My idea to make an electric push trailer was to make something economical and functional. The idea is to use it as a peddle assist more then a motorized bike. My girlfriend lives on a massive hill out of town, and I'm a big guy (over 300lbs)... So simply peddling up the hills would be extremely difficult. With the assist of the silent electrical motor, I think I would use my bike alot more, which will help me get back into shape. Anyways, The idea is to use either a 500 or 600 watt electrical motor, and 4 12v 12ah batteries wired to create a 24volt 24ah reserve. Unlike most electrical bikes, I had planned on using an external electrical motor as apposed to the hub style motor. The main reason I chose to do this is cost, and keeping the back wheel around 12inches.
All in all, I think I could build this for less then $300... The batteries are $93 shipped... the motor will be around $60 shipped... Then I would need a thumb throttle, and control unit... which is about $75. Plus scrap metal I can get for free to create the frame.
Below I created some 3D pictures on a basic autocad program which shows basically what it would look like. The 4 batteries are in grey, the motor is in gold, and there is a simple chain that would attaching the motor to the black gear which is attached to the rear wheel. Ideally, above the batteries and motor your could tie down anything such as camping equipment, a basket, or a cooler.
Lastly, if you click HERE you can see what gave me the idea, I wanted something a little smaller, that I can make myself, without being a hub style motor, that would be less then $300... Let me know your thoughts folks... Thanks!
All in all, I think I could build this for less then $300... The batteries are $93 shipped... the motor will be around $60 shipped... Then I would need a thumb throttle, and control unit... which is about $75. Plus scrap metal I can get for free to create the frame.
Below I created some 3D pictures on a basic autocad program which shows basically what it would look like. The 4 batteries are in grey, the motor is in gold, and there is a simple chain that would attaching the motor to the black gear which is attached to the rear wheel. Ideally, above the batteries and motor your could tie down anything such as camping equipment, a basket, or a cooler.
Lastly, if you click HERE you can see what gave me the idea, I wanted something a little smaller, that I can make myself, without being a hub style motor, that would be less then $300... Let me know your thoughts folks... Thanks!