And now for something completely different...
 

You just gotta love how YouTube suggests videos...

It all started with a see through jet engine this guy built. Technically interesting but not anything visually special.

Looking into his other videos soon turned up a see through rotary combustion engine:

https://www.youtube.com/watch?v=jLtyNtf9_ew

It turns out he does have quite a bit of rocketry content:

https://www.youtube.com/watch?v=yP2d3mnhiT8
https://www.youtube.com/watch?v=2sdVhrztfoU
https://www.youtube.com/watch?v=_xvVJQSGHts
https://www.youtube.com/watch?v=Gy8td5cWgAw


Bill