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

976694 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

651790 Views

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

Topics

2" car silencer on hybrid.

Last post by SpudFarm
Replies: 11
by SpudFarm » Mon Apr 21, 2008 4:10 pm

First post

i am planning to hook up a car silencer to my hybrid when i saw how loud DYI's hybrid was at 3x and i will have a much larger chamber and 10x :shock:...

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nah i stick with noise.. bang and cover it up to talk to the cops :P

11 Replies

4005 Views

Last post by SpudFarm
Tue Apr 22, 2008 3:47 pm
another hgdt question

Last post by JDP12
Replies: 10
by pat123 » Sat Apr 19, 2008 10:15 pm

First post

look at the chamber temperature is that right? over 3500 degrees fahrenheit :shock:

and what is chamber burnout?

Last post

2 things: 1) what is ignition number? number of spark gaps?

2) why is there a blue line as well? Whenever i run it i only get a red line

10 Replies

5070 Views

Last post by JDP12
Sun Apr 20, 2008 7:12 pm
Camlock Question

Last post by Hubb
Replies: 3
by Hubb » Fri Apr 18, 2008 4:44 pm

First post

Fellas, I want to upgrade my hybrid. Most of the upgrades are pretty basic but there is one upgrade I would like to do that I'm not too familiar...

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Thanks, guys. I was thinking that they wouldn't be able to support, but was not sure. Is there another alternative to using a union?

3 Replies

1514 Views

Last post by Hubb
Sat Apr 19, 2008 7:02 am
Spudgun Calculator Database

Last post by Hubb
Replies: 4
by VH_man » Sat Apr 12, 2008 7:06 am

First post

Well, i was searching through the forum, and there seems to be ALOT of different hybrid meter pipe/pressure calculators that people use. I think it...

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Here is my calculator.

4 Replies

3840 Views

Last post by Hubb
Tue Apr 15, 2008 7:24 pm
I need somebody's facts

Last post by jimmy101
Replies: 15
by miskaman » Sat Apr 12, 2008 7:46 pm
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My dad believes that if I use propane or MAPP gas in a hybrid or even a simple combustion (PVC or steel or aluminum), and ignite it, the whole gun...

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You might dig up a copy of the GQ article on Joel (the previous owner of spudtech) here's a link.

Propane or MAPP combustion in a closed chamber, in...
15 Replies

6274 Views

Last post by jimmy101
Sun Apr 13, 2008 4:34 pm
Aluminum

Last post by pat123
Replies: 18
by Modderxtrordanare » Mon Mar 03, 2008 7:51 pm
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A few questions,

1. Is aluminum something worth making my next hybrid out of?
2. Am I better off (and/or safer off) using something like stainless...

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Yeah the threaded sch 40 steel is probably the easiest to work with. check out HCMP in my sig for fueling.

edit: just make a normal meter attached...
18 Replies

7779 Views

Last post by pat123
Fri Apr 11, 2008 3:58 pm
Burst disk material

Last post by SpudFarm
Replies: 15
by sergeantspud2 » Mon Apr 07, 2008 1:04 pm
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I looked in the wiki... and searched the forum and couldnt find info on burst disk material.

I have a hybrid very near to completion just need to...

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soda bottle plastic do not burst it slips out and in the barrel :)
15 Replies

7294 Views

Last post by SpudFarm
Fri Apr 11, 2008 1:12 pm
A question about metering pipes...

Last post by DYI
Replies: 4
by D_Hall » Thu Apr 10, 2008 10:49 pm

First post

Do people use metering pipes for additional air or do they just pressurize directly from their air source?

If they use metering pipes, is it the...

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There are a few incidences that come to mind of this being used, but both were metering pure O 2 . Spudblaster's oxy/MAPP hybrid, and Dumbascii's...

4 Replies

1818 Views

Last post by DYI
Fri Apr 11, 2008 10:37 am
New hybrid design

Last post by Jared Haehnel
Replies: 16
by pat123 » Wed Apr 09, 2008 12:48 pm
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My friend gave some air tanks from the fire department. Every few years they have to get new ones. their operating pressure is 2000 psi. my other...

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I wonder at what PSI preignition would occur with an air propane mix?
16 Replies

5711 Views

Last post by Jared Haehnel
Wed Apr 09, 2008 3:54 pm
building stock for gun

Last post by SPG
Replies: 25
by pat123 » Mon Apr 07, 2008 6:27 pm
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I want to build a stock for my gun. does anyone have an easy way to make one. I have almost no way to work on wood other than a saw. this is the gun...

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Or of you're any good at all with fibreglass you could make a fibre-glass foam-cored stock.

For that you obviously need fibreglass, and resin and...
25 Replies

6724 Views

Last post by SPG
Wed Apr 09, 2008 6:01 am
First Hybrid

Last post by bigbob12345
Replies: 20
by rp181 » Mon Apr 07, 2008 6:46 pm
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I started making my first hybrid with just things i find, (i live in a neighbor hood with alot of construction going on). Rightnow, i have a pressure...

Last post

It is not nessesarry
what you you would do is open one(propane enters) and close that one. then the other one (dumps the propane into the chamber)...
20 Replies

4977 Views

Last post by bigbob12345
Mon Apr 07, 2008 10:37 pm
insulating spark plug from chamber?

Last post by JDP12
Replies: 13
by JDP12 » Sat Apr 05, 2008 9:03 pm

First post

obviously, i need a way to insulate my homemade spark plug from the steel chamber so that the charge does not get dispersed to my hand. (don't want a...

Last post

k thanks for the information guys

13 Replies

2987 Views

Last post by JDP12
Sun Apr 06, 2008 12:52 pm
another question on piston hybrid.

Last post by Killjoy
Replies: 10
by pat123 » Sat Apr 05, 2008 11:51 am

First post

how would i put the small pipe in the tee? would I just screw the barrel in half way and screw the pipe the piston seals against in from the other...

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I built a piston valve hybrid (yet to post, still has issues). But I built the valve in a 2 steel tee and then threaded a 2 long 1 pipe nipple into...

10 Replies

3441 Views

Last post by Killjoy
Sun Apr 06, 2008 2:05 am
piston hybrid, relief valve?

Last post by Jared Haehnel
Replies: 24
by pat123 » Thu Apr 03, 2008 3:07 pm
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I have been trying to design a piston for my hybrid. I was wondering if I could use a relief valve. it would hold in the pressure until combustion...

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1000 PSI is a lot of pressure think about the blow back on a rifle the force of the expanding gas is more then enough to cycle the action.....

We...
24 Replies

7102 Views

Last post by Jared Haehnel
Sat Apr 05, 2008 8:24 am
Hybrid WIP.

Last post by Necrosis
Replies: 33
by SpeedyFerrite » Sat Mar 29, 2008 8:37 am
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I'm building a hybrid that's 35 mm in diameter with 5 mm thick walls, The thing is aluminium, what will be the highest mix I could use safely?

Last post

Death to electronics!
33 Replies

10362 Views

Last post by Necrosis
Sat Apr 05, 2008 8:06 am
Measureed VS Metered Propane (obviously in Hybrid)

Last post by shiftyguy
Replies: 5
by shiftyguy » Fri Mar 28, 2008 8:39 am

First post

I am making a new Hybrid and i am going to use Measured propane with a Low pressure gauge, since if you add propane into a sealed chamber the...

Last post

I gathered my information from SpudBlaster15 discussion on Fuling Hybrid 101

5 Replies

2475 Views

Last post by shiftyguy
Thu Apr 03, 2008 9:04 am
Alright, I'll tip my hand a bit...

Last post by sniperjosh
Replies: 62
by D_Hall » Fri Mar 28, 2008 12:19 am
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Obviously I've been asking lots of weird questions. I've flat out stated that I'm working on a modeling package for combustions/hybrids. Right now...

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Hahaha, how frustrating. I still havent done any good testing yet with HGDT and the chrony, when i get a chance ill post my results.
62 Replies

21219 Views

Last post by sniperjosh
Wed Apr 02, 2008 1:35 am
Where to place ignition?

Last post by STHORNE
Replies: 17
by xzenir » Tue Apr 01, 2008 9:17 am
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hey guys, i'm building a hybrid and I was wondering what the best place could be for an igniter.
Tapped in the chamber is not an option, since I...

Last post

lol, yeah...sorry bout that xzenir.
17 Replies

5164 Views

Last post by STHORNE
Tue Apr 01, 2008 10:55 am
Co2, hybrid.

Last post by spudman029
Replies: 13
by elitesniper » Sat Mar 29, 2008 12:46 am

First post

Is it alright if i use a co2 cartridge as a hybrid chamber, seeing that it its made to hold pressure, but just want to know if its safe.

Last post

You could buy a carbon fiber paintball tank. I used to play tournament paintball and our tanks held 3000-4500 psi of compressed air.

13 Replies

3787 Views

Last post by spudman029
Mon Mar 31, 2008 11:53 am
Plans, what do you think? EDIT added pictures

Last post by SpudFarm
Replies: 15
by Jeeperforlife » Tue Mar 11, 2008 8:00 pm
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I have layed low for a few weeks wile I have been working and planning my gun. I will build my first hybrid this weekend and I am wondering what you...

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lol DYI :P
my hybrid probably gets bigger and i know you can beat me :D
15 Replies

8579 Views

Last post by SpudFarm
Mon Mar 31, 2008 10:02 am
Liquid Propane Leak

Last post by starman
Replies: 4
by pat123 » Wed Mar 26, 2008 6:31 pm

First post

I was shooting my hybrid for the first time today. it worked a few times and then it messed up. I put the 20 psi in my meter then opened the meter...

Last post

Try keeping the propane tank upright and lower than the gun itself. I have this trouble (liquifying) sometimes with my advanced combustion doing a...

4 Replies

1911 Views

Last post by starman
Sat Mar 29, 2008 1:20 am
DDT question

Last post by DYI
Replies: 3
by SpudFarm » Fri Mar 28, 2008 5:41 am

First post

i think my original topic is out on date now so i make a new one.

i think i am going to ask larda make the endcap on the back really long so the...

Last post

Unless you have several metres of unburned fuel between ignition points, you needn't worry. DDT runup isn't a whole lot shorter at 10x than it is at...

3 Replies

1464 Views

Last post by DYI
Fri Mar 28, 2008 6:58 pm
Hybrid Questions

Last post by SpudFarm
Replies: 14
by spudman029 » Thu Mar 27, 2008 12:04 pm

First post

It seems that these days, most hybrids are being made out of stainless steel or something similar. In general, metal. Back in the day everyone made...

Last post

haha i started thinking when i saw that i had maked a wood combustion :P

14 Replies

3309 Views

Last post by SpudFarm
Fri Mar 28, 2008 2:32 pm
EHVH Mk 1-(warning large pictures)

Last post by reaper613
Replies: 61
by frankrede » Tue Nov 13, 2007 7:38 pm
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Extreme High Velocity Hybrid
This is my latest hybrid, it is made of steel, with 1/4 npt threads and a 1 3000 psi steel union. It is all welded with...

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I'm guessing over 10kpsi in adiabatic conditions. Dammit, now you've got me wanting to build a 20x oxy/MAPP hybrid...

oxy/mapp hybrids are a lot...
61 Replies

21269 Views

Last post by reaper613
Fri Mar 28, 2008 1:34 pm
The Hubbrid

Last post by SpudFarm
Replies: 12
by Hubb » Wed Mar 26, 2008 8:40 pm

First post

Like the name?

This is my first hybrid launcher, thanks to this site. It's nothing fancy, but it is my first and I am proud of it.

I've not taken...

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i will love if/when you come back with upgrades :)

like a damage video/pics and some other interesting stuff..
of some reason this is one of the...

12 Replies

5905 Views

Last post by SpudFarm
Fri Mar 28, 2008 5:36 am

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