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Old Sep 21, 2012, 09:48 PM
Registered User
United States, WI, Fond du Lac
Joined Sep 2011
607 Posts
Discussion
Help needed

Hi all

I am looking looking to replace this motor HK2445-3200 that I have in my small version of the Het Tucano. Its a car motor I know. Im running a 36amp thundrbird esc with a 1300 3s lipo biggest battery i can fit. 4.5x4.1 prop. The motor gets tired really fast I actuall had two of them and the first one lasted about 15 flightsand performance was way down.I was pulling 338w,34 amps and dont remember volts. I know that Im over amping it by almost double now that I put it on a meter. Im thinking a Mega 16/15/3 would be a good fit but thats a little pricey for me. Anything comparale to that?

Thanks
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Old Sep 22, 2012, 04:06 AM
We want... Information!
Bruce Abbott's Avatar
Hastings, New Zealand
Joined Jan 2001
5,182 Posts
Het 3W

ARC 28-37-2.5

Himax HB2816-3000
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Old Sep 22, 2012, 12:25 PM
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United States, WI, Fond du Lac
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The HET looks like a good one as far as amps and watts. I just wonder with the 1350 battery will I be getting the same performance speed wise that I have now or better. I like to go fast.
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Old Sep 22, 2012, 03:10 PM
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Bruce Abbott's Avatar
Hastings, New Zealand
Joined Jan 2001
5,182 Posts
Due to the lower Kv you may need to run a slightly larger prop, eg. 4.7x4.25. With this prop my motor got 374W and 109mph static pitch speed. YMMV.

Quote:
I was pulling 338w,34 amps and dont remember volts.
338W / 34A = 9.94 Volts. If this is correct then your battery may be the limiting factor. To handle 34A a 1350mA battery should be rated for at least 25C continuous, but 40C+ would be preferable.
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Old Sep 22, 2012, 04:09 PM
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United States, WI, Fond du Lac
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So what's your estimate on air speed then?
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Old Nov 23, 2012, 01:27 AM
Fast? I got something 4 ya!
XtremeWingRC's Avatar
United States, WI, Oak Creek
Joined Oct 2007
2,495 Posts
I've used het motors all the time.

On a 3w 3000kv 4.1 pitch

On 3s I guess

Pitch speed is 129mph - drag

So 100 mph plane is my guess or maybe a little more.

Get a radar gun!!!!
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