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by farcticox1
Tue Jun 29, 2021 6:15 pm
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Tennis ball launcher

Atempting to make a low powered tennis ball launcher, couldn't find a suitable piece of pipe for the barrel so made my own from flat piece of stainless, not perfectly round and has a bit of a seam but I think it will do the job.
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by stup86
Thu Aug 26, 2021 10:29 am
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Re: Thoughts on my piston valve design

Just to update anyone that is interested... This project is not dead, but life took over and 2 years passed. I had some issue with the 3D and lost my latest revisions, so will have to revisit the design. After re-reading this entire thread again I have some changes I'd like to make. I will post any ...
by mark.f
Wed Sep 15, 2021 9:13 am
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Re: What caliber ammo is most available In 2021?

I would say red chef caliber is more available at my local supplier than russet.
by mark.f
Thu Sep 16, 2021 7:01 am
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Re: "In the world of spuds today"

joergsprave v.2 incoming. :mrgreen:
by mark.f
Sat Aug 28, 2021 12:27 pm
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Re: Victorian "Air Cane" brought back to life

jackssmirkingrevenge wrote:
Thu Aug 19, 2021 11:32 am
KeyMod
Quad rails god rails. :mrgreen:
by Solar
Thu Oct 28, 2021 1:57 am
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Re: Electro-pneumatic Eclipse with Air-burst rounds

The shells can hold about a dozen .68 sized paintballs and around 40 .50 caliber ones. We use biodegradable sabots on either side of paintballs so there is no risk of shell not opening.
by Solar
Wed Oct 13, 2021 10:49 pm
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Re: Electro-pneumatic Eclipse with Air-burst rounds

You can fire them at as low a pressure as you want with smooth bore. The rifled rounds need a little push to cut the grooves though. We want to do some paintball and airsoft rounds as well but need to get the base products off the ground first. Going to revisit the revolver in a 5 round version and ...
by Solar
Tue Oct 12, 2021 10:22 pm
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Electro-pneumatic Eclipse with Air-burst rounds

Latest electro-pneumatic with automated velocity control and laser range finder. Air burst system optional. FCU has electronic pressure sensor, firing, round charging and programming based on LRF data.

Image of airburst was a round fired at 400fps 150ft from target.
by iknowmy3tables
Sat Oct 23, 2021 11:02 pm
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Re: How far does it go!

good news while it was fun to refresh my trigonometry and kinematic equations I found a projectile calculator online as soon as you enter an initial height time in flight and angle you should get a result https://www.omnicalculator.com/physics/projectile-motion based on your 16seconds at 45 degrees ...
by iknowmy3tables
Thu Sep 16, 2021 6:47 am
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Re: A tale of two valves

Lol, I see what you're saying a lot more energy in the larger one used inefficiently. I'll make a video next time I visit my friend. Not a strictly controlled test but the large cannon was filled to something like 80psi the small cannon filled to a fraction of that shooting the same tennis ball we s...
by iknowmy3tables
Wed Oct 13, 2021 10:00 pm
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Re: A tale of two valves

I stopped by my friend's place made a simple test shooting shuttlecocks made from bottles at 60psi vertically
by FighterAce
Sun Nov 07, 2021 8:55 am
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Designing a inline piston pressure regulator - Fluid statics math model

Hello everyone! I finally found some free time after finishing my undergraduate degree and I'm starting to get back into this hobby. One thing I always wanted to make is a pressure regulator to fill my creations from a external tank. Currently I have a 2l fire extinguisher to use for this purpose. M...
by Solar
Mon Oct 11, 2021 5:26 am
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Latest Eclipse Defense 37mm Pneumatic

Eclipse 37mm rifled or smooth bore straight pneumatic with variable velocity control. Positive firing pressure piston valve with 1200psi max rating. Side-loading breech with release activated by fore-grip. Can be configured case-less or to chamber glass filled nylon telescoping ammunition casings. N...
by Moonbogg
Tue Oct 12, 2021 10:12 pm
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Re: Latest Eclipse Defense 37mm Pneumatic

The legend returns! Looking nice, Solar. I hope to see some video action at some point.
by Solar
Thu Nov 11, 2021 5:23 am
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Re: Latest Eclipse Defense 37mm Pneumatic

Iknowmy3tables,

I am not really active elsewhere but will try and be everywhere once we are in production. I will also be able to share more details of the system then as well.

Thinking about getting onto some airgun and firearm related sites to preach the gospel. Any recommendations?