Greets!
The Yard Mule uses a 20,000 watt motor!
A 2000 watt motor would be good for a fast electric bike or scooter.
If you can discuss your design goals a bit more, I can help find you some sources.
Here is a bit of text from the Yard Mule plan I am currently writing...
Electric Motors and Controllers
Everything about an electric drive appeals to me over a petrol engine with the exception of cost. A good electric motor and controller will certainly cost you $1000 or more, plus the $500 cost of a pair of large deep cycle batteries. Having said that, my design goals included not paying $10,000 for an ATV, as well not making a lot of noise, so an electric drive fits this bill perfectly.
Electric motors are typically rated in watts, but as a comparison, 750 watts is equal to one horsepower, so you will want an electric motor capable of at least 3000 watts, or beyond 10,000 watts for some serious hauling capacity. The motor shown in the photo is a PMG-132 permanent magnet DC motor, and will happily put out 4 HP all day, with short burst of up to 20 HP for a few minutes at a time. At 24 volts (2 batteries), the shaft rotational speed of this motor will reach around 1700 RPM. I paid $1000 for this motor, and it is very well built.
When looking for an electric motor, a good source will be online companies that sell parts for converting gas vehicles into electric. Many of these companies will offer motor and controller combinations and all of the wiring you require, so you can get up and running easily. Take some time to research these amazing online sources of information and get familiar with the options available. You will be looking for the same size range of motor that many are using to convert motorcycles into electric vehicles.
Earlier in this plan, I discussed my motor controller, which is the small blue box that takes battery power and sends it to the motor based on the throttle position. Mine is an Alltrax MPX-4834 golf cart controller and is capable of 300 amps continuous with 400 amps peak. The simple rule is to get a controller that is larger (in amps) than the total capacity of your motor.
You do not have to be an electronics expert to wire a motor controller, as it has very few connections, usually just battery input, motor output, and throttle.
Here is the label on my PMG-132 motor...
Brad