Is impressively engineered, but it runs off compressed air rather than being an actual 4stroke petrol engine .....

For that reason, this is alot more impressive! :-)

 

I can't say how impressive that is. I am lost in admiration for his skill in the construction.

Must have been quite a moment when he got it to rotate. How fantastic if he could get something like that to run independently on fuel.

Les

 

Some of the things that people into model aircraft are building are amazing

 

You mean like the Ferrari 100c flat12 4stroke engine in the post above yours! Working gbox too, it could be driven if you could find someone or something small enough to pilot it

 

I missed that one. Quite amazing!

Les