EDIT: I had some trouble with this thing, it wasn't igniting mixes. I adjusted the spark gap and it has done the trick but the in the process of going over everything I thought about how to improve it. I will be getting a better gauge for the chamber pressure, and making a spark gap that isn't flexi...

It's neat to see people building more small hybrids, because several years ago, almost nobody could fuel them accurately enough. :D A little more information like the pre-ignition pressures you use would be nice, but good job! Hey, thanks Mark! This is my first hybrid, but thanks to the information...

Greetings. The Party Popper, a burst disc hybrid: 50cc chamber, Malleable galvanised iron fittings. The T is 3/4". 3/4" union, unmodified. A rubber washer seals it well, and it hasn't degraded or shifted position at all. Fuelled using a syringe and a bike pump, the fuel is butane. Disc material is d...

Talk wrote:Nice but why only 20 psi? more psi more fun

As the name suggests there will be larger volume in the future

Thank you.

Yes, 14mm plywood (2 pieces of 7mm)

I was happy with a hit on the board at the time, but I could add some sights and do some long distance shots? Maybe a video for the future.

I would like to present to you all, Deuteragonist. It is a modest sized advanced combustion. Metered propane, chamber fan, 3 ignition points and rubber for protection, and insulation. DSCN1215.jpg I designed the cannon to shoot golf balls. The 40mm diameter barrel suits them perfectly and has indent...

Id"e also like to add I noticed a hairline crack in a pn18 20mm to 40mm barely used for a small standard combustion. Using pn12 40mm pipe to touch the reducers in the middle. Re-iterated basically PVC isn't meant for combustion spikes.

Top notch design SB its pure excitement to watch the TBMA-230.