This is what we will be talking about here- Factory made and home made

Money buys the first type and here is how to make the engine and a boat for the Home Made version -  think a video is easier and replace lengthy written instructions.Here video series to show you how to build your own diaphragm engine Pop Pop boat?

This is the first video in the 28 part  SCIENCE  TOY MAKER VIDEO SERIES

This will lead anyone through all the steps needed--GOOD LUCK

So now lest take a look at some Diaphragm style engines and their variations