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FrozenGate by Avery

World smallest QUADCOPTER for Promotion Price

Sig -- 10 KW ?? How is that measured? I've seen that
before and 10 KW in that motor package is smoke.
HMike
 





The hobbyists don't appear to follow the law,
OHM'S that is or the power law either.
10 KW is a bunch of AMPS even at 44 VDC.
HMike
 
The V222 is the before-rebranding model of the one Jaycar has, I have a few of them and they're great learner quads. I've crashed the sh!t out of them and they keep going.
 
Hemlock_Mike said:
The hobbyists don't appear to follow the law,
OHM'S that is or the power law either.
10 KW is a bunch of AMPS even at 44 VDC.
HMike
Click to expand...

Not really - it's 250 AMPs.

Well, I mean that IS a lot of amps, but it makes sense to me.
 
RHD ---
I still have a lot to learn but --- 250 AMPS into that little
motor for minutes at a time??? There are on demand 10 KW
water heaters which draw that power and are water cooled......
Please enlighten me -- someone.
HMike
 
Brushless motors can handle very high powers because they don't have any brushes to wear away, so you can just wind them with very thick wire and shove as much power through them as you want .. BUT they can't run at that power constantly.

Most of the time, the motor is stuck directly under a propeller, so it has an abundance of forced air cooling, but even running at 1/2 power, it's gonna get very hot.

I have a 2.7kW brushless motor in my modded electric scooter. It has grunt, a lot of it, but minimal cooling, it overheats very quickly if you're stopping and starting.

Brushless motors are almost opposite of regular brushed motors. In a brushless motor, the majority of their torque is at higher speed, whereas a brushed motor is the opposite.
 
Things -- That makes some sense but that current in a small package
is insane. Cooling from a prop, especially near the hub is minimal.
Thrust comes from the outer part of the blade. That's why I never blew
the cowling off my old Piper PA-20 !!!!!

Maybe we are dealing with a 180 HP car uses only 25 HP going down
the road. Peak power is only for a couple seconds.
HMike
 
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You're not wrong there Mike, but there's a few other things that make brushless motors superior. For most applications outrunners are used, where basically the coils are fixed in the middle of the motor, and the magnets are mounted around the outer bell. Doing this gives you more torque because you have a larger rotating area vs an inrunner. It also means the coils can be somewhat heatsinked through the front/back of the motor.

But yes, while they are capable of handling 10kW, they won't run at that for any real amount of time without melting.
 
Things --
It seems to me that attempting to push 250 AMPS through even #12 wire for more than a couple seconds would equal SMOKE. Can those switching drivers really handle that much current?
I have 100 Amp service to my house and it's bigger than #10 wire. I know they are switched but what is the average power / current?
HMike
 
Last edited:
OK -- Forget the current for now.......
10 KWatts = ~ 9 Horse power if I if I recall.
That much power in that motor housing,
mounting and shaft????? Forget about the
prop and cavitation..........
HMike
 
Sig --- Outputting near 9 HP on a small
shaft to a small prop is ... well .. amazing.
HMike
 
They are pretty insane, the 2.7kW motor I put in my scooter looks no where near that.

DSCF7209.jpg


Guess which one is 250W and which is 2700W? :)
 
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