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

1112511 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

718887 Views

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

Topics

Flame propogation rate of propane

Last post by jimmy101
Replies: 12
by D_Hall » Sat Feb 23, 2008 2:14 pm

First post

I've been doing some reading on propane flame propogation rate.

On his website Jimmy101 has some experimental data (sort of) as well as an equation...

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Sorry to sidetrack the discussion of the model, but I'm not so sure the projectile starts to move early on in the launch sequence...

Initial...

12 Replies

4794 Views

Last post by jimmy101
Mon Feb 25, 2008 2:20 pm
Dieseling...

Last post by D_Hall
Replies: 15
by D_Hall » Tue Feb 19, 2008 8:23 pm
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Just having some thoughts.....

OK, in a closed chamber a fire starts. As the freshly burned gases try to expand they compress the cold (unburned)...

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I don't want to intrude on a topic that I'm not too familiar with, but doesn't it also matter somewhat the rate at which the pressure is risen? Or...
15 Replies

7117 Views

Last post by D_Hall
Sun Feb 24, 2008 9:44 pm
Placement of Spark Gap

Last post by SpudFarm
Replies: 5
by frocksie » Sun Feb 24, 2008 9:45 am

First post

I am thinking about making a hybrid in the near future, and I have a question on the safest place to put the spark gap.

The chamber will likely be...

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yeah you dont need rapid combustion in a hybrid since it wont go until the burst pressure of the disk is reached : )

5 Replies

3176 Views

Last post by SpudFarm
Sun Feb 24, 2008 1:23 pm
hybrid pellet gun(not my creation)

Last post by DYI
Replies: 5
by brother361 » Sat Feb 23, 2008 1:36 pm

First post

i found this video on youtube earlier and i thought it was interesting so i just posted it.

i believe its a hybrid pellet gun its wicked

Last post

I might actually make something like this at some point if I can get a hold of some acetylene. With a thick aluminum piston tube, a resealable...

5 Replies

3225 Views

Last post by DYI
Sun Feb 24, 2008 11:06 am
handheld hybrid (2.0)

Last post by SpudFarm
Replies: 32
by SpudFarm » Thu Feb 21, 2008 5:16 pm
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specs:
chamber: 8 of 2 galvanized pipe. little bigger with all the couplings
barrel: 18mm copper barrel 6feet long for small marbles.
(defect)...

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yeah i do have real fun with it, it has so nice sound ;)

and the marble was crushed comletely by the first layer so it didnt go all the way. mabe a...
32 Replies

18786 Views

Last post by SpudFarm
Sun Feb 24, 2008 7:35 am
A couple thoughts on hybrid design...

Last post by jimmy101
Replies: 20
by D_Hall » Fri Feb 15, 2008 9:27 pm
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As some of ya'll may be aware, I'm currently in the middle of a redesign of The Pipe Dream. Why? Because it may actually get built. The design I had...

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My point being... OK, it's safe to use the first time. I fire the gun. Is it safe to use again? It didn't CAUSE the explosion, but did all it's seals...
20 Replies

40212 Views

Last post by jimmy101
Wed Feb 20, 2008 2:24 pm
A few questions

Last post by Jeeperforlife
Replies: 13
by Jeeperforlife » Fri Jan 25, 2008 12:35 pm

First post

I am planning on building a hybrid late winter early spring once I sell one of my Jeeps. I have a few questions about basic design.

Is there a...

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@Jeeper:

If you're looking at my original design for ideas, you'll have better luck with a barrel sealing piston valve like version 2 (which is...

13 Replies

7214 Views

Last post by Jeeperforlife
Tue Feb 19, 2008 10:05 pm
hybrid problem: propane doesn't pressurize

Last post by noob of noobs
Replies: 13
by noob of noobs » Sun Feb 10, 2008 12:35 pm

First post

Okay, I just finished my first hybrid cannon for my science fair project at school, and tried testing it yesterday. It didn't work.
I tried filling...

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Sorry I haven't been able to keep up with the thread. I have a lot of stuff on my plate. I'll try to test it indoors sometime soon, and then go from...

13 Replies

7940 Views

Last post by noob of noobs
Thu Feb 14, 2008 1:06 am
Revamped Hybrid

Last post by spanerman
Replies: 10
by SpudBlaster15 » Sun Feb 03, 2008 6:58 pm

First post

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse...

Last post

^if it was frozen it would :shock:

10 Replies

5921 Views

Last post by spanerman
Sun Feb 10, 2008 5:18 pm
Hybrid Design

Last post by Lentamentalisk
Replies: 19
by Lentamentalisk » Sat Jan 26, 2008 3:21 am
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This is the hybrid that I am designing for and end of year science project.

there is actually a valve between the O2 and the rest, not shown in...

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even better, i have some steel tea tins with easily removable lids that I drilled burner holes into, that then burns incredibly well. The plus side...
19 Replies

6757 Views

Last post by Lentamentalisk
Sun Feb 10, 2008 11:56 am
Hybrid Q's From Crowley

Last post by MrCrowley
Replies: 25
by MrCrowley » Thu Jan 31, 2008 2:27 am
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Starting to get bored and thought I might make a hybrid to kick school of with a bang :)

Anyway, just got a few Q's for the more knowledgeable....

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wow, are rugby championships the same time of year as american football superbowls, i'm assuming that joke was brought up because it has to do with...
25 Replies

5097 Views

Last post by MrCrowley
Sat Feb 02, 2008 5:15 am
interesting ddt paper.

Last post by thespeedycicada
Replies: 2
by thespeedycicada » Sat Jan 26, 2008 1:38 pm

First post

i found this while looking at schelkin spirals it has graphs,info,illustrations,a picture showing an apparatus for experimenting with ddt,and even a...

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the part i found that was my fav was frame X that showed the explosions occurring just ahead of the flame front that apparently initiate ddt it was...

2 Replies

2182 Views

Last post by thespeedycicada
Sun Jan 27, 2008 4:32 pm
CpTn_lAw's hybrid w/ pics

Last post by CpTn_lAw
Replies: 46
by CpTn_lAw » Mon Dec 17, 2007 1:54 pm
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Hey everybody!! hope you're enjoying your time as christmas comes!! Today was a great day (at the exception that i caught a bad cold...) as i drove...

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Hey everybody! sorry to let you without infos about the development but i've been pretty busy with the exams; which i passed fortunately! ^^
I will...
46 Replies

15611 Views

Last post by CpTn_lAw
Sat Jan 26, 2008 10:12 am
DDT Runup Distance Question

Last post by SpudBlaster15
Replies: 10
by DYI » Thu Jan 24, 2008 8:04 pm

First post

My question is, as the title states, on the subject of DDT run up distances.

Specifically, I wanted to know what the DDT run up distance is in a...

Last post

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse...

10 Replies

3719 Views

Last post by SpudBlaster15
Sat Jan 26, 2008 1:45 am
SB15's hybrid

Last post by DYI
Replies: 46
by SpudBlaster15 » Sun Jun 17, 2007 10:12 pm
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse...

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That comment was made a while before your 11x test _Fnord. Unless you're actually trying to achieve detonation, it is very difficult to do so with...
46 Replies

18501 Views

Last post by DYI
Fri Jan 18, 2008 11:37 am
Ignition Diagram?

Last post by jimmy101
Replies: 30
by Isomer » Thu Jan 10, 2008 10:53 pm
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So...i've been messing around with some T pins, a couple of wires, and a 9v battery. I've gotten some nice sparks but im in need of something with...

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Jimmy, I don't like your pessimism. If everyone thought like you, we'd still be in the dark ages.
And I don't like folks asking for help and saying...
30 Replies

12801 Views

Last post by jimmy101
Mon Jan 14, 2008 11:37 am
Power of X to Psi Conversion

Last post by jimmy101
Replies: 11
by Isomer » Tue Jan 08, 2008 11:35 pm

First post

Just wondering what certain X's are equivalent to in psi
1x:
2x:
3x:
4x:
5x:
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8x:
I am forever thankful for your time

Last post

Killjoy's numbers look pretty close. They are off a bit but more than accurate enough for spuding.

The numbers are the GasEq calculated peak...

11 Replies

4564 Views

Last post by jimmy101
Thu Jan 10, 2008 12:39 pm
New/old hybrid just about finished

Last post by rna_duelers
Replies: 9
by Spudinator » Mon Jan 07, 2008 3:48 pm

First post

Hey folk, just droppin in to say I'm still here, and I haven't quit spudguns lol. Spudding runs in ups and downs, you love it, its boring, you love...

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Go for Gold,and chuck it on the stock for sure I think you should invest in the clamps every 20mm or so,but try not to make it ugly as sin.

Will...

9 Replies

3499 Views

Last post by rna_duelers
Tue Jan 08, 2008 2:54 am
Air Fittings and Propane

Last post by Isomer
Replies: 2
by Isomer » Mon Jan 07, 2008 10:45 pm

First post

I have a Air Regulator from some previous projects, my question is whether or not it would work with propane.

thx in advance

Hyperlinked by MrC

Last post

thank you sir, only 999 more problems to solve lol, jk.
time to start

2 Replies

1718 Views

Last post by Isomer
Mon Jan 07, 2008 10:54 pm
Forced Diesel

Last post by Spitfire
Replies: 15
by FeLeX » Mon Dec 31, 2007 6:00 pm
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Check this vid out and tell me if you guys think its safe.

Last post

take it from me, Drilled hole in chamber... BAD IDEA!
15 Replies

6404 Views

Last post by Spitfire
Mon Jan 07, 2008 4:06 pm
Injection Psi

Last post by DYI
Replies: 12
by Isomer » Fri Jan 04, 2008 10:05 pm

First post

I understand most of the main principles behind a hybrid but i still have a few questions that I have yet to figure out. First of all, let me get...

Last post

Ah, thanks for clearing that up.

If you injected the amount of propane needed for 10ci into a 10ci air filled, airtight chamber, you would have a...

12 Replies

3496 Views

Last post by DYI
Sun Jan 06, 2008 10:02 am
Ignition

Last post by Novacastrian
Replies: 10
by Isomer » Sat Jan 05, 2008 2:08 am

First post

My question is mainly about the spark gap contacts . Is the best way to setup a spark gap to drill two holes and insert two conducters (im thinking...

Last post

Can schrader valves handle the pressure?

Yes they can, i use schrader valves on both my Hybrids :)

10 Replies

4326 Views

Last post by Novacastrian
Sun Jan 06, 2008 1:11 am
hybrid airsoft

Last post by SpudFarm
Replies: 11
by SpudFarm » Tue Jan 01, 2008 7:16 pm

First post

i have finally got the parts to my hybrid just missing the propane meter. then i suddenly wanted a bb gun so (if it is safe) i will put a barrel on...

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but i can do that with the 1 barrel but want a single or riflel :D then i could probably get a scope on it and play sniper! xD

11 Replies

4310 Views

Last post by SpudFarm
Fri Jan 04, 2008 3:18 pm
The Brass Bruiser

Last post by sniperjosh
Replies: 155
by Novacastrian » Wed Nov 21, 2007 2:28 am
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This is a Mini Hybrid that i made today, it is not operational yet although it has been used as a burst disc combustion and burst disc pneumatic.
The...

Last post

wow, im impressed. I love the chamber, the layout looks similar to the Hybrid i made :P (JAUSH). Man that looks clean as, well done.

I love the...
155 Replies

47950 Views

Last post by sniperjosh
Wed Jan 02, 2008 4:38 am
spark consistency

Last post by SpudFarm
Replies: 17
by carter » Sat Dec 29, 2007 12:00 am
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I have been looking into building a hybrid. i currently have a pneumatic marble gun, have build a 200psi 3/8 spud launcher using all galv piping....

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on the hybrid you need a propane meter and if you got a good meter so you get right fuel air mix it will fire every time.
17 Replies

5319 Views

Last post by SpudFarm
Tue Jan 01, 2008 8:06 pm

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