[Functional Artist]

First a System Check

https://www.youtube.com/watch?v=IWsCoyaSRdU

& then, before the first test ride, I put 'er up on blocks & attached a digital RPM meter to get an idea of what kinda RPM's this motor can produce.
(It's not really an "unloaded" test as the motor is "motivating" the chain, sprocket, axle, bearings & wheels)

I recorded the test
...& even used a tri-pod.

https://www.youtube.com/watch?v=Hz5Mo5TFuTI

* Here are the numbers that I got

Low speed 375 x 5.4 = 2,025 RPM's
Med speed 732 x 5.4 = 3,952 RPM's
High speed 1,200 x 5.4 = 6,480 RPM's

 

[Functional Artist]

I must say, this thing "flies"
...according to my GPS the top speed seems to be ~35MPH

I had a "self-inflicted" equipment failure
...because the (3) power wires, to the motor, get hotter than I anticipated.

Here is a "ride along" type video

https://www.youtube.com/watch?v=SOEculQeTtk

 

[dain254]

I have seen these motors and similar on eBay - I was wondering if they had decent power or not - and overheat easily. I converted a KTM 50Sr for my daughter to electric and am only running 24V, so it is a nice speed for her but I imagine she will want to go faster later.