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

976678 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

651772 Views

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

Topics

Does 6x + a 20 foot barrel = Supersonic?

Last post by jimmy101
Replies: 26
by noname » Fri Aug 17, 2007 2:10 pm
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Just trying to get confirmation on this, because I'm pretty sure the gun is shooting supersonic but have no way of telling for sure. GGDT predicts...

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Hi, Jimmy,

Heck, with big ammo you could just get a pair solar cells (or even CDS photocells) for the detectors.

Do you know how slow CDSs and...
26 Replies

7832 Views

Last post by jimmy101
Sat Sep 01, 2007 1:32 pm
Oxy/Fuel hybrid

Last post by SpudBlaster15
Replies: 10
by SpudBlaster15 » Wed Aug 29, 2007 12:31 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

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

10 Replies

3517 Views

Last post by SpudBlaster15
Thu Aug 30, 2007 11:29 am
The Dangers of a PVC hybrid

Last post by frankrede
Replies: 15
by noname » Sun Aug 26, 2007 10:19 pm
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In my opinion, PVC hybrids are pretty much time bombs, just waiting to go off. This was about the 30th shot, and only at a 2x mixture, but apparently...

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Either that or switch to remote firing, from at least 20 feet away. I'd say limit your mixture to 1.5x, or 2x occasionally. Or just use it as a...
15 Replies

6143 Views

Last post by frankrede
Mon Aug 27, 2007 6:25 pm
Supersonic?

Last post by DYI
Replies: 63
by noname » Sat Jun 02, 2007 8:43 pm
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Well, I've been trying different types of high pressure burst discs lately. My gun stopped working as a hybrid, no idea why. I have my meter length...

Last post

Burst disks can open in under .5ms, that's pretty damn fast.
The only iris valves that I have seen are meant to control the flow of powdered solids,...
63 Replies

19989 Views

Last post by DYI
Sun Aug 26, 2007 11:45 am
Taternator II Damage Pics

Last post by joannaardway
Replies: 1
by Dumbascii » Sat Aug 25, 2007 5:01 pm

First post

I finally had a chance to wreck something for the camera. This was a sturdy box made from heavy 13/16 plywood. Operating in hybrid mode, conservative...

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Very impressive, that's a nice big mess.

So, checking the other topic for a weight, that's closing on 1000J of energy. This cannon of yours will...

1 Replies

3212 Views

Last post by joannaardway
Sat Aug 25, 2007 5:13 pm
Motorized tripod for Taternator II

Last post by Dumbascii
Replies: 11
by Dumbascii » Sun Aug 19, 2007 8:06 pm

First post

This tripod was built by fellow spudder and robot builder Fred . Features motors for elevation and windage. Much lighter and smaller than the wooden...

Last post

Wow, sweet!! It is manually controlled, right? Not roboticly? It better not be, because that is what I am doing!
I just noticed your fine print -...

11 Replies

5215 Views

Last post by Dumbascii
Thu Aug 23, 2007 6:53 pm
9x mix and beyond Pneumatic cilinder

Last post by CpTn_lAw
Replies: 57
by CannonBall » Tue Jun 19, 2007 8:09 am
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Hi guys.. Ive been able to get a pneumatic cilinder from my work.
it can hold 5000 bars burst pressure is 7250 bar.
im gone do a 9x mix and more.
Im...

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DDT occurs constantly in turbojet engines (turbo reactors). EGV is approx 1400 km/h in a little model one, and higher in normal sized aircrafts.
no...
57 Replies

17954 Views

Last post by CpTn_lAw
Wed Aug 22, 2007 5:18 pm
Simple piston valve hybrid idea - did anyone do it?

Last post by darkmilk
Replies: 4
by dongfang » Sun Aug 19, 2007 6:02 am

First post

Hi,

I thought of this hybrid:

Take a reinforced standard piston valve pneumatic. Add a thin pushrod through the end of the valve: It is pushed by...

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i had thought of something like that before, only, my idea would be using a pop off valve on the piston tee, instead of the pilot valve so when you...

4 Replies

2318 Views

Last post by darkmilk
Tue Aug 21, 2007 4:53 pm
My 1st try

Last post by Novacastrian
Replies: 11
by Rock » Thu Aug 16, 2007 5:06 am

First post

It was a strange coincidence that i began building this thing.
-Found an old fire extinguisher an wanted to do something with it.
-Found out that it...

Last post

Very nice i likey alot.
Nice to see someone taking a shot that isn't point blank!
Well done.

11 Replies

4745 Views

Last post by Novacastrian
Sun Aug 19, 2007 9:41 pm
ETC hybrid

Last post by Intel Xeon
Replies: 9
by windshrike » Fri Aug 17, 2007 9:33 am

First post

This isnt a 'has anyone tried this thread?' b/c those always end up 'you can be the first'. This is a thread simply to get an idea that will...

Last post

Now, I'm no physicist, but does not a large capacitance in a capacitor equal a large current at discharge?

9 Replies

3150 Views

Last post by Intel Xeon
Sun Aug 19, 2007 2:24 pm
Metal union sealing

Last post by spanerman
Replies: 7
by spanerman » Sat Aug 18, 2007 8:51 am

First post

Hi guys, i have a 3/4 steel union in my hybrid...ive only used bicycle iner-tubes which seem to be self sealing but i cant seem to get coke cans to...

Last post

ok thanks...i made a rubber gasket seals perfect:)

7 Replies

2934 Views

Last post by spanerman
Sat Aug 18, 2007 2:11 pm
Regulator help

Last post by noname
Replies: 7
by iPaintball » Wed Aug 15, 2007 10:26 am

First post

I'm building a hybrid and I can't seem to find a good regulator for my propane meter. I have seen ones with what looks like a yellow knob on top, and...

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I've never seen or been inside any Harbor Freight stores. I got it at a local scrapyard.

7 Replies

3081 Views

Last post by noname
Thu Aug 16, 2007 11:07 am
CO2 tank hybrid, question about fittings.

Last post by pyrogeek
Replies: 6
by pyrogeek » Sun Aug 12, 2007 12:54 am

First post

After building a couple combustions, a pneumatic and a few minis, I am looking at finally getting into hybrids...partially so I can go to school and...

Last post

Yes, that is basicly what Tannerite is. Ammonium nitrate, ammonium chlorate, aluminum and a small amount of something zirconium. ...don't ask. And...

6 Replies

3096 Views

Last post by pyrogeek
Mon Aug 13, 2007 4:52 am
Sam's Hybrid Plans H.V.S-1

Last post by spanerman
Replies: 59
by spanerman » Thu Jul 12, 2007 7:52 am
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Well heres my plans, the chamber is a 6inch long 1.5inch pipe nipple...it has a meterd propane injection system, a HVSG and spark plug ignition and i...

Last post

lmao.....no-one ever speak of this again :P
59 Replies

19318 Views

Last post by spanerman
Thu Aug 09, 2007 4:52 pm
Tylers Insane Hybrid ( Video )

Last post by SpudBlaster15
Replies: 32
by tylerthetatertosser » Fri Jul 06, 2007 9:55 pm
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I just finished my hybrid about 30 mins ago and now i am posting it. The chamber is 4 inch pipe nipple the union is 3/4 inch and the meter is gen 1...

Last post

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

17533 Views

Last post by SpudBlaster15
Thu Aug 09, 2007 11:38 am
Ignition Problems

Last post by noname
Replies: 19
by noname » Fri Jul 27, 2007 8:31 pm
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I've redone my steel hybrid, to get the spark in a better place, and so it's more compact and easier to use. I made a new propane meter, and now it...

Last post

Alright, I got it shooting today! I shortened the propane meter by taking out the 1/4 x 4 nipple connecting the street elbow to the ball valve and...
19 Replies

7297 Views

Last post by noname
Tue Aug 07, 2007 7:39 pm
Camera flash on metal hybrid

Last post by dongfang
Replies: 18
by CannonBall » Sun Jul 15, 2007 4:28 pm
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Hey. i want to change my ignition source for a camera flash ignition deu a more powerful spark.
How do i connect a cameraflash to a sparkplug on a...

Last post

Hey,

I know several TV repairmen having gotten themselves zapped by flybacks; they are all alive and well to tell the tale. For some reason, they...
18 Replies

7281 Views

Last post by dongfang
Fri Aug 03, 2007 3:05 pm
hybrid questions...

Last post by frankrede
Replies: 29
by spudthug » Thu May 31, 2007 7:57 pm
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ok well i am building my first hybrid (yay! :D ) andmy freind and i *found* a huge fire extinguisher in his basement... we are using it for my...

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I got a spark plug for a motor scooter and I used a die of slightly smaller threads and threaded my spark plug to a normal thread type and just used...
29 Replies

10659 Views

Last post by frankrede
Tue Jul 31, 2007 7:46 pm
Burst Disc Material

Last post by CannonBall
Replies: 4
by Scotty » Tue Jul 31, 2007 7:25 am

First post

Hey guys, I think i've found the sweetest material ever, Teflon Sheet 8)
The sheet I use is only .3mm thick but can withstand around 70-80 P.S.I....

Last post

Use plastic sandwich baggy's wich u can buy... like 100 for 40 euro cent fold them 3 times into a sqaure and they can hold 6.3 bar.. fold 4 times and...

4 Replies

3254 Views

Last post by CannonBall
Tue Jul 31, 2007 3:39 pm
My new Hybrid

Last post by frankrede
Replies: 35
by frankrede » Thu Jul 26, 2007 9:31 pm
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My dad has let up a little and let me build me something new, as long as it wasn't a large combustion.
So I build a new hybrid.
It currently lacks a...

Last post

It is, Its posted.
But I can't get it to fire, at a 1x mix, maybe my spark gap is too small.
It really is small.
35 Replies

10452 Views

Last post by frankrede
Mon Jul 30, 2007 5:48 pm
Hi's mew iron hybrid

Last post by frankrede
Replies: 28
by hi » Thu Mar 22, 2007 9:20 pm
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After about 2 months, my hybrid is finally done. Its is constructed of SCH40 iron and SCH80 fittings. The chamber is (1) 2'' nipple that is 12'' long...

Last post

Try and keep the chamber all one size of pipe, shorten the chamber to union nipple to a close one.
Have it so that when you inject air all the excess...
28 Replies

10962 Views

Last post by frankrede
Mon Jul 30, 2007 3:24 pm
Chilled Air Induction.

Last post by dongfang
Replies: 40
by rna_duelers » Sun Jun 17, 2007 3:33 am
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When air is compressed it heats up.When the air is heated up there are less oxygen molecules present in a certain area,so cooling the air going into...

Last post

Hi,

One question is, how much use will it really be to put chilled induction on a spud launcher? The gas in the chamber would warm up to ambient...
40 Replies

12706 Views

Last post by dongfang
Sat Jul 28, 2007 5:48 pm
My C:B is it correct?

Last post by boilingleadbath
Replies: 4
by CannonBall » Mon Jul 23, 2007 3:27 pm

First post

Hi my hybrid chamber has a volume of 535 ml my barrel is 2 meters long 22mm wide.. radius is 11mm
Chamber cubic inches = 32.64
Barrel1 cubic inches...

Last post

Your are correct that a larger diameter barrel will give you a higher muzzle energy. (under the fast-combustion model, assuming the flow isn't...

4 Replies

2536 Views

Last post by boilingleadbath
Mon Jul 23, 2007 8:58 pm
STSH Hybrid

Last post by spudthug
Replies: 6
by spudthug » Thu Jul 19, 2007 2:06 pm

First post

Just to keep you guys updated on my progress i have taken a picture of my hybrid so far.. i need to buy a propane tank, drill a hole for a spark...

Last post

hehe..

sb15 why wouldnt i just use my bb sniper i have now and fit a pellet barrel to it....

6 Replies

3204 Views

Last post by spudthug
Thu Jul 19, 2007 6:39 pm
DevilStick (converted to Gen I and with 10' barrel)

Last post by SpudBlaster15
Replies: 12
by noname » Wed Jul 18, 2007 1:57 pm

First post

I converted it to Gen I for the meet and got a 10 foot barrel. Whoopie.

Last post

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

12 Replies

5155 Views

Last post by SpudBlaster15
Thu Jul 19, 2007 1:02 pm

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