Gas-Bag

You can make a gas storage bag by sewing-gluing two large tarps together and sealing all the seams with a sealer like "seals it". Check for leaks using an air compressor and mild soapy water and a brush or sponge to wet at seams and connectors. Bubbles means there is a leak.

Offered by Darrell.

The gas bladder looks like a good idea to me. I can think of a way as the bladder gets bigger to trip a lever switch to turn on a compressor and fill a storage tank under pressure. Once the bladder is pumped down another or the same switch would then turn off the compressor. The compressor could be made from one of the common 12 Volt units sold to pump up tires. With this technique a smaller bladder could be used with a large active bio-mass generating methane. An old car or truck tire, inflatable plastic toys, plastic pillows, plastic swimming pool, air mattress, or water bed could all be used as bladders. The propane regulator would then have the pressure needed to run the regulator on the engine.

Offered by Mike.