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How many amp will this draw

Old 04-05-2004, 03:42 AM
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tocano
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Default How many amp will this draw

I bought a speed 480 (long can speed 400) and a 3:1 gearbox and 10x7 APC slow flier prop. Can anybody tell me if my 20A esc will be able to handle this. In the past I only use direct drive speed 400 with small prop eg 5x5 with no problem. What happen if the motor draw too much current and burn the esc, will the esc still deliver power to RX and servos?
Old 04-05-2004, 10:10 AM
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Matt Kirsch
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Default RE: How many amp will this draw

That setup will draw nowhere near 20 Amps. Maybe 15, if you use a 10-cell pack.

If you burn out the ESC, it may or may not continue to power the servos. Depends on how hot the fire got, and whether or not it burned out the BEC regulator.
Old 04-05-2004, 07:50 PM
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tocano
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Default RE: How many amp will this draw

Thank you for the information. I use 8 cell 800 mah and 1050 Kan pack.
If in the future I use direct drive with 5x5 prop with my other plane will that still be okay?
Old 04-05-2004, 11:06 PM
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Dr Kiwi
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Default RE: How many amp will this draw

A 7.2v 480 will draw less than 14A on a 6x3 folder so I imagine that with a 5x5 it won't draw more than that.

Cheers, Phil
Old 04-06-2004, 12:04 AM
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tocano
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Default RE: How many amp will this draw

Thanks guys
Old 04-06-2004, 10:50 PM
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JBoss
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Default RE: How many amp will this draw

I run a 480 race with a 2.33:1 gearbox 8 cell kan 950's with a 9*5 I draw 12 amps I run a 8*5 and increase my thrust and performace and lower amps to 10.2 or so. Try using a motor calc lots of them out there

Jim B
Old 04-07-2004, 06:36 AM
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tocano
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Default RE: How many amp will this draw

I'll be using the motor setup for Scorpio Miss Acro plane. It's quite a big plane for speed 400 the wing is 1.38 meter and weight 900 grams. Hopefully I have a good sucess with the setup. I am waiting for the gearbox etc to arrive from Japan (aircraft-world).

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