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"In the world of spuds today"

A place to ask general spud cannon related questions.
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Re: "In the world of spuds today"

Unread postAuthor: farcticox1 » Fri Jan 26, 2018 7:13 pm

I sorta thought you would have all seen his stuff but I guess it's not that old. I like the marble machines 8)

If I build one I'd large it up a bit :idea:

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Re: "In the world of spuds today"

Unread postAuthor: hectmarr » Fri Jan 26, 2018 7:59 pm

Style refined in aesthetics and a fantastic weapon. I like very much! :bounce:
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Re: "In the world of spuds today"

Unread postAuthor: farcticox1 » Tue Jan 30, 2018 4:22 pm

I have been looking around for some possible safe to use indoor ammo, Nerf darts/balls, foam balls etc. Got some 20mm darts and 22mm foam balls coming, 3/4" Sch 40 PVC :idea:
Found a site selling balls for an airsoft grenade launcher, surprised to see how tight a fit they are :shock:

Material: High Density Foam
Dimensions: 50mm diameter for a superior air seal in a 40mm launcher.
Application: Used as a projectile for Airsoft M203 and other similar Airsoft Grenade Launchers.
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Re: "In the world of spuds today"

Unread postAuthor: Zeus » Tue Jan 30, 2018 8:19 pm

Stealing my contest idea boy! Better not be touching oxygen....

Quite curious about your results with it though
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/sarcasm, /hyperbole
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Re: "In the world of spuds today"

Unread postAuthor: farcticox1 » Tue Jan 30, 2018 8:36 pm

No worries, I'm judging
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Re: "In the world of spuds today"

Unread postAuthor: jackssmirkingrevenge » Wed Jan 31, 2018 7:12 am

20mm PCP custom build from Finland...



20mmpcp.jpg


I believe the barrel is from a 20mm cannon :shock:

Build Log on the GTA forums
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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Re: "In the world of spuds today"

Unread postAuthor: hectmarr » Wed Jan 31, 2018 9:19 am

uhhhh !!! awful! it sounds beautiful! :bounce: :bounce:
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Re: "In the world of spuds today"

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Re: "In the world of spuds today"

Unread postAuthor: Zeus » Thu Feb 01, 2018 4:59 am

ITWOST, V1 didn't have the giddyup I needed, time to go over to a conventional(ish) hybrid cartridge. Hopefully my welding skills are sufficient. I expect 12ml at 28x should give me the required gas volume. If not, I'll be tapping gas from before the projectile for extraction.
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Re: "In the world of spuds today"

Unread postAuthor: jackssmirkingrevenge » Thu Feb 01, 2018 7:11 am

oooh... watching this space.
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hectmarr wrote:You have to make many weapons, because this field is long and short life
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Re: "In the world of spuds today"

Unread postAuthor: Zeus » Thu Feb 01, 2018 7:38 am

Yeah, I tried PVC and an atmospheric pressure propane/O2 mix, but between turning the fittings narrower and you know, PVC, I had splitting problems and it wouldn't move my bolt simulator far enough. Stress testing on the fill valve/spark gap tomorrow (I hope). Built it in a threaded fitting so I can inspect it.
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Re: "In the world of spuds today"

Unread postAuthor: hectmarr » Thu Feb 01, 2018 8:15 am

Zeus wrote:Yeah, I tried PVC and an atmospheric pressure propane/O2 mix, but between turning the fittings narrower and you know, PVC, I had splitting problems and it wouldn't move my bolt simulator far enough. Stress testing on the fill valve/spark gap tomorrow (I hope). Built it in a threaded fitting so I can inspect it.

What do you use to test O2?
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Re: "In the world of spuds today"

Unread postAuthor: Cthulhu » Thu Feb 01, 2018 10:22 am

I realized last night I need to stop whining about not having a lathe and just use what I've got...
So I shoved a nail in my drill and turned it with files.

I tried to make a nice dart for my blowgun, and I even attempted bluing the tip. Anyone have advice on getting a better color throughout the piece?
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I went for a "bullet" shaped tip and a gunmetal blue
This weapon serves to silence the noisy speakers of the stupid of the other street! (joke) -Hectmarr
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Re: "In the world of spuds today"

Unread postAuthor: hectmarr » Thu Feb 01, 2018 3:19 pm

Try heating the metal to pale red, (obviously, before inserting the plastic), and immerse it in dirty engine oil. There remains, the metal, a blackish color. For the plastic, paint it, simply. Your darts are very nice.
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Last edited by hectmarr on Thu Feb 01, 2018 7:35 pm, edited 1 time in total.
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Re: "In the world of spuds today"

Unread postAuthor: Zeus » Thu Feb 01, 2018 4:26 pm

I just used a series of 3/4" (20mm) PVC fittings, but to work in my device, I had to make them smaller. Unfortunately the fuel mix was a bit too powerful
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Re: "In the world of spuds today"

Unread postAuthor: farcticox1 » Tue Feb 06, 2018 7:12 pm

I think this 3/8 solenoid valve will work nicely when triggered by the manual button :idea:
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