Hello everybody. So, I created an account on this forum and made a similar post 3 years ago and had a lot of replies from this community, thanks by the way, unfortunately I had to stop due to things that got out of my hands. But now, 3 years later I am planning on using the power of hybrid cannons a...

An old prototype I found digging through some archives.

A motor driven rotor pushes on a stiff steel rod that then whacks a hammer valve. In the test airsoft BBs were being gravity fed into a tee breech.

The valve is opened 6 times per revolution.

Nice electromechanical prototype. I did something similar, is what I showed, (thinking of feeding the automatic hybrid), with an advantage and a disadvantage. The advantage is that it is simpler, and the disadvantage is that I cannot exceed 9 or 10 bar, which is the maximum that the solenoid valve ...

I have the results of my calculs for the power. However I ask a question, in the simulator, I put a tensile strength of 10 bar on theburst disc. How to obtain these 10 bar of resistance by adding layers of aluminum foil and by doing tests or can we determine the thickness by calculs ? :D these resul...

So tels me what is the rôle of rifling in the brenneke rounds ? It is for stability or something ? In the past most shotguns had fixed chokes at the end of the barrel. Trying to fire a full diameter slug through a choked barrel means it will probably get stuck in the muzzle and blow the barrel. The...

Just dropping in a couple of weeks late to say: looks nice and hope to see some more progress.

CO2 tanks have a nominal pressure of about 58bar at 20°C, that's why all those paintball air regulators reduce the pressure from whatever is in the bottle to that level (850psi) so air and co2 is interchangeable. About the max. working pressure, looking at the steel tank I have here I think the mark...

A little teaser of what I've been playing with this past week, more details to follow over the next few days

Just playing with an antique

Very interesting! I would be worried about the BBs damaging each other in the magazine though, did you verify that they are intact after a few shots?

Here's something a little unusual that I acquired a while back, it took me some time to play with it as I needed to make an adapter for a new chamber and it's only recently that I was able to cut non-standard threads on the lathe. I bought this one without any accessories and with an air reservoir t...

Beautiful stick that shoots! It amazes me that it is from the mid-19th century, and it still works, with the repairs and adaptation that you did. It is a pcp from 1860! When you look at it you can see the similarity to a percussion lock , it really is quite fascinating and an interesting bit of his...

Nice idea, you could easily make something like the Villar Perosa



The magazine style would fit too!

Sorry to go to the sewers, and divert the topic of the publication a bit. ;) No need to apologize, I'm here for the humor as much as I am for the ballistics ;) How finely have you tried adjusting the distance between the barrel and valve body? The problem struck me while looking at the photos, if y...

jackssmirkingrevenge wrote: ↑

Fri Feb 26, 2021 7:43 am

Took it down to 600 psi and the results were very different:

So when do we get to see the unbalanced spool valve that opens with the anemic 19th century hammer at 3 kPSI?
(just kidding)
Good job noticing what the problem was. Much better fix than machining a spacer.