I'm working on building a teardrop for various camping situations and trying to come up with a suitable water/shower system. It will be used for 2-3 day trips and some will be at established campgrounds with facilities so the shower won't always be needed. I'm trying to keep it simple, light, and cheap. I'm thinking of this mounted on the tongue, easy complete system to take on and off. The sprayer wand could be shortened for washing dishes and a quick connect fitting added for attaching the shower.
http://t.harborfreight.com/12-volt-15-g ... 61263.html
I will be running a standard Coleman propane stove for cooking, and was thinking about using a heat exchanger that would sit on top of it for a shower. I have a couple of old dirt bike radiators that may work with a ball valve to control the flow/temperature. Basically you would have to connect the exchanger/shower, set it on the stove and get it hot, then open the ball valve until it flowed through to get the temperature you desire. Faster flow, more water, faster, cooler. Slower flow, less water, more slowly, hotter. You couldn't shut it on and off during use or it could scald you, but that's ok. Sound concept or is there a reason it wouldn't work?