Hi, I know there are few people here that are interested in jet engines, pulse jets and other non-spudgun related projects, so if your interested go to have a look at my personal project page "RDX" at FB:
https://www.facebook.com/ResearchAndDevelopmentX
I post all my spudgun stuff here (spudfiles), but that FB site is only for my non-spudgun projects

I just made the site some time ago, so there is not much pics or vids or other things yet, but I'll keep posting them

Also feel free to "like" my page and ask anything there.
And that yellow vortex cannon there is a hybrid with toolies piston valve and outlet diameter of 90mm. Chamber is little over 5litres. I hope you like it
