spool valve design. primary intention: paintball

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
markdem
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Sat Aug 17, 2019 8:30 am

i came up with this design a few years ago and my intentions were to keep it secret until i could come up with a better prototype version that i could eventually produce and sell. my dream was - and still is - to have it cast in aluminium, very similarly to the Tippmann SL68's.

the prototype was a semi-success. very first gassing up was video recorded. malfunction was initially thought to be burrs from machining tearing up the o-rings. however my assumption now is that i was using cheap o-rings which swelled from pressurized co2. sadly i cant verify this assumption because the prototype is now in a landfill somewhere but i am fairly confident because i made a pump action nelson valve after this prototype with buna-N o-rings which worked quite well.

If anybody would like to use this information to create one of their own, i just ask to be given credit for the initial design and prototype. thank you

[youtube][/youtube]
animation of concept
animation of concept
metric
metric
measured schematic METRIC.png (5.8 KiB) Viewed 582 times
english for you old-world primitive types
english for you old-world primitive types
measured schematic ENGLISH.png (5.99 KiB) Viewed 582 times
all parts pre-assembly
all parts pre-assembly
20170610_021940 - Copy.jpg
20170610_021948 - Copy.jpg
this is the concept which i believe to be the best. the trigger holds back both the bolt AND keeps the paintball in place at the same time
this is the concept which i believe to be the best. the trigger holds back both the bolt AND keeps the paintball in place at the same time
triggered.png (4.49 KiB) Viewed 582 times
basically how i wanted the thing to look when i was done. pump action - of course
basically how i wanted the thing to look when i was done. pump action - of course
triggered pump.png (20.12 KiB) Viewed 582 times
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jackssmirkingrevenge
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Sat Aug 17, 2019 10:04 am

Nice work, I like it.

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this is the concept which i believe to be the best. the trigger holds back both the bolt AND keeps the paintball in place at the same time
Interesting idea!
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Moonbogg
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Sat Aug 17, 2019 2:28 pm

That's a really clever design. I like it! Nice work as well. Very interesting.
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hectmarr
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Sun Aug 18, 2019 11:07 am

I like the simple design. Good job.
Ideas don't make holes. The weapons yes! ;)
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