAh @ 3.7V; 0.002 Ohms/cell.
Speed Control: Castle Creations Phoenix 60; 0.0012 Ohms; High rate.
Drive System: Direct; 8x6 (Pconst=1.17; Tconst=1) direct drive.
Airframe: Anything you want.

Motor Amps = 48.3
Motor Volts = 18.0
Input (W) = 867.0
Prop RPM = 19166
Thrust (oz) = 70.3
PSpd (mph) = 108.9
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Old May 26, 2013, 03:08 PM
Held by Grace
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Upstate New York
Joined Apr 2006
271 Posts
Thank You DR Kiwi !
I am considering using it in a giant prop in the slot pusher Jet.
The 8x6 would be a good fit.
Have a Great Holiday
God Bless our Veteran's !
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Old May 28, 2013, 12:43 PM
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You can run it at or above their specified rating, but you need to limit the time. Only a temperature reading will tell you how long it can handle it.
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