# Scooter electro motor

#### thomaspetersen

Joined Jan 29, 2017
3
Hi
I have some questions about electro motors 24V 1000rpm scooter electro motor.
And im new for this theme..

1. If I have two 24V 1000rpm scooter electro motors, and one is wired +=+ and -=- then lets say it will run clockwise, if I then wire the other +=- and -=+ will it then run anti-clockwise ?

2. If running 1000rpm and one is running clockwise and the other anti-clockwise, with 25cm between them - if I then have an object 400gram of weight (a ball), what speed will it shot this object at ? (if we thing something lige this http://jugssports.com/images/products/soccermachine.jpg)

#### Alec_t

Joined Sep 17, 2013
12,201
Welcome to AAC.
1) It would depend on the type of motor. A permanent magnet brushed motor would be reversible as you suggest, but that method won't work for the 3-phase brushless types (which seem to be in the majority). Most scooter drivers don't want reverse drive .
2) Motor shaft (or attached drum/roller) diameter, as well as speed, determines the tangential velocity imparted to the ball. Compressibility of the ball would also be a factor.

If you had the two motors 'facing each other' you wouldn't need to reverse one of them.

Last edited:

Joined Jul 18, 2013
23,620
If it is a BLDC motor that uses sensor feedback for the commutation, they can be reversed by swapping a pair of sensor leads together with the corresponding stator leads, this is usually invisible to the controller.
Max.

#### thomaspetersen

Joined Jan 29, 2017
3
Is it possible to get at BLDC Motor with these spec.
Variable Speed
Maximum developed horsepower 1/4 hp
Volts around 90vDC
Amps 3 amps
Hertz 50/60 Hz

Joined Jul 18, 2013
23,620
Is BLDC a must? You can get DC 1.5hp treadmill motors 90vdc.
The current is dependent on load.
So you may be able to operated around the 3amp mark.
Max.

#### thomaspetersen

Joined Jan 29, 2017
3
Hi MaxCan you recommend an EU seller, with that type off electro motors ?