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...

Last post

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

1112798 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

718955 Views

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

Topics

Hybrid Fuel Meter Pressure?

Last post by starman
Replies: 13
by kjjohn » Thu Nov 05, 2009 6:09 pm

First post

I was calculating the fuel meter size/pressure for a 6x hybrid on HGDT, when I realized that the number start to get very big. With a 127ci chamber...

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How long would a MAPP tank last with using such high pressures?

A tank of MAPP is likely to last the useful life of your cannon....mostly meaning...

13 Replies

3431 Views

Last post by starman
Fri Nov 06, 2009 12:21 am
Method for capturing combustion pressure peak

Last post by D_Hall
Replies: 37
by Moonbogg » Tue Oct 06, 2009 2:25 am
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Hey,
Sorry if this has been posted, but I found it while using the google . Attach a check valve and a high pressure gage to a chamber and voila,...

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D_Hall, when using strain sensors, is something like a half or full bridge circuit adequate to remove the bending stress that would be problematic?...
37 Replies

9648 Views

Last post by D_Hall
Wed Nov 04, 2009 6:46 pm
Just Went Mach 1

Last post by rikukiakuchiki777
Replies: 30
by MrCrowley » Fri Sep 11, 2009 1:54 am
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According to HGDT, I've just broken the sound barrier with a 4 gram, 10mm, steel bearing in my hybrid The M480. HGDT says 400m/s but to be honest my...

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I know this is a little late, but congratulations on achieving mach 1. That sure is an incredible feat to outclass a handgun (maybe not in every...
30 Replies

11566 Views

Last post by rikukiakuchiki777
Mon Nov 02, 2009 5:48 am
Fuel Meter Volume To Combustion Chamber Volume?

Last post by spudkilla224
Replies: 5
by spudkilla224 » Sun Oct 25, 2009 5:42 pm

First post

Hello everyone, I am new to the hybrid side of potato cannons. And I have searched all over spudfiles, the spudtech archive and google and the wiki,...

Last post

Ok thanks for all of the info and help everyone! :idea:

5 Replies

4318 Views

Last post by spudkilla224
Sun Oct 25, 2009 6:27 pm
Hybrid Questions?

Last post by Moonbogg
Replies: 19
by spudkilla224 » Sun Oct 11, 2009 11:33 am
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Hello everyone, i'm in the process of designing a hybrid cannon. And I have a couple questions about them.

First is using a 1.5 SCH.40 Steel Pipe...

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yeah so would 10 lenght be ok?

Well I can't say what length will DDT because I don't know. All I can do is share what I would do. If it were me I...
19 Replies

6342 Views

Last post by Moonbogg
Mon Oct 12, 2009 12:14 pm
What's a self-venting piston valve?

Last post by Moonbogg
Replies: 3
by kjjohn » Sat Oct 10, 2009 8:13 pm

First post

Within the the next few months I am going to begin work on an advanced hybrid. I have already completed most of the design, but it requires a valve...

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Ah, sounds like a great idea. I like the idea for choosing burst, or unseating pressure.

3 Replies

2595 Views

Last post by Moonbogg
Sun Oct 11, 2009 7:42 pm
Hybrid Cannons

Last post by jimmy101
Replies: 17
by Reactor4 » Sat Oct 03, 2009 9:40 pm
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Okay, im not new to building cannons, but all i have ever built are pneumatics and combustion. Could someone just briefly explain to me some criteria...

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I shot one once across the english channel and saw the tree tops move, so they are capable of traveling many many miles.

{Monty python voice} Pull...
17 Replies

9254 Views

Last post by jimmy101
Wed Oct 07, 2009 10:30 am
hybrid 4.5mm

Last post by Technician1002
Replies: 12
by ghostbuster » Mon Oct 05, 2009 1:54 pm

First post

hi, i want to make a hybrid cannon with a 4.5mm pellet barrel, a map sensor, a propane or butane sensor, microcontroller, electric ignition , air...

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Most flammable gas sensors are cross fuel sensitive, but calibrated to the gas they are set up to detect. For example a propane leak detector for a...

12 Replies

2982 Views

Last post by Technician1002
Mon Oct 05, 2009 11:26 pm
Fnord's Piston Hybrid 2.0

Last post by Chernobyl
Replies: 48
by Fnord » Thu Jul 19, 2007 6:42 pm
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Well, here it is (finally) .

Fnord's piston hybrid, version 2.0 - aka. Thunderstruck

(sorry dialup users)

Prepare for reading.
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Commence...

Last post

okay, every time i come on this website, I MUST look at this gun. I have never made a hybrid myself, however i just love this design because i looks...
48 Replies

40985 Views

Last post by Chernobyl
Fri Oct 02, 2009 9:46 pm
Burst Disk Projectile

Last post by jackssmirkingrevenge
Replies: 13
by kenbo0422 » Tue Sep 29, 2009 12:50 pm

First post

For a lack of a better term, here is what I call a burst disk projectile. It replaces the burst disk on any system where the projectile can be either...

Last post

Actually, I like your idea with the detent, better. Its so simple, its brilliant! :oops: The O-rings would give you minimal friction, enough to allow...

13 Replies

3856 Views

Last post by jackssmirkingrevenge
Thu Oct 01, 2009 1:33 am
Look what I got/macro for dummies

Last post by MrCrowley
Replies: 19
by MrCrowley » Wed Sep 23, 2009 11:36 pm
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32mm steel ball bearing, weighs about 130grams. Just need a decent barrel and more importantly, target. I'm thinking a fridge, with heaps of wood...

Last post

Well, Crowley, we're waiting for those damage macropics...
When are you going to shoot
Few weeks away yet. Need a new copper barrel specially for...
19 Replies

4041 Views

Last post by MrCrowley
Fri Sep 25, 2009 3:22 pm
Hybrid Ranting.....

Last post by GalFisk
Replies: 28
by Hubb » Wed Sep 16, 2009 3:29 pm
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I know that this is a little off the wall, but it is something that I have wondered about ever since I discovered what a hybrid is and how it...

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I guess the valve is the main reason why hybrids are named the way they are. From that perspective, a good hybrid must have a valve that opens as the...
28 Replies

6802 Views

Last post by GalFisk
Mon Sep 21, 2009 6:05 am
Just a couple fun pics to make the hybrid guys drool....

Last post by psycix
Replies: 12
by D_Hall » Thu Sep 17, 2009 8:26 pm

First post

Nothing too exciting. Just some pipe and a high pressure burst disc. :D

Last post

I'll take that one then, how much did you say it was? :)

12 Replies

3849 Views

Last post by psycix
Fri Sep 18, 2009 5:43 am
Machined high mix hybrid build log

Last post by jackssmirkingrevenge
Replies: 7
by Dave_424 » Wed Sep 16, 2009 3:36 pm

First post

Hey, Just started the machining of my hybrid.

It had an 18mm ID. 1/4 threads at the rear and 1/2 threads at the front.

I know the end is flat,...

Last post

Looking good :)

I have a .22 rifled barrel I will be shooting pellets from, Looking for some BIG numbers

Get yourself some heavy slug style...

7 Replies

3422 Views

Last post by jackssmirkingrevenge
Thu Sep 17, 2009 3:33 am
My Hybrid Daydreams...

Last post by Ragnarok
Replies: 9
by THUNDERLORD » Tue Sep 15, 2009 11:22 am

First post

So, I've been day dreaming up a Hybrid design:

The fuel (propane or mapp) enters the chamber at rear,
It pushes a (light weight) piston forward...

Last post

Note that a well-oiled fridge compressor puts out a nice oil vapour, lubing your piston.
I'm reasonably sure something else may have been well oiled...

9 Replies

6218 Views

Last post by Ragnarok
Wed Sep 16, 2009 7:26 am
Hybrid cartridge material

Last post by ramses
Replies: 30
by auxiliary » Sat Aug 29, 2009 12:21 am
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I am dreaming up ideas of making hybrid cartridges that will hopefully be shot semi-automatically. My question is, can I get away with using 1/2 PVC...

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That seems doable, but your cartridges would get shorter after every shot. Although you could brag about having the first jacketed projectiles.
30 Replies

12916 Views

Last post by ramses
Sun Sep 13, 2009 2:19 pm
Bolt action piston build

Last post by daccel
Replies: 3
by daccel » Sat Sep 05, 2009 10:56 pm

First post

Ok, at the moment this is running as a pneumatic, because I couldn't find a piezo and didn't feel like running out to the store, but it's so close to...

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Thanks guys. Just a correction, the piston has a 3/8 port, but then the hole into the breech tube is 1/4 . Might port the latter out a bit and smooth...

3 Replies

2511 Views

Last post by daccel
Sun Sep 06, 2009 11:06 am
SO much for chamber fans

Last post by Moonbogg
Replies: 22
by Moonbogg » Mon Aug 31, 2009 6:17 pm
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Well....this is after a single shot. Brand new 60mm fan, no fire occured. I am guessing it somehow got destroyed just from the pressure, but how?...

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You mentioned the fan was mounted in the rear, I assume that means the end closest to the barrel breach. If that is the case, I can see how you would...
22 Replies

7871 Views

Last post by Moonbogg
Mon Aug 31, 2009 10:16 pm
QEV Hybrid Questions

Last post by psycix
Replies: 4
by PVC Arsenal 17 » Sat Aug 29, 2009 2:28 pm

First post

I've been building spudguns long enough, it's about time I finally try out hybrids.

For my first, I'd like to build something very small and...

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You can always replace the diaphragm by something sturdier. Or just try out how much the original one can handle.

Keep crankin the mix up until it...

4 Replies

2526 Views

Last post by psycix
Sun Aug 30, 2009 1:35 pm
Hybrid questions.

Last post by deathbyDWV
Replies: 3
by deathbyDWV » Thu Aug 27, 2009 4:30 pm

First post

A few questions on my new hybrid.

I am currently building a hybrid with a chamber of two 8 inch pieces of 2 inch sch 40 galvanized steel pipe.

The...

Last post

Alright. Sounds good. :D Thanks for the help. This thing will be awesome!!! :D :twisted: :D :twisted: :D

3 Replies

1951 Views

Last post by deathbyDWV
Thu Aug 27, 2009 4:54 pm
Enlightening Hybrid Concept!

Last post by THUNDERLORD
Replies: 4
by THUNDERLORD » Thu Aug 27, 2009 1:37 am

First post

So I posted an idea in Colty's Great Thread here But didn't explain it's layout very well and not many spudders will read it or reply on it...

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it think it would be simpler to use off the shelf timing circuits to do the trick... in fact, I have one of them right in front of me right now
:)...

4 Replies

2796 Views

Last post by THUNDERLORD
Thu Aug 27, 2009 4:43 am
A few first hybrid thoughts

Last post by inonickname
Replies: 17
by niglch » Mon Aug 17, 2009 10:15 pm
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I recently became interested in building a hybrid (at least at some point in the future) but I still have a few issues floating around in my head...

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since it means I don't need any epoxy.

How in gods name is that a good thing? I like epoxy..

Reliable, strong and aesthetically invisible if used...
17 Replies

404942 Views

Last post by inonickname
Sun Aug 23, 2009 12:12 am
Vera suffers a setback. :(

Last post by D_Hall
Replies: 19
by D_Hall » Wed Aug 12, 2009 12:52 am
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I was in a meeting with my boss's boss (and others) today and the topic of Vera came up. There was some light-hearted discussion about what the first...

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And yesterday Vera suffered another setback. :evil:

I'm not entirely sure what happened, but there's been a policy change. Our welders are no...
19 Replies

6911 Views

Last post by D_Hall
Sat Aug 15, 2009 2:05 pm
It has a name!

Last post by jackssmirkingrevenge
Replies: 44
by D_Hall » Mon Jul 06, 2009 8:55 pm
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Those of you who are Firefly fans will recognize the name....

Vera.

But a gun can't just have a name like you or me. That seems to be against the...

Last post

Taking post-natal depression to all new levels

I think you'll find it's post-natal elevation :D
44 Replies

14275 Views

Last post by jackssmirkingrevenge
Tue Aug 11, 2009 1:54 am
MAPP//PRO Question

Last post by MrPed
Replies: 16
by MrPed » Thu Aug 06, 2009 8:54 am
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Does anyone on the forum have experience with MAPP//PRO, it is different than MAPP supposedly it is propylene. Also, does anyone know the fuel:air...

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Jimmy101 thank you very very much for that valuable info!! :D
Yeah, I was looking for that article, but I was looking under the hybrid section, I...
16 Replies

6214 Views

Last post by MrPed
Thu Aug 06, 2009 4:42 pm

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