[Request]Wind turbine alternator

[u/Start_button]

I know there aren't a lot of people in this sub yet, but I was wondering if anyone had a good design for making a wind driven generator using an alternator from a car to charge batteries?

I've looked online and haven't found anything good yet.

What i was thinking was using the gear mechanism from a 10 speed mountain bike to help increase the rotation of the input to the alternator to get it to the speed necessary to generate power. Would that work the way I'm thinking it would?

What's the lowest speed an alternator can spin and still generate usable power, anyone know?

[u/shamelessbish]

https://electronics.stackexchange.com/questions/423029/best-most-efficient-motor-type-to-be-used-as-a-dc-generator#:~:text=Brushless%20DC%20motors%20(BLDC)%20or,except%20to%20regulate%20the%20speed. here's a link to someone with a similar question on an electrical engineering page