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Old Nov 11, 2004, 03:20 PM
DON'T KILL THE MESSENGER!
NCQ3's Avatar
Washington DC
Joined Sep 2004
523 Posts
MTM 400F Slow Stick AP? w 400 F gearbox w Nikon 3700?

Anyone tried the MTM blue 400 F outrunner motor with the recomended GWS 400 F drive gearbox and 12x80 prop? with a suppose 34.65 oz of thrust!
They claim MTM 400F Out Runner Brushless Motor 990 g / 34.65 oz Thrust GWS 70T/18T=3.90 (400C) EP-1280 12V 16A ... looks like a good candidate for a 28oz slow stick carrying a nikon 3700. let me know if anyone has used this on a SS for AP and set up. thanks!
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Old Nov 24, 2004, 01:11 AM
DON'T KILL THE MESSENGER!
NCQ3's Avatar
Washington DC
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anybody use this motor for ap?
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Old Nov 24, 2004, 08:27 AM
E-Flight Addict
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Weatherford, Tx.
Joined Oct 2003
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I have this motor in a 28mm Cobri Gearbox geared approx. 3.2:1 turning a GWS 11x7 HD prop on 3 cells lipo for a little over 32 ounces of thrust. I fly a 32 ounce Lazy Bee with it and it will just hover at full throttle ( that is how I know I have at least 32 ounces of thrust) and it pulls 14 amps@10.2 volts. I would think you could do real good with your mentioned set-up. This motor runs really strong and has never given me any problems at all !]

Rick
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Old Dec 08, 2004, 01:24 AM
DON'T KILL THE MESSENGER!
NCQ3's Avatar
Washington DC
Joined Sep 2004
523 Posts
I have tried it and I am impress with the MTM blue 400 F outrunner motor with the recomended GWS 400 F drive gearbox and 12x80 prop! I have not yet flown her with the camera as I just maiden my first flight with this set up. but feels like a good pull on the thrust. flies vertical with no problem. anybody else try this set up?
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Old Dec 08, 2004, 08:06 AM
JustGoFly
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Rochester, NY
Joined Sep 2003
699 Posts
Quote:
Originally Posted by NCQ3
Anyone tried the MTM blue 400 F outrunner motor with the recomended GWS 400 F drive gearbox and 12x80 prop? with a suppose 34.65 oz of thrust!
They claim MTM 400F Out Runner Brushless Motor 990 g / 34.65 oz Thrust GWS 70T/18T=3.90 (400C) EP-1280 12V 16A ... looks like a good candidate for a 28oz slow stick carrying a nikon 3700. let me know if anyone has used this on a SS for AP and set up. thanks!
If you intend to use the MTM 400F outrunner with a 12x8 - please use a 3.9 or larger gearbox. I like the 1500 - 12C LiPo's with this setup. I also prefer the 3.4 gearbox on an 11x7 DD prop.

A 12x8 on a smaller gearbox would probably pull too many amps and could damage the motor and certainly require some very high amp batteries.

Some charts on http://www.JustGoFly.com web site:
400F on 3:1 gearbox:
http://www.justgofly.com/tech400F_3x1.htm

400F on 3.4:1 gearbox:
http://www.justgofly.com/tech400F_3_4x1.htm

400F on 3.9:1 gearbox:
http://www.justgofly.com/tech400F_3_9x1.htm

A video of the 11x7 on a heavy PT-17 with 3:1 (3.4:1 goes easier on the batteries) :
400F running on PT-17 and 1500 Tanic Pack on 11x7

Vinnie
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Last edited by Vindicator!; Dec 08, 2004 at 08:12 AM.
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Old Jan 17, 2005, 07:38 PM
DON'T KILL THE MESSENGER!
NCQ3's Avatar
Washington DC
Joined Sep 2004
523 Posts
UPDATE This Motor Rocks!! Thanks Vindicator! I used a GWS 400F gear box with a 1280 gws prop. great vertical take off on 20 oz planes. Thanks Vindicator! I bought this motor from you on ebay..........
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