I have a plan to connect a Delco diesel 105 amp alternator to my snowblower to double as a 12 volt charger for my survival trailer, its an old 21’ Prowler I bought for $500.
It houses my emergency foods, kerosene heater, propane lanterns, water, cooking tools and cold weather gear.
Now I do have a 12kw Onana diesel genset, it was found a bit dented along the Alaska Highway, I repaired it and it works flawlessly, it uses a bit less than one gallon per hour.
Here is a good website about gensets.
http://www.smokstak.com/forum/forumdisplay.php?s=42287358738d91939fd66f595acaa711&f=6
Nice, and that is some pretty big stuff on that latter.
Here’s a nice site with info on and products for multi-fuel (think propane) conversion for smaller gensets.
http://www.propane-generators.com/