Car alternator in a bike

[Guythunder]

I have just one question, Why do people put an auto alternator in a motorcycle. what is the reason.?

[Zero999]

I've no idea. It sounds like a bad idea to me.

[Andy Watson]

It performs the same function and (due to the mass production of autos) is probably cheaper.

[HighVoltage]

It was discussed here before about one year ago

https://www.eevblog.com/forum/projects/car-alternators-vs-motorcycle-alternators/

 

[joeqsmith]

I have just one question, Why do people put an auto alternator in a motorcycle. what is the reason.?

Because when we put the car engine in the motorcycle, we need the charging system to go with it! 

[fubar.gr]

Most motorcycle alternators are crap.

On my motorcycle the rated wattage is something like 150 Watts. Due to EU regulations, the lights are always on, that means there's a constant 80-90 Watt consumption.

If I turn on the brights that's an extra 50 watts, the alternator then works at nearly 100% with just a few watts left to charge the battery.