Some threads that might be of interest:

http://www.spudfiles.com/hybrid-cannons/topic21761.html

http://www.spudfiles.com/hybrid-cannons/topic19504.html

http://www.spudfiles.com/miniature-cann ... 22465.html

... the cartridge for a pneumatic type, but forgot to modify it for the hybrid function :P and thank goodness hgdt exists, I'm not good with trig. ... cannon trigger happy. With the shells, shots can be regulated, and cannons don't have to be loaded from the front. As for the price? not to ...

... them with plywood is easy, I need some assistance designing the cannons. I've seen a bunch of hybrid cannons, some designs that use shells, but so far I haven't noticed any hybrid shells. ...

I have never fired a hybrid before but I have experience of real large cannons, I have myself fired 130mm and 122mm cannons and seen probably several hundred shots, they make some ...

... in my ETG *fangirls*, i made a post about it http://www.spudfiles.com/hybrid-cannons/topic26229.html#p379639 . It is very ghetto so it will be nothing compared to what ...

... so and then open the valve to the chamber, which might help stir things up a bit. I use the same manometric meter (larger in volume than yours) on cannons with about 400cm^3 and 1400cm^3 of volume without issue. On the smaller cannon, I like the move the cannon around in the air a bit when it is ...

... Splitter! :D Just kidding! Nice job and a good introduction to hybrid cannons. Troubleshooting can be an issue, just rule out each problem one by one. Use water ...

... get to the details) As the title indicates this is my first step into hybrid cannons, and it took a while to actually get just right, but I love this thing so far (even ...

... category I would post this but as the final product is going to be a hybrid system then. I was convinced that the thread name should contain something ... about pistons was a great post here http://www.spudfiles.com/pneumatic-cannons/topic8157.html . The current ratio is 1:0.68 C:B more detailed ...

... so you'll be able to generate better functioning designs and safer cannons. You also want to be pretty careful with the oxygen propane thing, ... (which can stress and fatigue materials easily) And finally there's the hybrid cannon. The ultimate in power and performance and very capable of ...

This is your go-to thread: http://www.spudfiles.com/hybrid-cannons/topic13602.html

Alternatively, have you considered syringe fuelling? Much simpler than a meter pipe! http://www.spudfiles.com/how-to-databas ... 22301.html

Hey there :) I've made quiet a few cannons back when I was younger, and I never knew there was a community like this. ... for a challenge, and I came accross two. The first, mobile chernobyl's 10XGB Hybrid. http://www.spudfiles.com/hybrid-cannon-database/topic23523-60.html#wrap Brilliant ...

Would it be a bad idea to use a pop off valve to evacuate the area behind the piston rather than have a little piston connected to the main piston? Hmmm... copy-pasted from here . Would it be a bad idea to use a pop off valve to evacuate the area behind the piston rather than have a little piston c...

... air. I did find a thread on that: http://www.spudfiles.com/combustion-cannons/topic13337.html I don't think Jimmy's data is relevant to you because ... (40~50F), etc. Also, he was testing at atmospheric pressure. In a hybrid, not only does every pump stroke introduce turbulence into the chamber, ...

... a betting that the bigger issue is slowness of the propane diffusing in the air. I did find a thread on that: http://www.spudfiles.com/combustion-cannons/topic13337.html His results seem to be in line with what I am seeing. That includes the liklihood that ignition will more likely occur if a ...