I'm really not sure about which spring would work best. I didn't use any spring for the slide valve.

I'm also considering multishot, which schematic would work? I would take JSR advice and go with the second schematic. I got 2 QEV+Slide valves multishots combos, both working great at 550 PSI - no ball valves. Where should a pressure gauge be placed? you can get a tee and connect it to the air cham...

man cave upgrades: Pride and Joy

Thats a vicious looking gun, in a good way.
Any damage pics?

Just a thought but if you can get them the right size the brush top tee would be interesting to try it's a problem to find them with the right diameter.. the rubber heads are great because even if the diameter is larger than bore diameter you can fit them snugly like this guy does. anyway, I'm almo...

not sure which one yet, but i gotta get me a chrono. I used chorno connect again today with my 15.5mm, got different but consistent readings.. get this: I dry fired it and got the same readings :oops: on a different topic, any suggestion for an easy accurate nail dart for my 15.5mm barrel? so far i ...

That sounds a little optimistic to be honest... Yes i know.. after my initial enthusiasm i did some reading on chrono connect and it turns out lots of people got wrong reading for different reason (background noise, natural reverb, echo ext..). (I guess i gotta change the title :( ) I think it's wo...

Yes, it's all metal.. the gauge too.

Has anyone used this one? Yes, i got it off ebay a few months ago. I only used it 5 or 6 times. It works fine and it will pump 600 PSI, but if you got a big tank it will take ages. I would say , if your tank is up to 150cc, get it. other wise, i got this - I had to lube it with silicone grease, and...

I used chrono connect app to check muzzle velocity & energy today. 8 shots gave me an average of 1021 FPS with standard deviation of 9.3. that's way better than i expected,and around 300 fps higher than GGDT predicted. I double checked the distance & settings on the app and it was all accurate, i gu...

That's a good looking conversion thanks man It's pretty much done now. only took me about 2 hours to make it. features: 3/8" QEV (added a spring) 3/8" Slide valve 1"X10cm (50cc) air chamber 10mm diameter, 25" long barrel (blow gun barrel) I removed the insides and cut some of the plastic, after put...

Of course, and less noise too - but at the expense of velocity. Yes GGDT shows a change from 100cc to 50cc chamber will only cost me 37fps..I'll go for it! So i was at the local market yesterday and i saw this toy gun for 5$..I was thinking, why not use it as a housing for the 10mm i planning? :ide...

That's a really good looking gun you got there! muzzle velocity is quite impressive for the pressure . what type of valve and pilot you got?

nothing beats the visceral joy of designing and building something that can blow holes in stuff.

Yes! we are all just kids after all !

Do you think making the air chamber smaller will result in more shots per fill?

I just shot it again and I've noticed it's really loud ( i had loud music on when i shot it before).. is that a bad sign? like barrel too short ext..?


thinking of making a silencer for it.