hello, ive been trying to figure out the best way for me to get power off grid. ive looked at solar panels and dont want to spend 300 dollars and more, and i dont want to haul a gas generator and have to pay 4 dollars per hour of use. as a result ive been here and there all over youtube and the net looking at cool turbines and biomass generators and all that good stuff. then, the idea came to mind, why dont i take a propane tank that i have, hook a copper tube to a turbine and hook that turbine to an electric generator, fill the propane tank with water and put it on a campfire. seems easy and cheap enough. only problem is that i was never the math and science kind of person. so, i found this forum when i was looking up faradays law and how to calculate generator output. what im trying to figure out is if a contraption such as this would even be able to power more than a lightbulb. would i need to get a bigger magnet and coil to increase the generators output? or would i need to increase the coils rpm to accomplish that? i was thinking to use a 5 gallon propane tank and maybe just make a waterwheel type device in an enclosure. that would spin the coil. no clue how big the coil and magnet should be. i need to charge up a 6v 150 amp hour golf cart battery with this thing. so yea, any help would be cool. thanks alot.