In my opinion this is the simplest way of making a stirling engine. Have fun in making it and dont forget to post you videos.
As Everyone knows a stirling engine is a hot air engine, which means the engine works purely on heat. The heat source can be anything from candles to stove. The basic working principle is hot air expands and cold air contracts. So the hot junction on one side and the cold junction on the other side.
1. Glass test tube which suits the diameter of the marble.
2. 5 marbles.
3. Plastic straw.
4. Rubber cork.
5. Glass syringe (Please dont use plastic syringe).