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Re: Using an old car alternator to generate electricity...

Posted: Nov 21 2017 7:02pm
by RebelRider.Mike
I made a video of my alternator tear-down. Not gonna be a cinematographer any time soon, but here it is.

Re: Using an old car alternator to generate electricity...

Posted: Nov 21 2017 8:34pm
by billvon
RebelRider.Mike wrote:
Nov 14 2017 9:54pm
If I pursue the project further, I'll add an On/Off switch, variable resistor (for the field coil) and a V/A meter to the handlebar. A nicer looking platform with a battery mount would be good too. :)
Recommendation - keep field as low current as possible (more efficient) and use the bike's gearing to get appropriate voltage out.

Re: Using an old car alternator to generate electricity...

Posted: Dec 13 2017 5:23pm
by markz
You should hook the alternator up to a bicycle wheel on an ebike and see what your returns are, if you have an inverter then all you'd need is 120Vac and 4A output, so 500W inverter, and a digital multi meter to see what the net loss is.

Re: Using an old car alternator to generate electricity...

Posted: Dec 27 2017 11:59am
by RebelRider.Mike
Thanks for the suggestions!

I've made no progress on the "power bike" since my last post. My old car's carburetor bit the dust and I'm elbow deep in rebuilding it at the moment. But I did finally finish edditing the second video I made reassembling the alternator.


I hope to make at least one more to show the final (or working) product.

Re: Using an old car alternator to generate electricity...

Posted: Feb 28 2019 3:07am
by ACDC_comeback
A power inverter is definitely the way to go. I built my own generator with an 8hp engine, a 180 amp 12v truck alternator, and a 3000w inverter. I also have a deep cycle battery so I can use some power when the engine isn't running, and I have electric start with a remote. Best generator ever! It will surge 6,000w for 5 seconds, which is WAY more than a 3kw standard generator can surge. I can also use it to jump start/recharge anything 12v.

I did, however, spend a ton of money to build this thing. I could have bought a generator off the shelf for cheaper...but I like mine better.

Re: Using an old car alternator to generate electricity...

Posted: Feb 28 2019 3:35am
by amberwolf
Wierd; it can do all that but can't charge a dead battery?

https://endless-sphere.com/forums/viewt ... 14&t=98937