Smoke Pressure and Leak Tester

The Dry Lake Racer

Smoke

A cheap and effect way of generating smoke is by using a RC model smaoke machine (a little uint designed for generating smoke for remote controlled ships/trains etc). The beauty of the smoke machine is that it can fit in an enclosed chamber and be driven by 12v.

Chamber

Tubing

Expandable Rubber Bungs

I have adapted some expandable bungs by taking ones used for swimming pools, drilling a hole through the bolt and attaching a bulk head.