How to determine a motor true output/capability

[Jesuscookies]

Hello all. I have been lurking on here for a while, completely intimidated by how damn smart you all are, so go easy on me if my questions sound foolish. I am just a lay person
I am researching the build of an electric stand up hub motor scooter and need some help.
Can someone help me understand how to determine a motors true rating? There seems to be quite a bit of inconsistency in the way hub motors are rated?
I am trying to convert a stand up kick scooter with 12 inch wheels (12.5/ 2.125) over to a hub drive electric. I figure I will need at least 1000 watts, but would prefer 1500 watts to get my ass up and over the hill that I live on (12% grade). However, in my search all I have been able to come up with is 500 watts max. I don’t think that small of a motor is worth the time.
How can I truly tell what the motor is capable of, aside from the advertised rating? Is there a brand to look out for maybe?
Does anyone know of a decent semi lightweight hub motor that I can use at 1500 watts fitting a 12 inch wheel?

 

[MagiicHat]

I'm not one of these geniuses, but here's my take on the situation:

You are in sort of a grey area between bikes and larger motors, which are rated in watts, and smaller things like scooters and skateboards which are using car/plane hobby type motors which are rated in 'kv' - which really isn't that useful of a value (it's the RPMs per phase per volt). Usually they don't have a power rating, but just a max voltage (which is really more of just a suggestion).

I don't have much advice on where to look, as I am focusing more on the skateboard end of things. Good luck mate!

 

[spinningmagnets]

Most RC motors are outrunners, and the hot stator is attached to an aluminum baseplate. Attach a temperature probe with a digital readout. Don't let it get over 200F/93C. If it is getting too hot under your loads, you need to either:

a) Raise the volts so you can get the same power with less "heat producing" amps

b) upgrade to a larger motor

c) Add an airfan, like helicopter motors, or liquid cooling, like the boat motors.

 

[DAND214]

Hello all. I have been lurking on here for a while, completely intimidated by how damn smart you all are, so go easy on me if my questions sound foolish. I am just a lay person
I am researching the build of an electric stand up hub motor scooter and need some help.
Can someone help me understand how to determine a motors true rating? There seems to be quite a bit of inconsistency in the way hub motors are rated?
I am trying to convert a stand up kick scooter with 12 inch wheels (12.5/ 2.125) over to a hub drive electric. I figure I will need at least 1000 watts, but would prefer 1500 watts to get my ass up and over the hill that I live on (12% grade). However, in my search all I have been able to come up with is 500 watts max. I don’t think that small of a motor is worth the time.
How can I truly tell what the motor is capable of, aside from the advertised rating? Is there a brand to look out for maybe?
Does anyone know of a decent semi lightweight hub motor that I can use at 1500 watts fitting a 12 inch wheel?

https://www.alibaba.com/product-det...60461217874.html?spm=a2700.7724857.0.0.xEKpGQ

Almost all hub motors can handle 1500w.

Dan

 

[Jesuscookies]

Most RC motors are outrunners, and the hot stator is attached to an aluminum baseplate. Attach a temperature probe with a digital readout. Don't let it get over 200F/93C. If it is getting too hot under your loads, you need to either:

a) Raise the volts so you can get the same power with less "heat producing" amps

b) upgrade to a larger motor

c) Add an airfan, like helicopter motors, or liquid cooling, like the boat motors.

Interesting, so if i can keep things from melting at a given wattage I'm good, even if the motor is advertised at a lower power output.

By the way, thanks for all the information you have posted on the net and here. I have read a bunch of your stuff/instructables. Very informative for a noob