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Old Apr 13, 2012, 10:37 AM
jackerbes is offline
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USA, ME, Ellsworth
Joined May 2008
18,096 Posts
Originally Posted by FASTBEN View Post
thanks for the info,but boy its complicated.
my setup at this time on my spider 2.5m is
Hyperion HP-z 3025-10
Hyperion 80a with cool BEC
15x10 aeronut
2x3s 2500 25c GEN ACE in par.
my watt meter shows 1090 watts @ 90 amp
i needed to find out if with changing prop i can keep the amp with about 1200 watts.
Your results are interesting. But I think something might be wrong with your setup. Do you have the batteries in series or in parallel?

You are getting a 90A load with an input of 1090 Watts. Do you happen to know the RPM?

The Aeronaut diagram for the 15 x 10 folder shows that prop using 650W at 6,500 RPM. And the Hyperion test data for your motor on 3S and with a similar sized, but slightly smaller and non-folding prop, as:

APC 158E
3 cells
6270 RPM

I can't understand why you are getting current readings that high, but you are already well over the 65A Max Current rating for that motor and I would think it would be overheating now.

I have used a few folding props, none that large through, and have generally found them to draw similar amounts of current to what would be drawn by a similar sized fixed prop.

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