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250W electric scooter


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electric scooter  On this page I'll try to share a little bit of information about electric scooter. The main idea of this scooter was to build it as cheap as possible and employ parts and materials that can be obtained for the cost of asking or a little expense, thus front wheel, front fork, rear sit and rear part of frame are came from old but very solid build kid's bike and cost only $5.00 from recycler, ( wheels are 8 inch diameter).
 
electric motor controller   The controller (Dynamic Controls 110A Rhino controller) is came from a mobility scooter and was donated by mobility scooter repair company for cost of asking,
 
scooter frame   the rear wheel an the 250w motor (permanent magnet "Unite Motors") are the only real scooter parts: were bought from local internet auction for next to nothing as is second hand ones. all wiring, voltmeter, switches and fuses are brand new and obtained from a local electronic shop.
 
 
led batteries  First battery pack was built out of ex security system's discarded batteries, they were sealed lead acid  batteries donated by local security company,
 
 
scooter frame with battery compartment  all frame was designed to accommodate as many of those lead batteries as possible, nikel hydride battery in the frame  the frame made of 1/2 inch square iron tube, it is 700mm long,

 250mm wide and 120mm deep scooter's frame  here is picture that shows the frame layout layout of frame the frame of the scooter is welded all together and spray painted, then sheets of 1.2mm thick stainless steel are riveted to the frame to create body like structure.
 
 Currently there is no lead batteries in this scooter, and instead of heavy lead bricks there are light NI-MH batteries.
 
battery pack  The battery pack is consist out of 288 nickel metal hydride cells ni-mh battery that were used for security mobile radios assembly of the battery pack, the system voltage is 24volts the nickel metal hydride pack in reality is three times lighter and smaller than led acid battery pack  and two times more efficient.

 controls dashboard The control panel includes 30V voltmeter, speed limit switch, main power switch, parking brake switch (there is no need for this switch it is just doubling the main power switch and in reality this number of switches are more like coded lock one just need to know the correct combination to make this scooter go.)

 

This 250W scooter is comfortable enough with 90kg rider and can reach the speed up to 30 km/h on flat terrain, this scooter is perfect test bed for different batteries chemistries and configurations.
250W electric scooter





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