From a bit 'of time now, on our streets is back to whiz half born, even in the early nineteenth century: the scooter. Now this vehicle eco-friendly two-wheeler is "ridden" by modern and skilled skaters who, with a little 'ingenuity, can speed it up, by affixing a motor. In this guide, we will see, precisely, how to build an electric scooter , using a motor operating with lead-acid battery (power of 12 V and a capacity of about 7 Ampere / hour).

Make sure you have at hand:An electric motor with 12 V battery and a capacity of about 7 Ampere / hourA controllerTwo pinions compatible with bicycle chain The chain of a bicycle 1/8 "or 3/32"Electric cables Copper Insulation tapes Stripper manual bolts and washers  WrenchSteel brackets Speed ​​switch (button "on-off")Chain tool for bibiclette Scooter with platform wide, brake handle and wheels with air chamber

First, it must be said that not all can be motorized scooters; to do this, in fact, have to start from a model with brake handle, floor and large wheels with air chamber. Normally, the electric motors are smaller in size but, increasing their power - by positioning, for example, two batteries in series rather than a single 12 V -, it also increases their bulk and weight on the platform, which must have a sufficient space to accommodate the driver. 
The mechanical transmission of our scooter will be constituted by two pinions (two gears) and the chain of a bicycle , which will transmit the engine power to the vehicle. 
locate the first pinion on the axis of transmission of the electric motor and engage the teeth of the wheel end of the bicycle chain.

At this point, you need to change the rear wheel of the scooter, affixing a second pinion, which will be mounted on the other end of the chain. We mount the drive sprocket on the rear axle of our vehicle and, after placing the engine on the platform of the same, make sure that the two pinions are perfectly aligned. In doing this, we must withdraw as much as possible the engine, taking extreme care that the same does not touch the rear wheel.To tighten the best chain, we having to remove some gear. Now we have to weld the machine body to the scooter, or block the electric motor to the platform, with the aid of metal brackets and bolts.