Data: Made By Thomas Scherrer, June 2004. Speed = 15-17km/h Weight = 77.8kg Total Weight break down: Chassis with motor unit = 32.7kg, Front wheels = 3.4kg, Rear wheels = 7.8kg, Battery = 14.5kg x 2 Seat = 2.8kg, Foot plate = 0.9kg, Steering wheel = 0.4kg, Electronics and cables = 1kg Length = 120cm (including wheels) Width Rear = 66cm Width Front = 60cm Power = 2 x 13.8V 55Ah Lead Acid L2 Car batterys Motor unit with differantial 24V 20-100A depending on load (taken from old wheel-chair) Brake system, electrical magnet system, and electric motor brake Speed control = Pulse width controled computer system (To be defined) The Iron frame is made of 5x1 cm, and bended using brutal force. My drawing made so I could figure out how to make it.. all measurements are in cm. Batteries are lowered to fit under the iron stick. The front wheels mounting will be strong enough for my kids. Lucky me !! the length of the two batteries are exactly the same length inside the two iron sticks. three 10mm bolts are used to mount the rear stuff.. motor and gearbox with differantial is one complete unit. All is homemade using turning lath and welding, the steering stuff are full of ballbarings. One 8mm bolt is fine to secure the front wheels.