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How does $50 sound? Delivered.

I'll have the frame from my 78 available in about two weeks. I'm right up the Northway from you in Mechanicville. No title, but I'm pretty sure I can get one if it's necessary.

I'm really digging your build, man! I did a much less elegant, chain driven Delco alternator mod with my bike. It was hard to find any references for doing it, so I just winged it. I can't wait to see your ride when she's finished. Cheers!

Thanks! It'll do for now.

I love the King tank.

Here's my lil slut.

That would be awesome. When I was putting this together, I could only find a few pics online, and no descriptions of how it all went together.

I used that enormous Delco because it was only $30 and internally regulated. There's direct swap mini alternators that are meant to replace this one. They use the existing mounts in the cars that this alternator is designed for, so if I can make this a viable alternative to the stock charging...

Thanks! That's the kind of info I was looking for when I started this project! I only need the alternator to spin at about 2000 rpm at 45mph. That produces between 20-30 amps which is more than I need for my kick only bike with just ignition and head/tail/brake lights for electrics.

I mounted a sprocket from Tractor Supply to an 11/16 implement hub (the Delco 10si has an 11/16 shaft) that works with that series of sprocket, and attached it in place of the stock pulley and fan. It's a 14 tooth sprocket, and it starts charging at a little under 50 mph. I'm going to drop it to...

No. It's spun by the primary chain. Not ideal, but the whole setup costed about $50, and the only fab was welding the brackets to the frame.

I use a Delco 10si Chevy alternator driven by the chain. I need to go down a couple teeth so it spins faster and charges at lower speeds, but it works.

Here's my 79 with an alternator from a Chevy pickup driven by the chain.

Not a great pic, but this is my 79 rigid. Almost finished. I'm actually switching to spoke as soon as I have the dough.