This is just a guess but I would say roughly 1100J of energy at muzzle. Few years ago I experimented quite a bit with high mix hybrids and figured out some formulas that can be used to estimate muzzle energy.

Really nice work, I initially thought I was looking at an actual pneumatic flare gun by its original design, and thought that is cool. I really shouldn't have considering it was made by you haha. I love the conversion idea, and effort in keeping it looking stock. Nice valve design too, I cant say I ...

Fuck off, spamcunt.

So I work at a nuclear fusion start-up these days. We have ~1MJ worth of energy storage in 15kV capacitors, along with a hydrogen gas injection system that operates at >500psi. These are solenoid valves that fully dump within 1 millisecond. They are actuated with a ~5kJ, 4kV capacitor bank. I keep t...

I have wanted a lathe since I understood their capabilities. Late last year I finally bought one. A Monarch 10ee, that happened to be born some 3 months before my grandfather (4, 1942). After some careful (read 'creative') planning, and stressful (read 'careful') execution, a friend and I managed to...

Nice machine, and nice result.

For hydrotesting, cheap hand actuated grease guns generally go up to about 400 bar, used one for some hydroforming experiments a while back. The hardest bit is fittings, and managing to get a gauge in circuit.

I like the machine work you did. I love projects like this. I did the grease gun thing like mrfoo said, and it worked for me. I filled the cannon with water, then pumped grease in. I've read that you can modify the grease gun to pump water in, but all that did was leak for me. There's a way to do it...

Nice lathe.

Porta power gets my vote...oil is easier to clean up than grease. Testing a pcp reservoir.

Hello everybody! I am looking for advice regarding a project I would like to build: A pneumatic speargun. There are already some of those on the market, but they have a lot of shortcomings (maintenance, vendor parts, custom inflation valves, poor quality etc). The inner workings of these is similar ...

Im highly considering paying for the history of my machine. Monarch will sell information about then original purchase (price, accessories, etc) as well as where it was shipped to. Yes, the hammer seat and piston seat are both brass-on-steel. Appreciate the compliments, guys. Right now I'm building ...

jackssmirkingrevenge wrote: ↑

Sat Mar 18, 2023 9:04 am

Sometimes building tools and jigs is half the fun :D

And the other half is doing it again when you realise you've buggered something up :)

This is my first post here, not sure if this question is in the correct area. I'm getting ready to make alcohol gun and I got to thinking if alcohol vapors are the most explosive. I was wondering if anyone here has experimented with other substances, like butane, propane, or even gasoline to see whi...

jackssmirkingrevenge wrote: ↑

Mon Mar 13, 2023 9:49 am

MP5

Now I guess you need Rit-job STABO and ALICE gear, a flight deck helmet, and a balaclava.

The firing mechanism worked perfectly and it didn't explode, but the rifling is so worn that it was keyholing like crazy, the bullets weren't stabilizing at all. I'll probably re-barrel it at some point. You may be able to fix this with different loads. Suffice to say.... I have an 1895 Mauser (7mm...

300 meters is a long way. Remember that a pneumatic is probably going to be operating at less than 150 PSI, which is the max pressure of a typical shop compressor. Compare that to a typical 0.22 rifle that has an effective range of about 150 yards. That low power rifle operates at twenty thousand PS...