Quote:
Originally Posted by vash
My friend and I made a home made sub when we were kids. His hamster hated it.
It lived, but we traumatized it for sure.  |
My neighbor and I built one when we were in 6th grade. We found the plans in some magazine. We soldered a bunch of tin cans together to make a long tube. The lids were all removed from the middle ones. We soldered a streamlined bow, stern and fins to that. The conning tower was a small paint can with a press in lid. It was open to the main compartment below. On the bottom of the main compartment was soldered a copper tube that was bent 90° to toward the stern and crimped almost flat at the open end. There was some ballast in the keel and a wire basket in the conning tower. There was some sort of a check valve in the lid of the conning tower, just a flap on the inside. Plop a hand full of alka-seltzer, fizzy or carbide tablets in the basket, seal the lid, put it in a pond and it would sink. Water would come in the bottom through the copper tube. Once the water covered up the tablets they started to fizz, closing the valve and forcing water out the copper nozzle. It would take off and fully surface before the fizz wore off. Only problem was it would sink for good when the tablets were used up. Then it was time to go diving to retrieve it.