Hybrid Cannons

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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...

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

556402 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
HYBRID FUELING 101

Last post by quinn whitsitt
Replies: 106
by SpudBlaster15 » Mon Mar 17, 2008 10:56 pm
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Part 1: Using traditional hybrid fuel meters correctly

Question: How many of those who have constructed hybrid launchers have used either an online...

Last post

thank you this is so helpfull!!
106 Replies

508376 Views

Last post by quinn whitsitt
Fri Mar 01, 2024 10:50 am

Topics

Xtreme-patator

Last post by hectmarr
Replies: 11
by nitrogigi » Thu Apr 22, 2021 5:11 am

First post

Hi guys,
i'm presenting to you my new project :
a hybride canon that will shoot 16mm glass BBs (kids toys ones), at 10 bars pre-pressure (~150PSI)...

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wow is supersonic!! :o

I imagine some of your creations also exceed the speed of sound ;) even though your projects focus mostly on function and...

11 Replies

19459 Views

Last post by hectmarr
Fri May 07, 2021 2:23 pm
HGDT calculator

Last post by jackssmirkingrevenge
Replies: 1
by nitrogigi » Wed Apr 21, 2021 7:09 am

First post

Hi guys!
does anybody still have a valid link to HGDT calculator? or could put it back online?
Many thanks in advance!
I'm currently building an...

Last post

You can find HGDT and GGDT here

I'm an old one from French forum patatorforum which is sadly quite dead due to restrictive laws and kids not...

1 Replies

7475 Views

Last post by jackssmirkingrevenge
Sun May 02, 2021 7:36 am
Large hybrid

Last post by SpudBlaster15
Replies: 10
by Norguns » Thu Mar 25, 2021 10:24 am

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Hello I have been here before but lost access to my account so I created a new one.
I recently decided to get my hybrid up and running again now...

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Ah, nostalgia.

It sure is! I thought you were gone from the forums! I havent had much time to stay updated the last decade or so.. Writing this...

10 Replies

30913 Views

Last post by SpudBlaster15
Sun Apr 11, 2021 5:54 pm
Mechanical detention valve for high mix hybrid

Last post by jackssmirkingrevenge
Replies: 9
by Rumpler » Sun Jan 31, 2021 12:46 pm

First post

Greetings, fellow tinkerers :)

after finishing my first Corona project - a 12mm, 140J PCP operated with a paintball tank (I'll post more about...

Last post

Well, you were right. :roll:

Hate to say I told you so :|

Rumpler (no connection to that airplane guy)

awww...

Thanks for that, it's a lot...

9 Replies

16229 Views

Last post by jackssmirkingrevenge
Sun Feb 21, 2021 7:34 am
Need help

Last post by jackssmirkingrevenge
Replies: 15
by 90zimara » Mon Feb 08, 2021 11:25 pm
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Hello everybody.

So, I created an account on this forum and made a similar post 3 years ago and had a lot of replies from this community, thanks by...

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LOL, looks like the fittings salesman's wet dream.

What do you expect from our (former) resident Kiwi :D

Will the fueling method of syringe work...
15 Replies

45902 Views

Last post by jackssmirkingrevenge
Sun Feb 21, 2021 7:27 am
Breech System For historical Pak 36

Last post by Anatine Duo
Replies: 26
by Alexypak36 » Wed Feb 03, 2021 5:01 pm
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Hi everyone
I introduce myself. My name is Alexy, I come from France. I am a student in an engineering school and passionate about history of the...

Last post

edited 1234
26 Replies

31787 Views

Last post by Anatine Duo
Fri Feb 12, 2021 7:34 am
Regarding the Legality of Hybrid Spud Guns in the USA

Last post by Moonbogg
Replies: 11
by headslammer » Wed Feb 03, 2021 1:19 am

First post

Hello all, good news!
I reached out to the ATF regarding hybrid spud guns, and actually got a response!
Here's the result:

Last post

I almost blew my head off one time. I never considered the risk of it and no one ever mentioned it, but one day I walked out to the firing line to...

11 Replies

42990 Views

Last post by Moonbogg
Fri Feb 05, 2021 7:39 pm
Single-pump hybrid concept

Last post by hectmarr
Replies: 6
by Skywalker » Thu Dec 31, 2020 7:04 pm

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I like @hectmarr 's work on these autonomous hybrids. I'm thinking about a design for a single-pump, high-mix hybrid. It seems to me that going for...

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Too bad I can't try. I have very limited resources, and I only think about what I can build. The basic model I have built is simple to build, with...

6 Replies

22840 Views

Last post by hectmarr
Fri Jan 01, 2021 6:21 pm
I got some questions.

Last post by jackssmirkingrevenge
Replies: 35
by PracticallySane » Sun Dec 13, 2020 3:01 pm
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So I've put something together, its a hybrid clone of my phenumatic rifle. Right now they share a barrel but it will get its own dedicated when...

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I'm not going to say that connecting a few turns of conductive wire to the spark plug, and a small appropriate battery, is another option because you...
35 Replies

57954 Views

Last post by jackssmirkingrevenge
Fri Jan 01, 2021 8:29 am
HA-VI

Last post by jackssmirkingrevenge
Replies: 11
by hectmarr » Wed Jun 10, 2020 1:24 pm

First post

I am trying some ideas to simplify my weapons as much as possible.
This new sistem has the following advantages:
1- It has no piston
2- It has no...

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I will try to include a toroidal turbulator, to mix the fuel and air much more, during the 0.5 seconds it takes to enter the combustion chamber using...

11 Replies

47499 Views

Last post by jackssmirkingrevenge
Thu Dec 17, 2020 6:11 pm
Autonomous pistol .22

Last post by jackssmirkingrevenge
Replies: 13
by hectmarr » Sat Aug 22, 2020 12:12 pm

First post

My new self-made short gun. It is a hybrid pistol, with a built-in air pump, that operates with 8x and five strokes only. It shoots common pellets,...

Last post

I tried to think like a simple rupture disk, but it lasts for many shots before changing it, and well, something very small and simple to build....

13 Replies

34608 Views

Last post by jackssmirkingrevenge
Sun Oct 18, 2020 9:24 am
Cooking up a little something...

Last post by Moonbogg
Replies: 79
by Moonbogg » Thu Mar 07, 2019 2:35 pm
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Any of the old regulars still around? I'm back and I'm working on a new hybrid. Aluminum, relatively smallish/medium sized and 3x operation with a...

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A streamlined projectile could be interesting. I think the mass would have to be relatively low and use a sabot, like a dart or something. Could...
79 Replies

102991 Views

Last post by Moonbogg
Sat Aug 08, 2020 1:59 pm
Port size vs performance

Last post by ToasT
Replies: 8
by Moonbogg » Thu Jun 11, 2020 6:43 pm

First post

Intuitively I want to make a port size the same diameter as the barrel for maximum flow. However, intuition often fails. HGDT predicted that...

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Not that I have much to add to this, but It's threads like this that make me a fan of spudfiles.

8 Replies

55149 Views

Last post by ToasT
Fri Jun 19, 2020 3:13 am
I bring you some cannon performance data

Last post by jimmy101
Replies: 5
by Moonbogg » Sun May 31, 2020 12:17 am

First post

I wanted to get more data but I ran into issues with the chrony giving error codes and getting knocked over from high winds. I also ran out of limes...

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Caliper in the fruit isle? Just take a little length of barrel!

Security? Yeah it's that weirdo putting limes through a pipe again...

Yeah,...

5 Replies

34562 Views

Last post by jimmy101
Mon Jun 15, 2020 4:53 pm
Cooking up a little something else...

Last post by Moonbogg
Replies: 8
by Moonbogg » Thu Apr 23, 2020 1:16 am

First post

Tonight, my next cannon was born in my mind and my heart started racing. That means this is happening. Not right away, but this will become a...

Last post

However, what I am trying to avoid is running over the o-ring with any kind of holes to avoid shredding it over time
Good catch.
I'm excited about...

8 Replies

17744 Views

Last post by Moonbogg
Thu Apr 30, 2020 11:34 pm
TBMA-230 V2.0

Last post by jackssmirkingrevenge
Replies: 88
by SpudBlaster15 » Wed Nov 23, 2011 7:03 pm
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Thermobaric Mass Accelerator Version 2.0
AKA Gun Freak's favourite launcher.

Recently, I decided to rebuild the TBMA-230, which had been sitting...

Last post

Also, disappointing to see that there is apparently no support for generic HTML5 video embedding on this site. If I am missing something, please let...
88 Replies

86215 Views

Last post by jackssmirkingrevenge
Wed Dec 25, 2019 11:01 am
Planning the new hybrid

Last post by hectmarr
Replies: 15
by hectmarr » Mon Jul 15, 2019 12:08 pm
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I carried out tests of the system for repetitive firing of the new hybrid that I plan to build :D The caliber will be small, (according to my...

Last post

I love it!

Worthy of The Grey Room :D
Wow! The Gray Room is a lustful dream of weapons! I'm going to start painting girls in underwear on the side...
15 Replies

15921 Views

Last post by hectmarr
Thu Nov 14, 2019 9:44 am
Two-stage hybrid

Last post by hectmarr
Replies: 32
by hectmarr » Thu Aug 15, 2019 5:51 pm
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I am working on this idea. It is a combustion chamber A , with a mixture of butane-air, at 80 psi, and a combustion chamber B , the same, with a...

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Sometimes the ignition may fail. Make sure that the piston doesn't damage the spark gap by hitting it. I'd suggest having the spark gap contacts be...
32 Replies

28538 Views

Last post by hectmarr
Mon Nov 04, 2019 9:42 am
Destruction video

Last post by Moonbogg
Replies: 8
by Moonbogg » Sun Sep 29, 2019 9:21 pm

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Sorry for the wind. I suck at videos. Had a ton of fun today and though't I'd share some of the better clips. The last clip is how soda cans handle...

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Ah, finally! Some proper damage :D what were you shooting in terms of projectiles?

All 12oz sodas except for two lime shots from the small barrel....

8 Replies

11635 Views

Last post by Moonbogg
Sat Oct 05, 2019 2:25 pm
Autonomous hybrid IV

Last post by hectmarr
Replies: 32
by hectmarr » Wed Mar 20, 2019 8:58 pm
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This is the project that I am working on. It is the prototype 4, of the series of autonomous hybrids.
I plan to introduce improvements, in several...

Last post

chronograph

Glad to hear you finally have access to one :D
Yes, occasionally, when I go home. I have to transport the hybrid in secret 8) and with...
32 Replies

27820 Views

Last post by hectmarr
Sat Oct 05, 2019 10:36 am
Timing a Piston Valve Hybrid Cannon and Barrel Material

Last post by jackssmirkingrevenge
Replies: 3
by TenTerabyte » Sun Aug 18, 2019 7:50 pm

First post

I have built a few pneumatic cannons before and I am planning to make a hybrid cannon. I would rather use a piston valve than a burst disc. I want to...

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Further to what Moonbogg said, many hybrid piston designs dump the area behind the piston as soon as it starts moving, allowing it to snap open much...

3 Replies

6307 Views

Last post by jackssmirkingrevenge
Tue Aug 20, 2019 7:31 am
HELP ME ESTIMATE THE DISTANCE OF THESE SHOTS

Last post by D_Hall
Replies: 5
by Moonbogg » Fri Aug 02, 2019 1:13 am

First post

Not much to work with, but you can see the impact of the first shot just above the propane bottle. 8 OZ soda cans at 3X, approx 30deg angle (you can...

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As a native....

RULES OF THE OPEN DESERT

1 - Bring lots of water (duh).
2 - Tell somebody where you're going, the route you'll take to get there,...

5 Replies

7352 Views

Last post by D_Hall
Sat Aug 10, 2019 8:19 pm
Rifled aluminum barrel vs PVC driveband?

Last post by jackssmirkingrevenge
Replies: 4
by Alex345 » Mon Jun 10, 2019 10:49 am

First post

This would be for a hybrid cannon. If the caliber would be 30mm using a 5mm (10mm also an option) thick aluminum tube firing projectiles with a PVC...

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I think you'd need some pretty deep grooves in order to avoid the driving bands being stripped, and perhaps PVC isn't the best material either, I...

4 Replies

7411 Views

Last post by jackssmirkingrevenge
Wed Jun 12, 2019 5:37 am
"SC3650" In-Line Piston Hybrid Cannon

Last post by Moonbogg
Replies: 4
by Moonbogg » Wed May 22, 2019 8:05 pm

First post

This is the SC3650 In-Line Piston Hybrid Cannon. The entire build log from beginning to end is in the link below. I'll just show the cannon here and...

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You know what, I think you might be onto something with this issue. The reason is because I am using the same meter pipe that I use for my venom...

4 Replies

5896 Views

Last post by Moonbogg
Tue May 28, 2019 12:48 pm
My first hybrid gun

Last post by jackssmirkingrevenge
Replies: 14
by Vadim » Tue Apr 30, 2019 4:37 pm

First post

After two monthes i finaly made my first hybrid gun. It took so long because of the lack of money and knowledge. It's not fully finished yet but it...

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Excellent! and as a small aside, your spoken English is impressive too.

I suppose you cannot blame the neighbor for complaining, a hybrid of this...

14 Replies

12283 Views

Last post by jackssmirkingrevenge
Tue May 14, 2019 7:30 pm

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