Many of us, seeing electric scooters, bicycles or scooters passing through the city, turn around with envy. Still, to use your favorite vehicle with a minimum of effort is everyone's dream. It's just that they are quite expensive. This is where the thought arises: is it possible to convert your bike into an electric one?
A necessary element for the conversion is a brushless DC motor (BLDC), but its price in the market is quite high. In our article we will tell you how to make such a motor from a generator with your own hands. This will significantly reduce the cost of altering the bike. After all, a used generator in good condition can be bought inexpensively at any car disassembly.
Content:
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Materials for work
To make generator motor, you will need:
- old car generator;
- pliers, a set of keys and screwdrivers;
- speed controller;
- soldering iron;
- wires;
- two 6V batteries;
- multimeter;
- bearings (if necessary, replace them).
Step 1. Disassemble the car generator
Unscrew the four long bolts connecting the generator.
Disconnect the voltage regulator (relay-regulator assembly with brushes) and remove it.
Holding the pulley, unscrew the fastening nut and remove it.
We remove all washers, the impeller and take out the key.
Remove the front cover, take out the rotor with the collector and bearings.
Source: https://youtu.be/y3qCx2JCIeo
We unscrew the stator from the back cover and the rectifier unit and take it out.
Disconnect and remove the rectifier unit (diode bridge).
Source: https://youtu.be/y3qCx2JCIeo
We clean and connect the conclusions of the stator windings into a “triangle”.
We tin them and solder wires to them.
We disconnect the two contacts of the relay-regulator from the brushes and also solder the wires to them.
Step 2. We assemble the motor
We connect the stator wires into a bundle and insert it into the back cover.
We put the rotor with the collector and bearings in place, put on the front cover and tighten everything with long bolts.
We attach the brush block in place.
We put the key in place, put on the impeller, washers and pulley and tighten everything with a nut.
Step 3. Testing
We connect the leads from the motor brushes to one battery, and the leads from the stator, through the speed controller, to another.
As a result, we got a BLDC motor with the ability to adjust the speed from an old car generator.
Source: https://youtu.be/y3qCx2JCIeo
How to make a motor from a car generator
Do-it-yourself motor from a generator | Making an electric motor
