sciencetoymaker | Part 21 Build a Putt Putt/Pop Pop Steam Boat s18 powered test @sciencetoymaker | Uploaded January 2009 | Updated October 2024, 10 hours ago.
Part 21 is Step 18, the step when you finally get to power test the engine! You don't need a boat to power test the engine. You must prime the straws every time you use the engine. And the first time you use the engine you should slosh some water around inside the engine so the little droplets of water can flash to steam and get your engine going. To start out put the candle flame in the middle between the front and the back of the engine.

For links to all the steps, go to
sciencetoymaker.org/boat/makeBoat4_07.htm