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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First post

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

1435947 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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First post

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

841985 Views

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

Topics

strange hybrid reading

Last post by SpudFarm
Replies: 42
by SpudFarm » Mon Jul 07, 2008 12:27 pm
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First post

hey i got Larda to fire every time now. (it is from now on called UPGBH10x)
on 3x it had a average from 650fps to 1400fps depending on the disk.
i...

Last post

hey you have a pretty decent cap now DYI mabe you can make some tests?

and now that i have my universal fuel and air meter i may consider to do the...
42 Replies

9203 Views

Last post by SpudFarm
Fri Jul 25, 2008 11:07 am
The highest possible mix for a hybrid?

Last post by SpudFarm
Replies: 12
by Larda » Thu Jul 24, 2008 4:51 pm

First post

How high mix hybrids do you think its possible to build?
Can you go above, lets say, 15x, 25x, 50x 75x, 100x or even higher?
To clarify i am talking...

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but if you want to go onto a like 1000x isnt it just to messure and calculate the amount of liquid propane needed for that shot and then have a flow...

12 Replies

3912 Views

Last post by SpudFarm
Fri Jul 25, 2008 9:10 am
more hybrid questions

Last post by ramses
Replies: 12
by ramses » Wed Jul 16, 2008 4:45 pm

First post

I will hopefully be making a piston hybrid soon, and have some questions.

my hopeful, made up specs:
-3 x12 steel pipe for chamber EDIT: now...

Last post

Would the conduit be NPT threaded? EDIT: I just checked wikipedia and it says that EMT (thinwall conduit) isn't threaded, it's connected with clamp...

12 Replies

3177 Views

Last post by ramses
Fri Jul 18, 2008 10:29 am
Hybrid Chamber

Last post by Pilgrimman
Replies: 23
by biggsauce » Wed Jul 09, 2008 10:30 pm
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First post

So here is an idea for what I want to use as the chamber for my hybrid. Its an expansion chamber from a natural gas copressor. The compressor's...

Last post

SpudMonster wrote:
I take it you haven't seen a 150,000 PSI valve then?

Wow. I'd like to see what makes that sort of pressure, let alone a valve...
23 Replies

7473 Views

Last post by Pilgrimman
Sun Jul 13, 2008 10:50 am
first hybrid- a few questions

Last post by psycix
Replies: 28
by burgerace69 » Sat Jul 05, 2008 3:55 pm
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I am deciding to make a hybrid with a piston instead of a burst cap and i had a few questions.
1) With a PVC schedual 40 gun how high should I take...

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Think of it as assisted natural selection - By helping this guy (and countless other n00bs) build a dangerous device that he doesn't understand,...
28 Replies

8238 Views

Last post by psycix
Fri Jul 11, 2008 12:44 pm
teflon tape???

Last post by littlebro05
Replies: 23
by burgerace69 » Sun Jul 06, 2008 2:49 pm
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First post

will teflon tape work to seal a steel pipe used for a hybrid?

Last post

You're really trying to do something that is bound to fail. If you tried to use o-rings, it would simply shoot off. Theres nothing holding it there....
23 Replies

9559 Views

Last post by littlebro05
Tue Jul 08, 2008 7:11 pm
Hammer Couplings and Shim Stock

Last post by biggsauce
Replies: 9
by biggsauce » Mon Jul 07, 2008 3:38 pm

First post

Well I caught the hybrid itch and I'm in the process of determining exactly which parts I need.

I'm looking at using either flanges or a hammer...

Last post

Whoa baby those things are pricey! 6 is a lot large for burst disk usage. A 6 disk, burst pressure of 700 psi, those suckers would have to be mondo...

9 Replies

2487 Views

Last post by biggsauce
Mon Jul 07, 2008 10:59 pm
Pressure in a corner

Last post by SpudFarm
Replies: 1
by biggsauce » Sat Jul 05, 2008 3:18 pm

First post

Does anyone take into consideration the effects of pressure in a corner when building a hybrid cannon? After all, you don't see any production...

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hmm, my gun har 2 and 1 end plates so i am not worried.
but you are right.. it is a really good idea

1 Replies

1243 Views

Last post by SpudFarm
Sat Jul 05, 2008 3:22 pm
Hybrid Cartrige Design

Last post by noob of noobs
Replies: 2
by noob of noobs » Fri Jul 04, 2008 4:11 pm

First post

For the past month or so, I’ve been thinking up a basic design for a hybrid cartridge, and have incubated the fallowing design. After researching in...

Last post

Alright, I just changed it. I probably wouldn't have read it either. :wink:

2 Replies

1659 Views

Last post by noob of noobs
Sat Jul 05, 2008 1:34 pm
1/4" TEE hybrid question

Last post by SpudFarm
Replies: 7
by SpudFarm » Sat Jun 28, 2008 4:10 am

First post

hi, while working on Larda it can be quite lonely when i just looks on parts and don't shoot anything.

so i decided to make a tiny hybrid with a...

Last post

the shot on the vid was a spitball :D

7 Replies

2186 Views

Last post by SpudFarm
Wed Jul 02, 2008 8:51 am
SpudFarm's mini hybrid (vid)

Last post by SpudFarm
Replies: 16
by SpudFarm » Sun Jun 29, 2008 7:25 am
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attention: this is a small gun i threw together to test the meter before i go full scale. but it is a fun little toy.

Chamber: two 1/2 hydraulic...

Last post

hmm how do i describe it?

i can say that it is louder than my pneumatil at 150psi. (if i don't use burst disk)
it hurts your ears because it is so...
16 Replies

9526 Views

Last post by SpudFarm
Tue Jul 01, 2008 2:45 am
sergeantspud's Beastly Hybrid

Last post by SpudUke5
Replies: 18
by sergeantspud2 » Sun Jun 22, 2008 10:58 pm
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First post

Alright well heres a small story about the life of this cannon even though I know that 9 out of 10 of you guys will not read this and go to the...

Last post

So this is what happens when i come back from Florida (Disney World)
*Forgot to mention, sorry)

This for some reason makes me want to build one, but...
18 Replies

11011 Views

Last post by SpudUke5
Sun Jun 29, 2008 6:59 pm
i'm blowing up my hybrid

Last post by frankrede
Replies: 23
by SpudFarm » Thu Jun 26, 2008 11:40 am
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hey, i think everyone remember my tiny hybrid?

i have decided to get a test done for the spudding people, so i am going to send my hybrid to Larda...

Last post

Flinger: it will uncover the bare truth of the SCH40 welded steel.

Jack: i can do the PVC test myself, the reason i send steel to larda is my air...
23 Replies

8928 Views

Last post by frankrede
Sun Jun 29, 2008 11:17 am
Brplatz and Sddds13 new hybrid

Last post by sddds13
Replies: 50
by brplatz » Sun Jun 22, 2008 11:23 am
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First post

This hybrid we just started recently and are not quite done with the camera flash dumped through the ignition coil part. But everything seems to come...

Last post

Sorry no pictures or video today we had minor issues with the wiring system and we are working it out soon. Expect pictures by next week. So far tho...
50 Replies

20446 Views

Last post by sddds13
Thu Jun 26, 2008 8:19 pm
HGDT 0.5 online

Last post by ramses
Replies: 49
by D_Hall » Sun May 25, 2008 7:25 pm
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First post

All new combustion model.

Improved heat transfer model.

Unfortuantely, new file format as well so it won't just load any previous files you may...

Last post

What you are saying makes sense now. If the pressure rose, it would be like a 1.02x hybrid or something random like that. :oops:

The main problem...
49 Replies

20658 Views

Last post by ramses
Wed Jun 25, 2008 3:06 pm
Safety of malleable iron

Last post by SpudFarm
Replies: 42
by tyrant_bb » Sat Jun 21, 2008 11:58 am
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Well before I ask that, I want to know if black iron is safe to use in a hybrid. Not sure what kind of iron, it just says black iron nipple.

Then...
42 Replies

11313 Views

Last post by SpudFarm
Wed Jun 25, 2008 11:20 am
What I've been working on

Last post by Fnord
Replies: 12
by Fnord » Mon Jun 23, 2008 5:51 pm

First post

Seeing as I haven't posted anything interesting in a while, I guess I'll slip a little.

This is a 2 porting, steel inline piston valve I made in my...

Last post

...Umm, you are joking... right?

Or do you like entering orbit every time you fire?

Keep in mind the power will be limited by the how heavy it...

12 Replies

4309 Views

Last post by Fnord
Tue Jun 24, 2008 6:39 pm
Ignition?

Last post by MaxuS the 2nd
Replies: 9
by SNDM » Sat Jun 21, 2008 2:18 pm

First post

First of all let me introduce my project.

It is a low power copper hybrid.
(Low power because I have no idea to the strength of the copper. It is...

Last post

That I am.

The Far North, Scotland, as highway signs would tell me.

Same, except I'm from the South East of England.

9 Replies

2758 Views

Last post by MaxuS the 2nd
Tue Jun 24, 2008 6:04 am
hybrid peaks test.

Last post by jimmy101
Replies: 32
by SpudFarm » Sun Jun 08, 2008 3:10 pm
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First post

i am planning on doing some peak readings on Larda up to 10x mix.

the question's i have is:

how do i get the pressure in a gauge but not out? there...

Last post

And then there's the issue of recording their output at sufficiently high data rates to actually make use of their output....and that's even more...
32 Replies

8459 Views

Last post by jimmy101
Wed Jun 11, 2008 12:18 pm
assorted hybrid questions

Last post by ramses
Replies: 26
by ramses » Thu May 29, 2008 8:07 pm
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Hi, I have a few questions about hybrid construction.

1) I was looking at using a 3 diameter steel chamber of undetermined length. McMaster doesn't...

Last post

right now, i was going to use around 500psi, which it tells me around 800 psi peak

What the hell does that mean? If you fuel to 500psi, I can...
26 Replies

7177 Views

Last post by ramses
Thu Jun 05, 2008 1:11 pm
Yet more flame acceleration ponderings....

Last post by jimmy101
Replies: 14
by D_Hall » Thu May 22, 2008 11:50 pm

First post

Today I was looking at Jimmy's Technical Spudgun page ( LINK ). I was looking for calibration data for HGDT's new combustion model. In any event, I...

Last post

Ya, I get that the fuel consumption rate changes if the unburned fuel is compressed by unburned fuel. If the unburned fuel is compressed by...

14 Replies

5747 Views

Last post by jimmy101
Sat May 31, 2008 11:28 am
chamber pressure meter question

Last post by SpudFarm
Replies: 6
by SpudFarm » Wed May 28, 2008 4:15 pm

First post

hey i threw (yes i did it just to show th shape of it) a diagram togehter.
it is of a meter design i want to use on Larda

a question is if you can...

Last post

i am going to look at that option

6 Replies

2742 Views

Last post by SpudFarm
Thu May 29, 2008 6:18 am
fueling biohazard

Last post by SpudFarm
Replies: 32
by pat123 » Thu May 15, 2008 4:43 pm
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last week when drex came over we couldn't get biohazard to shoot. just by roughly measuring the size i got the amount of propane needed to be 45psi....

Last post

not others.. other - and you are right on that
32 Replies

8635 Views

Last post by SpudFarm
Wed May 28, 2008 4:10 pm
More HGDT crap (HGDT vs. Latke, the rematch)

Last post by SpudFarm
Replies: 7
by D_Hall » Mon May 26, 2008 10:46 pm

First post

For those who aren't allergic to reading, I would invite ya'll to visit the HGDT site (see link in my sig), go to the Design Library, and check out...

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i will get to you with some results on PM on the GB hybrid when it is done.

7 Replies

4829 Views

Last post by SpudFarm
Wed May 28, 2008 9:00 am
On Flow-Based Fuel Metering for Hybrids/Combustions

Last post by D_Hall
Replies: 2
by mark.f » Mon May 26, 2008 12:41 pm

First post

I put this in the hybrid section, but the principle could also be used for atmospheric combustion launchers as well.

Basically, the way I see it,...

Last post

I'm not sure I follow what you're proposing but I will say that there's an 8X hybrid where I work that basically functions thus:

1) Air pressure and...

2 Replies

2778 Views

Last post by D_Hall
Mon May 26, 2008 2:00 pm

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