As you may notice, quite a bit looks different! SpudFiles has now entered the modern era of technology. Please see yourself around and let me know of any questions or troubles you encounter. A few major items... -Previous [youtube] tags will be found left in posts, but videos will remain visible. Yo...

I think I came to the same conclusion about 10 years ago... I assume you found this... it gives a good clue, but I still wasn't sure... I think he means volume of the propane (meter) is 4% and the volume of the air (chamber) is 100% The pressure regulator proved to be the key element. A mid range ba...

I read spudblaster's hybrid fueling 101 which is stickied in the hybrid cannon forum. He told us how to do it, so I'll reiterate it here. I don't bother with any of this math myself because HGDT was thunk about so I don't have to do any thunking about fueling and I can just focus on my design. Here'...

Correct, meter pipe volume needs to be approximate, with the fine tuning of moles of propane to moles of oxygen being done by adjusting pressure in the pipe. If you find that you can't get the right load, you can change the length of a nipple on the pipe to add/remove 1/2"+, much as Latke said here....