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$35 KA-450H...3200 k/v, 30 amp Outrunner?

Old 12-20-2006, 08:01 PM
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Default $35 KA-450H...3200 k/v, 30 amp Outrunner?

Any of the motor gods care to comment on this motor...

http://www.donsrc.com/cart/index.php...d&productId=12

Don't know a thing about it yet other than it's 3200 k/v and can handle about 30 amps. Didn't really want to stray away from Tower Pro motors but couldn't pass the price a local flyer and seller of these offered me on it. Not even sure what kind of plane it'd be good on yet but would figure it should cook on the Stryker...Read below...36" 20 ounce flying wing at 95mph under 30 amps and the motor doesn't even come down hot! Any experience, info, remarks on the specs welcome. Plane suggestions also welcome. No smack talk.

Here's a little info on it...(Qouting from his website)

Product Information
KA-450H Brushless motor:

Specifications:
KV: 3200 rpm/volt
Current rating: 30 amps continuous
Weight: 69 grams
Battery: 3 cell lipo

This is great motor for its price. KV= 3200 and the ouput shaft is 1/8". Outrunner with 6 magnets and can run 30 amps with no problem. I currently fly this on a 36" span flying wing (20 ounce AUW) on a 4.75 x 4.75 APC prop and a 3 cell 2100 Lipo pack and it hauls it around at 95 mph. Motor is barely warm to the touch after 5 minutes of WOT running (unloads to about 26-28 amps in the air). More info to come! Includes extra shaft as shown in the photo.

KV= 3200


Price: $34.00

(End Quotes)
Old 12-21-2006, 01:41 PM
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Default RE: KA-450H...Any Experience With It?

Dug up a little more info on this new motor. All this is based on a 3 cell lipo and no gearbox with an average of 10V input...

4.75x4.75 APC E...Projected around 95mph and unloads to roughly 26-28 amps in the air...

4.5x4.1 APC E...390 grams of thrust (13.75 ounces), 24500 RPM, 22.1 amps, 221 watts, 1.8 thrust g/w, 95.1 MPH pitch speed...

I'll probably try both of these prop sizes. There are others on the chart but my limiting factor is a 30 amp ESC. Should have no problem powering it with a 20C 2200ma 3 cell lipo. And, check out this one I might try...

4.75x5.5 APC E on a 3 cell...371 grams of thrust (12.75 ounces), 20940 RPM, 20.9 amps, 209 watts, 1.7 thrust g/w, 109.1 MPH pitch speed...

Truth be known this motor is kind'a scaring me. Never wanted to go as fast as possible at any cost but now, since there isn't much "cost" for this motor, I may have to try it on the Stryker to compare to the 12T. Then again, I may throw it on a homemade foamie jet of some sort. From what I've read thus far it also appears to be a very versatile motor that can handle a large window of speeds and torque by using direct drive or a gearbox. One direct drive chart portion lists over 30 ounces of thrust at 69mph with a 5.7x3 APC E prop at an amp draw of roughly 25.3 amps. Some guys are even using it on TRex choppers with great results.

Since I'm not an expert on brushless motors by any means I'd still like to hear some feedback from those who are more in the know. How do you think it compares to the Mega and other "high end" motors out there?


Old 12-22-2006, 03:17 PM
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Default RE: KA-450H...Any Experience With It?

This motor appears to be a JustGoFly 450TH clone. Still having trouble finding anything out about it since it's so new. However, I've been using the JustGoFly website's 450TH page as a useful reference to the motor's performance. Many prop sizes, charts, reviews, etc on there.
Old 12-27-2006, 09:23 PM
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Default RE: KA-450H...Any Experience With It?

Got the motor today. The initial quality impression is good. It's much smaller than I thought it would be. The winds look clean and uniform. The casing also looks of good quality. Can't wait to try it out.
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Old 01-04-2007, 09:39 AM
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Default RE: $35 KA-450H...3200 k/v, 30 amp Outrunner?

Found this info on BP's site. Looks like the same "clone" motor, though off hand the k/v is listed slightly lower than mine...

Kv: 2900 RPM/V
No Load Current: -
Resistance: -
Max Voltage: 11.1V
Max Current: 29A
Max Watts: 300W
Weight: 55 grams
Size: 28mm Dia.
Shaft Diameter: 3.2mm
Poles: -

Configuration: Propeller: Voltage: Amps: Rpm: Thrust:
Direct Drive APC 4.1 x 4.1 11.0V 21.5A 27400 14 oz
Direct Drive APC 4.5 x 4.1 11.0V 26A 25000 15 oz
Direct Drive APC 5.7 x 3 11.0V 29.5A 24000 29 oz
3:1 Gearbox APC 9 x 6 11.0V 22.3A 10000 33 oz
3:1 Gearbox GWS 10 x 6 HD 11.0V 24.5A 9150 40 oz


Use 3 cell Li-Poly

29A Limit

2900KV

Weight: 55g

Shaft Diameter: 3.2mm

Motor Diamter: 28mm

Hole Spacing: 16.5mm / 19.5mm

Comes with motor mounting screws



Old 01-06-2007, 11:17 AM
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Default RE: $35 KA-450H...3200 k/v, 30 amp Outrunner?

Anybody interested in this motor, the 450TH, or similar "clones" should follow this link and all other links that spread from it. Very good reading and data...

http://www.rcgroups.com/forums/showt...22#post6679783

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