Stirling Engine Generator Mk4 (Rocket Stove!) Part 8

Building of an easy, cheap and reliable, DIY stirling engine full size model! It will be fired by wood and could be a great stirlingkit if it works!


This is a fun engineering project that I will use to power a generator to provide energy. It will use an efficient rocket stove that burns really hot using wood that will hopefully drive it at great speed! This technology can use any fuel type with the correct burner so is dual fuel as well. I would like to provide plans / stirling engine kit for DIY builds and possibly build machines too.
This is all pivots on being able to produce an easy, cheap and reliable stirling engine! Watch this space…..

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Ok, I give up! until I can find a solution for the hot side seal the dynameter run is on hold!

I thought the silicone would be the solution to all the problems. After about 45 mins it started to fail. It failed due to a combination of impact with internal debris, misalignment and heat. I still think it could possibly be part of the solution along with something else.

The cold side seal on the other hand is still standing the test of time. This seal is only natural rubber with cotton canvas internally that is painted with a silicone emulsion. Of coarse it does not need to put up with much heat.

The piston misbalance is due to the pistons being naturally unbalanced. I think if they start tilting to one side, it exposes more piston area on that side which compounds the problem. I've been trying to think of a simple solution to this. Either springs or a stabilizing / parallel motion should sort this. I was trying to keep the engine as simple as possible so I'm a bit reluctant to go down this route.

So for the moment we will keep experimenting with different seal materials to get a better feel for what might work and aim to do something with the linkage to improve alignment.

All the best


Thanks for watching

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