Looking for used 12v generator

[dtv5403]

I am working on a custom motorized bicycle project, and the state I live in (Florida) requires front and rear lights for operation on roadways. I figured what better way to make a reliable system than to use a 12v battery and add a charging source. I have all the lights I want to use, a small battery and rectifier, etc. I would like to mount a 12v tractor generator and either run it friction drive off the rear wheel, or chain driven off my secondary drive chain. Which way I run it depends on the size and shape of the generator, as well as where I decide to mount it. So if anyone has a used generator that works, maybe off a junked tractor or just sitting in a spare parts bin somewhere that they arent going to use, feel free to pm me and let me know what you would like for it. Shipping would be to 32605. I suppose the brand/make/model doesnt matter much, but the two brands I have seen on ebay are ford and kubota. But if anyone has another brand, I'd still be interested, just pm me and I will provide my email address so that you can send pics. Thank you much!

 

[Leejohn]

Just google bicycle generator for lights

 

[dtv5403]

One, they don't produce enough amps, actually only about half an amp. My system is led and will consume as little as possible, but still more than half an amp. A tractor generator will produce 20-50 amps depending on the exact type. Secondly, I've used the tire generators on a previous build. Gone through three of them in less than a year, and at $20 a pop, running lights was getting very expensive. They simply are not designed to stand up to 30 MPH. They are wound to produce 12v at about 12-15 MPH. A tractor generator will handle the speeds that a 79cc 3hp engine produces. So I am here seeking to find out if anyone has a used generator they will sell me for a reasonable price. If no one wants to sell me a used one, there are some available on eBay, however the cheapest I have found is $70 and they go up from there. So you can hopefully understand my desire to find a used one. I am here chiefly for this reason, and no other. Thank you.

 

[Baby Grand]

How about one of these:
Alternator Kubota Tractor G2000 G3200 G4200 G5200 G5200 BX1500 BX1800 BX22 BX23 | eBay
With free shipping it's at a reasonable price.
It weighs next to nothing and should produce enough power for a whole-lotta light.
Or maybe this guy will part with the unit from his G5200:
http://www.tractorbynet.com/forums/kubota-lawn-garden/335988-g5200-i-have-bunch-parts.html

 

[dtv5403]

I did some more searching on eBay, and I found some allis-chalmers generic alternators (I say generic because they fit a lot of different tractors from a lot of different years) for $57 with free 4 day shipping, and they are brand new so that's a great price, especially because they are 60 amp. I doubt the money I'd save on a used one would be worth it when I can get a brand new one for that price.

 

[DT86]

How long (hours) do you ride before returning home?

 

[Sodo]

A 4 amp-hour battery will run 1/2Amp load for 8 hours.

 

[dtv5403]

I've already decided to go with the alternator I found on eBay for $57. Thanks anyway.