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Wanted - plans or ideas... Answered

Greetings Geniuses (Geniei?) I have already scanned the site and youtube but I was wondering if anyone either has or could create plans to build a motorized (gas engine for ease I am thinking) cooler? Any links, help or suggestions most welcome....





5 years ago


We recently bought our first travel trailer to help with a long move. It has a fridge/freezer that runs on 120VAC or propane. Newer models also can run on 12VDC as a third option. Two 20 lb tanks lasted us for three weeks, but we used AC whenever it was available. I would guess that one tank should keep a small RV unit running for 2-3 days. I'm interested to see what you have in mind. Please share, and see my attached pics for some ideas for a semi-portable cooler.

One caveat, they need to be level! Ours wouldn't cool very well if it was off just a smidge, so we had to pay attention to that.

180px-Handtruck.jpg11 lb propane tank.jpgRvFridge1.jpglevelmeter.jpg

5 years ago

Typically, electrical compressors for fridges are sealed. The motor is inside the plumbing. As such, hacking it to take torque directly from an outside source is out of the question. I don't know if there are exceptions. Perhaps on a refrigerator truck.

Historically, the 1st fridges compressed and released air. This is possible, but, I think, inefficient. It has the advantage of not needing to be perfectly sealed.

Ammonia can be used as refrigerant. I think it's less toxic + expensive than modern refrigerants. Still nasty if it leaks in your face.

There are fridges powered by a burner. No moving parts. Quiet. I've only used 1. It was finicky, fussy, a bit unreliable. I don't know if this is representative of all of these. It may have been a problem with keeping a pilot light lit while cruising down the freeway in the motor home.

One could, of course run a generator to keep an electric cooler going. BUt maybe that is cheating... :)


6 years ago

Found this site about a guy using a jet engine to cool his beer:

Not very detailed but good for a laugh :)