Inside the left engine cover.
This type of curved beam motorcycle generator consists of a stator coil and a rotor magnet. The stator coil is installed on the magneto cover and the rotor is installed on the left end of the crankshaft.
Engine speed is high, generally above 5,000 rpm. The power per liter (effective power output per liter of engine displacement) is large, generally around 60 kilowatts/liter, which shows that the motorcycle engine is very reinforced and the engine displacement is small.
In order to ensure engine cooling at low vehicle speeds and before starting, high-power motorcycle engines adopt a forced air cooling method that installs fans and air ducts and uses forced air to blow the cooling fins.
Detailed information:
The armature reaction magnetic field and the excitation magnetic field of the synchronous generator rotor can be approximately considered to be distributed according to the sinusoidal law. The spatial phase difference between them depends on the temporal phase difference between the no-load electromotive force E0 and the armature current I. The armature reaction magnetic field is also related to the charge state. When the generator load is inductive, the armature reaction magnetic field acts as a demagnetizer, which will cause the generator voltage to decrease; when the load is capacitive, the magnetic field of reactionarmature ion acts as a magnetizer, which will reduce the generator voltage; the generator output voltage increases.
Baidu Encyclopedia - Generator
To modify the automatic start of a gasoline generator, the first condition is to see if there are gear teeth on the side of the steering wheel. If there is, the tooth must be matched to the same starter and gear as the tooth, and the starter mounting frame must also be considered. After installing them, think about the battery and start switch etc. You can change it. however you want, provided you are willing to spend money.