Your attention will be offered to two designs of the simplest homemade gasoline generator, made on the basis of an engine from a trimmer and a car generator. The power of such an installation can vary from 1 to 2 kW. It all depends on the power of the engine and the power of the car generator. The output voltage is 12 V, but no one forbids connecting an inverter and increasing the voltage to 220 V.
In general, such a homemade product is available to everyone, since the engine from a trimmer may well be lying around in your workshop, and finding a car generator is not a problem at all.
Will need
- Gasoline engine from trimmer. It is advisable to use a 4-stroke, of course, but a 2-stroke will do just fine.
- Working car generator. It already has a built-in control system for stabilizing the output voltage.
- 12 V battery. Not necessarily large and powerful, it will only be used for starting. Without it, the generator will not produce electric current, since the initial voltage must be applied to the collector for primary excitation.
Option 1: Direct Drive Gasoline Generator
Its design is simple and uncomplicated, as you can see. The only difficult step will be preparing the shaft of the drill chuck.
In order: the shaft is cut, sharpened on a lathe, and threaded to fit the chuck.
Next, the cartridge is screwed into which the electric generator shaft is clamped.
Next, everything is fixed on a wooden stand. The difficulty is to secure all the units well, so that their axes are in the same plane, so that the runout during rotation is minimal.
We start the gasoline engine and connect the generator to the battery. We check its operation with a voltmeter and a light bulb.
Watch the video of work
Option 2: petrol generator with belt drive
Very similar to the first one, only a belt is used to transmit rotation. A pulley is attached to the trimmer shaft, and everything is connected with a belt.
We fix everything on a wooden base.
We start the trimmer and also check the operation.
Watch a video of the generator working
Application
In winter, such a generator will be a godsend for those who have a weak car battery. You can easily carry such an installation with you in the trunk; it will not take up much space.
But in general, the generator can be used in a variety of ways. As mentioned earlier: you can connect a powerful inverter and power any 220 V load, including power tools.
