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by jackssmirkingrevenge
Wed Oct 07, 2020 4:39 pm
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Re: Regulating ROF in a BBMG with constant air flow (solution)

Image doesn't seem to be working.

Here is something along similar lines I had worked on: viewtopic.php?f=29&t=23240

Feed was not very reliable on the prototype I had made but the basic idea worked:

by jackssmirkingrevenge
Wed Oct 07, 2020 4:15 pm
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Re: Autonomous pistol .22

Another beauty, nice work! I love the simplicity of the resetable valve. Did you check at what pressure it will "pop"? The gun was literally silent! This is one interesting elements of hybrids vs pneumatics, the heat generated by combustion is a significant contributor to the pressure, and therefore...
by farcticox1
Fri Sep 04, 2020 2:52 pm
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Re: Short question topic

I found the same with steel bbs, different barrels made no difference.
by markdem
Fri Oct 16, 2020 3:34 pm
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stonebow

Otherwise known as a pellet/bullet shooting crossbow. I built this thing to see: A) how accurate are they? B) how fast do they shoot? What I've learnt is that these things are super finnicky! I've shot paintballs with insane ball-on-ball accuracy at 25 yards, then tweaked the string/pouch and had pa...
by jackssmirkingrevenge
Sun Oct 18, 2020 4:59 am
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Re: Autonomous pistol .22

As brilliant as the "captive ball" is in terms of simplicity, I feel that there must be some significant power loss overcoming the o-ring friction, even if the ball bouncing back is not an issue. My impression is that a stepped piston will ultimately give the best performance: https://i.imgur.com/lE...
by jackssmirkingrevenge
Thu Oct 17, 2019 6:27 am
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Re: shut-off valve suppressor

I've been revisiting this idea in my head lately, maybe pistons would work as suggested earlier where a loose ball was less than ideal: https://i.imgur.com/0VVikt2.gif Not shown are the return springs keeping the pistons in the "rest" position, as well as some sort of flow control screw in the porti...
by jackssmirkingrevenge
Mon Oct 26, 2020 6:11 am
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Re: JSR's workshop chronicles

Finally some activity! https://i.imgur.com/l4lZK8w.gifv 1mm deep cut in C12L14 steel just for the purposes of testing. I found a nice little business not far away that does small quantities for a variety of materials and I made an order to start things off: https://i.imgur.com/Gtmn3sk.jpg A neatly s...
by Labtecpower
Mon Oct 26, 2020 4:55 am
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Mechanically actuated quick dump valve

To get myself to build some stuff again I decided to slap a cannon together in my lunch break, with all designing and calculating done on the fly. I noticed that the projects where I spend a lot of time designing and preparing often don't actually end up being built at all.. Basically this is a quic...
by jackssmirkingrevenge
Tue Nov 10, 2020 11:01 pm
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Re: JSR's workshop chronicles

Here's my latest toy. Making a 1000x200 mm surface plate, needed some precision measurement Neat! Still some way away from that level (pun?), I'm here impressed by automatic feed... look at it go! https://i.imgur.com/fL4Z0XR.mp4 I think I've machined more steel in one evening than I did with my She...
by jackssmirkingrevenge
Sun Nov 15, 2020 5:04 pm
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Re: JSR's workshop chronicles

How's accuracy? Have you done all the alignment checks? If you don't have a machinist's level to level the ways, it's worth doing a quick eccentricity / alignment check using "Rollie's Dad's Method" I still don't have a dial indicator... but I did play with some test cuts and everything seems to be...
by jackssmirkingrevenge
Fri Nov 27, 2020 7:12 am
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Re: JSR's workshop chronicles

Quick Change Tool Post installed: https://i.imgur.com/sGfIXf0.jpg A very solid bit of kit for the price, much better than I expected. A little taller than I expected so I milled out a 5mm deep square on the compound slide to give a bit more distance before the holder bottoms out and to keep it rigid...
by Moonbogg
Sun Nov 22, 2020 1:30 am
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Re: JSR's workshop chronicles

That's actually pretty good. It actually looks exactly like many sketches I've seen over the years in machine shops. A lot of places work off of sketches just like that. The information content is what matters, and as long as they know what to do, then the drawing is just fine.
by PracticallySane
Tue Nov 24, 2020 7:37 pm
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I'm back!

Hey guys, its been a very long time. I previously used the name "*###*" I lost access to my account and it seems I'm sol as far as recovery is concerned. I have built many more great toys over the years and I felt like getting back into the community to share my knowledge as well as to learn and bec...
by jackssmirkingrevenge
Mon Nov 30, 2020 8:07 pm
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Re: "In the world of spuds today"

Not spudguns exactly but some amazing miniature pneumatics that are actually functiuonal:



by jackssmirkingrevenge
Mon Nov 30, 2020 8:21 pm
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Re: "In the world of spuds today"

hectmarr wrote:
Mon Nov 30, 2020 8:17 pm
women etc. :)
:lol: :lol: :lol: