Electric Motorcycle – KZ440
If you are interested in building your own electric motorcycle, you have come to the right place! I’m working on posting all the information on how I built my own electric motorcycle to share with your. If you are ready to jump right in to building your own, please check out my BUILD YOUR OWN ELECTRIC MOTORCYCLE instructional DVD set!
Here’s a teaser video to get you going.
To see all my electric motorcycle videos on YouTube, CLICK HERE.
For “Chapters” of how I built the cycle, please see the links on the sidebar, or click the links below. I’m currently going through and adding in all the details to this project. Don’t worry if all the detailed info isn’t there yet, I’m going to keep adding to it!
(June 20, 2011 update) I have recently done some work on the cycle – cleaning it up, adding some fresh paint, and welding up a new battery rack that tucks the batteries more neatly into the frame.
The cycle uses a single-speed gear reduction. 14 tooth on the drive sprocket, and 72 tooth on the rear wheel sprocket. This low gearing was designed to give the bike good acceleration, with a top speed of 45 mph, the top speed limit in the area that I use the cycle in. (I mostly use it in the city, where it’s all 25 mph zones.)
The Briggs & Stratton Etek motor is rated at 150 amps continuous, and rates as a 8 – 12 HP motor, depending on voltage. With my 300 amp controller, and 48V of batteries, that comes to about 20 HP peak, which you get INSTANTLY from an electric motor. If I swapped out the inexpensive drive sprocket ($10 at the Farm & Fleet store) I could probably go 60 or 65 mph and still be within the amperage rating of the motor, although I wouldn’t have as good acceleration.
The cycle goes 20-30 miles per charge, depending on speed, weather, hills, etc. on 4 Optima Yellow-Top batteries. It charges overnight with a built-in 48V charger.
Here’s a video of my friend testing the cycle in the parking lot after updating some work on it.