Overall it looks good, nice to see that everything now loads properly over TLS, and the new skin is far more aesthetically pleasing than the ~2013 iteration, which made the site look like a shitty nerf gun forum from 2003. This may sound harsh, but with that abomination in the scrapheap where it be...

One of the things that seems to have been lost with the redesign is the previous reputation system, forum ranking is now based on post count. I see we now have a "thanking" system but it seems a shame that the previous thumbs up/thumbs down ranks are lost and it has been reset to zero. Stalin would ...

Thanks Al! Nice acquisitions, and quite a big step up from the Sherline. It is! At first I was just going to move the Sherline from work to home. I realized however that even though I now have access to the great outdoors, I still hadn't moved away from the "pen gun mentality" so to speak and the Sh...

I have been seeking alternatives to paintballs for some time and thought I had the perfect solution in the "dimpled wax shell powder balls" but they are now not available apparently despite the continued listing by several retailers. We stopped importing them due to lack of sales, also they were qu...

I got no problem s##ting right into the barrel myself. Hey JSR, can I borrow your chrony to see how fast it goes? I will quote the late Senator Robert A. Taft, commenting on the return of Lend-Lease materials supplied to America's allies during the Second World War: "Lending war equipment is a good...

Great idea! This way you are not limited to spherical projectiles... I had tried to make something similar a long time ago where a solenoid pushes a bolt forward simultaneously chambering the projectile while opening a balanced valve but sadly both my materials availability and electronics knowledge...

hectmarr wrote: ↑

Wed Feb 26, 2020 4:44 pm

Here a video of the operation.

Wow, the muzzle velocity is much lower than I expected



Looks great, very inspring! An electro-pneumatic repeater will definitely be on the cards once I get my workshop sorted.

Xamllew wrote: ↑

Mon Feb 24, 2020 7:31 pm

The original post was probably made when you were a child.

To answer the original question: viewtopic.php?p=82708#p82708

Some good ol' back to basics produce acceleration, love it!

At last, it's alive! https://i.imgur.com/SmWzrj1.gifv Did some running in on the lathe, everything seems to be working nicely :D The only thing I'm not happy about is the compound slide. Even with the gib screws loosened it seems to "stick" at some points, the handwheel movement isn't smooth at all....

Welcome to the forum! You can find them here, for a combustion spud gun you want HGDT:

viewtopic.php?p=387228#p387228

farcticox1 wrote: ↑

Mon May 18, 2020 5:48 pm

127mm or 12.7mm

Good catch, edited.

excellent use of the blow-forward valve, I really should incorporate it in one of my designs some day. Lovely damage shots too, though is the power a little inconsistent? Some of the GBs just slam through, others appear to ricochet.

202 meters per second with a 158 gram projectile. 2438 grains at 663 feet per second.

2379 ft lbs of energy. That's in .45-70 Government territory...

Here is my interpretation of the operating principle:



Good job fleshing it out!