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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Posted in Combustion Cannons
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm » in Combustion Cannons
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I've been wanting to get in some spud shooting action this fall before the weather got cold. I know it's been a while since I filmed anything for...

Last post

thank you for creating this website is there anything i can do to help
15 Replies

1901762 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
PVC Pipe Info

Last post by PCGUY

by PCGUY » Wed Oct 09, 2013 1:38 pm

PVC Pipe Info

PVC is used by plumbers, pool installers, and so on, and local building and construction regulations set the safety and materials...

0 Replies

115574 Views

Last post by PCGUY
Wed Oct 09, 2013 1:38 pm
The Offcial Machinist Thread: Revised 01/04/2014

Last post by Yexinss
Replies: 1097
by jrrdw » Tue Aug 02, 2011 5:54 am
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This is where members who need help getting machining done to their spudgun parts. There will be some guide lines and they are as follows:...

Last post

As my title described, 2k for modifying Daytona Recoil system to shoot Nerf darts. Full mechanical no wires no battery only HPA. If you can machine...
1097 Replies

1160435 Views

Last post by Yexinss
Wed Aug 25, 2021 12:22 pm
Good Deals Thread

Last post by PaperNinja
Replies: 41
by clemsonguy1125 » Wed Aug 11, 2010 8:01 pm
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I keep seeing good deals on ebay for cheap parts that would be great for spud guns but not the kind I build. I figured it would be a good idea to...

Last post

$550 4500psi compressor
41 Replies

369961 Views

Last post by PaperNinja
Wed Dec 05, 2012 7:08 pm
Launcher Failure Analysis Log

Last post by SEAKING9006
Replies: 32
by Velocity » Sun Apr 15, 2007 11:28 am
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The idea behind this thread was taken directly from a sticky on the Spudtech forums, seen at I, along with several other members, believe that this...

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I never made my inside out sleeve valve because I didn't know how to use o-ring, most important of all don't try gluing them in place, second if its...
32 Replies

374343 Views

Last post by SEAKING9006
Fri Jun 27, 2008 8:11 pm
Golf Ball Barrel FAQ

Last post by K8TOW
Replies: 34
by squeaks » Wed Jan 24, 2007 6:42 pm
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Okay, so one of the most asked about barrel is the golf ball barrel. Here are some frequently asked questions(and some unfrequent ones too).

Q: Why...

Last post

I use pvc plugs and caps
34 Replies

485607 Views

Last post by K8TOW
Thu Mar 16, 2023 5:22 am
Ammo Ideas

Last post by quinn whitsitt
Replies: 359
by PCGUY » Tue Apr 04, 2006 10:48 am
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First post

Ammo

I have put together a few ammo ideas for different size barrels. All pipe is PVC unless otherwise stated. If you think any ammo ideas should...

Last post

help sorry i typed to fast
359 Replies

5506403 Views

Last post by quinn whitsitt
Thu Feb 15, 2024 11:44 am

Topics

How much pressure can this safely hold?

Last post by jackssmirkingrevenge
Replies: 2
by Jose Arcadio Buendia » Wed Dec 25, 2013 8:28 am

First post

How much pressure can this safely hold?

I heated one side of a 3/4 sch 40 PVC coupling and inserted a soda bottle cap. After it cooled I took...

Last post

This one with a similar joint was used to 100 psi without failure, but it does depend on the quality of epoxy used and part preparation.

I've also...

2 Replies

4174 Views

Last post by jackssmirkingrevenge
Thu Dec 26, 2013 7:15 am
Extreme Epoxy

Last post by Gippeto
Replies: 3
by tigerblues28 » Sat Dec 21, 2013 8:05 pm

First post

I'm looking for a good strong epoxy. I've been using JB weld, and its all right, and I cant weld. Soldering is a possibility, but I want to use steel...

Last post

Good.

You'll need to calculate the lap shear failure point. Area of the joint multiplied by lap shear strength. If lap shear isn't published, use...

3 Replies

4626 Views

Last post by Gippeto
Sun Dec 22, 2013 2:00 am
Another Ammo Option

Last post by jackssmirkingrevenge
Replies: 8
by PeteS » Fri Dec 20, 2013 9:46 am

First post

I have been shooting these and they seem to work well. They fly straight and are pretty good at punching holes in things. They are not terribly...

Last post

Since I down sized the chamber on my 1.5 EMT hybrid I think they are all the same or less than a shot gun.

An effective suppressor should not be...

8 Replies

7910 Views

Last post by jackssmirkingrevenge
Sat Dec 21, 2013 8:34 am
Piston Material for Toolie Type Balanced Piston Valve

Last post by jackssmirkingrevenge
Replies: 16
by grumpyoldman » Sun May 26, 2013 2:29 pm
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I've read on the forums that aluminum or metal pistons are too heavy and plastics (Delrin, HDPE, UHMW) are preferable. But what if the pistons are...

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delron is way heavier than uhmw and I wonder... Just as heavy if not heavier than aluminum?

Delrin is only half the density of aluminum, and 1.5...
16 Replies

23256 Views

Last post by jackssmirkingrevenge
Fri Dec 20, 2013 7:05 am
New to spud launching, need help.

Last post by Greyhounds45
Replies: 2
by Greyhounds45 » Thu Dec 05, 2013 8:53 pm

First post

I am new to potato guns and almost have my first completely. I only need a 4 to 3 pvc schd. 40 adapter.
1. whats a decent barrel length for a...

Last post

Thank you for responding. my barrel is around 2-2 1/2 feet long. Also i have a ball valve.
I finished it and it works fairly well.

2 Replies

4216 Views

Last post by Greyhounds45
Tue Dec 10, 2013 5:14 pm
New to spud launching, need help.

Last post by Greyhounds45
Replies: 2
by Greyhounds45 » Thu Dec 05, 2013 9:40 pm

First post

I am new to this forum, but have been around forums for a while so I will try not to make any mistakes.
I have a few questions, one of which is more...

Last post

It's just ran off of compressed air, and it's schd. 40 pipe. Thanks!

edit: tested the spud gun today, and it works like a charm :D !!!!! next im...

2 Replies

3843 Views

Last post by Greyhounds45
Fri Dec 06, 2013 9:02 pm
Piston Valve Seat

Last post by Trauts
Replies: 2
by Trauts » Sat Nov 23, 2013 2:29 pm

First post

New to spudfiles and working on a golf ball cannon. In the process and I now understand just how annoying it can be to find the right parts because...

Last post

I've just been using my phone and cropping them to size forgot to mention. I figured that would be the case though, thanks!

The place was called...

2 Replies

4609 Views

Last post by Trauts
Sun Nov 24, 2013 12:20 pm
Spring Rate Equation for Regulator Spring?

Last post by grumpyoldman
Replies: 4
by grumpyoldman » Sat Nov 16, 2013 3:32 pm

First post

Hey Guys! Does anyone know an equation to determine the spring rate for a regulator spring? It would be for an inline regulator along the lines of...

Last post

Got it. I see what needs to be done now. Thanks again! And a big thanks to PCGuy for this great forum!

4 Replies

8814 Views

Last post by grumpyoldman
Sat Nov 16, 2013 6:48 pm
High Performance Ammo

Last post by jackssmirkingrevenge
Replies: 8
by sharpshooter » Thu Oct 24, 2013 8:37 pm

First post

Howdy folks, Its been years since I've done anything cannon related, but the bug has bitten again. (I left shortly after the SpudTech forums closed...

Last post

A foam sabot will shred in the barrel.

Trust me :)

If you're making a hybrid, I don't think saboting your rounds is really necessary. Unless...

8 Replies

7603 Views

Last post by jackssmirkingrevenge
Tue Oct 29, 2013 7:10 am
piston sealing

Last post by turkeypig666
Replies: 21
by dart guy » Tue Sep 24, 2013 3:28 pm
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First post

has anyone found a good sorce of rubber that is good enough for a qev

Last post

I joined here when I was 14 (18 now) And I still built a few airguns. I drive a dirtbike, but I got mine plated for street, so I'm all good.
21 Replies

17964 Views

Last post by turkeypig666
Thu Oct 03, 2013 4:44 pm
fire extinguisher problems

Last post by AlanFoy
Replies: 4
by urgle the danish cow » Sun Mar 17, 2013 5:10 pm

First post

hey i have a fairly new fire extinguisher that would be a great air tank for a current project but how can i make an air tight seal in connecting it...

Last post

Hey did you solve your problem? How did you fixed it? Please share the solution.

4 Replies

5268 Views

Last post by AlanFoy
Mon Sep 30, 2013 5:45 am
How to connect metal barrel to PVC chamber?

Last post by Technician1002
Replies: 6
by Cy4ka » Sat Sep 21, 2013 7:47 pm

First post

I'm looking for a way to connect a 2.5 steel pipe for a barrel to a 6 PVC chamber. I have no idea how I'm going to do it. Does anyone here have any...

Last post

Threaded pipe and threaded fitting.. Screw it on.

Mine are similar with plastic barrels and metal chambers. Concept is the same.

6 Replies

6318 Views

Last post by Technician1002
Sun Sep 22, 2013 7:15 pm
I have balls

Last post by duane
Replies: 25
by duane » Wed Aug 14, 2013 9:04 pm
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Tennis balls, that is.

This is a box of 50 Tennis balls that I bought off of EBAY. There are literally thousands out there, and some can be...

Last post

This is no better. I'll give up now.

Duane
25 Replies

21268 Views

Last post by duane
Tue Sep 10, 2013 6:07 pm
Tennis ball ammo

Last post by duane
Replies: 11
by duane » Sun Aug 11, 2013 1:53 pm

First post

I've been thinking about the tennis balls that I'll be using as ammo for my up-coming tennis ball mortar.

Admittedly, I know almost nothing about...

Last post

We made about 30 shots Saturday, without streamers. (I thought that I had a roll of the Orange surveyors tape in the truck, but didn't)

Didn't...

11 Replies

8005 Views

Last post by duane
Mon Sep 09, 2013 5:00 pm
Question on Pressure Rated Aluminum Tubing

Last post by grumpyoldman
Replies: 16
by grumpyoldman » Tue Aug 27, 2013 2:10 pm
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Hey guys,

The aluminum tubing is 6061-T6 Drawn (not Extruded), 2 inch OD, .065 Wall, ASTM B210. It's rated at Max 610 PSI @ 72 degrees F on...

Last post

Yep, that's true. Thanks for the help. I really appreciate it.
16 Replies

18618 Views

Last post by grumpyoldman
Thu Aug 29, 2013 9:18 pm
.177 Rifled Barrels

Last post by Gun Freak
Replies: 14
by Binary Blue » Fri Mar 29, 2013 9:19 pm

First post

Do any of you guys (in the US) have experience ordering parts from Crosman?

I heard that you can order replacement parts from them through the...

Last post

Ah ok that makes much more sense. Knew it was too goo to be true! Haha

14 Replies

11999 Views

Last post by Gun Freak
Thu Aug 22, 2013 3:22 pm
pematic airsoft mock mortar

Last post by dart guy

by dart guy » Thu Aug 22, 2013 8:35 am

I have an almost finished plan but some parts are gonna be hard to make and also how to fill, i was thinking that if i use a nail at the end of a co2...

0 Replies

6536 Views

Last post by dart guy
Thu Aug 22, 2013 8:35 am
Sabot, has anyone tried it yet?

Last post by jackssmirkingrevenge
Replies: 31
by SpudFarm » Wed Mar 21, 2012 11:07 am
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I just started plinking around with pneumatics again and love it just as much as before, best way to kill boredom and night sleep due to hard thought...

Last post

Spudfarm, if you're still around this might be of interest ;)
31 Replies

32491 Views

Last post by jackssmirkingrevenge
Mon Aug 12, 2013 5:21 pm
WANTED: fridge compressor

Last post by hawktalk
Replies: 5
by Lockednloaded » Sun Aug 11, 2013 7:00 pm

First post

I've been wanting a fridge compressor for a while, but I've also had zero luck at scrapyards and recycling plants. So, since a lot of members here...

Last post

haha i like this pic. im trying to get hold of someone from my local council. nob heads they have Facebook and email and don't reply too any of them....

5 Replies

5783 Views

Last post by hawktalk
Mon Aug 12, 2013 1:08 am
Need help,casting resin

Last post by andrew67
Replies: 8
by andrew67 » Fri Aug 02, 2013 5:11 pm

First post

Can anyone help with casting resin? I'm about to do a casting resin cast that needs to be 3cm thick,it'ss recommended to do the cast in 5cm layers,if...

Last post

Ok thanks for all the help ,I'll keep you posted.

8 Replies

7435 Views

Last post by andrew67
Sun Aug 04, 2013 1:38 am
breech for tennis ball

Last post by jsefcik
Replies: 7
by brettdotcom14 » Fri Jul 05, 2013 11:56 am

First post

i am finishing up my gun been shooting it and come to realize its a PITA to load it every time.

I would like a sleeve design breech load, doesnt...

Last post

Take a coupler nd sand out the inside till it slides over it , did it for my golf ball breech works great

7 Replies

8038 Views

Last post by jsefcik
Sun Jul 28, 2013 9:07 am
I've come across a little bit of pipe.

Last post by Blitz
Replies: 17
by Blitz » Sun Jul 14, 2013 2:47 am
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Someone I know offered me some 6 and 8 diameter schedule 80 pipe, as long as I get it off his lot.

I pick it up Monday. Any suggestions? :) By the...

Last post

Suddenly, pipe.

I placed my M1 Carbine and a 10' stick of 4 schedule 40 for scale. That, and a tape measure. My friend actually had TWO 8 diameter...
17 Replies

14465 Views

Last post by Blitz
Tue Jul 16, 2013 1:15 am
I can't find 2.5" ID steel tubing?!

Last post by jsefcik
Replies: 5
by Cy4ka » Sun Jun 09, 2013 10:02 am

First post

I'm having some trouble finding steel tubing with 2.5 nominal diameter to launch bottles from and also tennis balls. Does anyone have a source that...

Last post

Use pvc easier to find

How do you figure, you have been looking for a year and still have none..... smh..... :?

Nooo I cant find sdr26 I can...

5 Replies

7541 Views

Last post by jsefcik
Mon Jul 01, 2013 8:44 am
Lathes?

Last post by T_Money
Replies: 15
by 8tonsemi » Tue Dec 18, 2012 1:32 pm
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Can anyone lead me in the right direction of buying a mini metal lathe or wood lathe.

Last post

look on craigslist. Also, ESTATE SALES!!!!! I got a 3 foot lathe for 90 bucks at an estate sale..
15 Replies

19099 Views

Last post by T_Money
Sat Jun 29, 2013 10:13 pm
Pressure Rated DWV?

Last post by mattyzip77
Replies: 4
by Backyard Pneumatic » Sun Jun 23, 2013 11:24 am

First post

Hey Guys, new member here with a materials question. I'm finally getting started on my first serious pneumatic, a 3 piston valve launcher, and was...

Last post

the bushing should be fine... Just check for cracks>>>>

4 Replies

6689 Views

Last post by mattyzip77
Thu Jun 27, 2013 8:33 pm

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