Feigao motor

[Fluid]

What the motor makers says and what the motor will do are two different things. In this case the 8XL will handle more than 83 amps, although I doubt that your cells will for much longer than 2-3 minutes based on what some of our club members have done with their Feigao 8XLs. In spikes and for short duration acceleration it will handle well over 100 amps. It all depends on how big of a prop you use and how wet the boat runs.


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[ED66677]

That's good news then! :D

I though my motor was smoked!
But this really can't be, my ESC is an 80amps Mystery, so even if it can support 90amps, as some guys said, that's just above the 83max amp given by Feigao for the 8xl!

Thanks for these info guys, that is something I was not even guessing or suspecting!

[Fluid]

No, not strange at all. Even brushed 05 car motors get hot running without load - virtually all that power is turned directly into heat. Look at the efficiency curves for BL motors sometime - high performance motors like some of the Neus are most efficient at over 200 amps!

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[ED66677]

That's exactly what I got too, dead hot in one minute run!
Strange?

[Steven Vaccaro]

I havent uses a Eagle tree or measured the current, but with no load they run very inefficiently. I bench test things to test for binding and alignment and when I do I notice they get hot very quickly.

[ED66677]

Hi all,
I've got an 8XL running under 12 cells on this
I just received my Eagle Tree ordered at OSE and started to make bench test to see how this beautyfull thing works.
I did measure volts and amp at no load on my 8XL and, holly cow!... 12 amps at no load and prop shaft not connected!???
Should be around 3 isn't it?
So I took my ampmeter and confirmed 12 amps!
Is this somehow normal? Are given datas depending on operating voltage? I guess yes but how many volt then?
Does anybody running a 7, 8 or 9 xl could confirm what I've seen?