Combustion Cannons

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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm
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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...

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

954972 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Sparker Reference Guide

Last post by quinn whitsitt
Replies: 45
by rcman50166 » Tue Feb 05, 2008 4:19 pm
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First post

OK. Everyone always seems to know more than me in almost every topic on this site. But this is my domain! High voltage electricity is what i know...

Last post

great job how can i help the fourms
45 Replies

314746 Views

Last post by quinn whitsitt
Fri Mar 01, 2024 10:52 am

Topics

Meter and gun measurements for propane combustion.

Last post by DYI
Replies: 5
by wangpushups » Mon Oct 22, 2007 5:41 pm

First post

I know you guys get posts like this all the time but I've looked everywhere to try and get perfect measurements for my gun and I either don't...

Last post

Just do a liquid volume measurement. You won't get the volume right just by measuring the length of the meter, and unless you have a chrony and a lot...

5 Replies

1587 Views

Last post by DYI
Tue Oct 23, 2007 3:03 pm
Snap-In Schrader Valve

Last post by Thursto
Replies: 2
by Canadian Spudder » Sun Oct 21, 2007 5:07 pm

First post

Hey,
I am going to be making a removable propane meter the injects via schrader valve. The only valves I could find around me were the rubber,...

Last post

Yeah they are piss easy to mount in, on mine, i drill a 12mm hole and push the Shrader valve in from the back, and grab some pliers and pull it threw...

2 Replies

2634 Views

Last post by Thursto
Mon Oct 22, 2007 1:15 am
Can some one confirm this??

Last post by cwazy1
Replies: 7
by cwazy1 » Sun Oct 21, 2007 1:07 am

First post

So i am using burntlatke's fuel calc but im not 100% sure on how to use it. so i would love if someone could check my accuracy.

my chamber is 250...

Last post

hahah yup, so im gonna go try 43psi now. k thx

7 Replies

2418 Views

Last post by cwazy1
Sun Oct 21, 2007 12:36 pm
Burnzomatic? and other adapters??

Last post by cwazy1
Replies: 12
by cwazy1 » Sat Oct 20, 2007 9:43 pm

First post

So i build my propane meter without a burnzomatic or any other valve before the tubing. What i am worrying about is if my tubing(very thick...

Last post

ahh, okok gottcha

12 Replies

3253 Views

Last post by cwazy1
Sun Oct 21, 2007 1:00 am
Gadget Freak Case #103

Last post by mega_swordman
Replies: 1
by Hubb » Sat Oct 20, 2007 2:47 am

First post

Some of you may have seen this, some of you may not have. Check it out anyway.

Last post

Pretty neat. I think it would be cool controlling a spud cannon through a joystick. However, I think there is no substitiute for a well build rifle...

1 Replies

1220 Views

Last post by mega_swordman
Sat Oct 20, 2007 7:47 am
Spark Gaps: Some food for thought

Last post by jimmy101
Replies: 8
by Pilgrimman » Mon Oct 15, 2007 10:11 pm

First post

I have read that spark gaps that use points as opposed to flatter surfaces such as spheres tend to produce longer sparks. I am wondering if it'd be...

Last post

Yes, using a syringe needle would increase the spark length, or decrease the voltage required for a given spark length.

Instead of syringe needles I...

8 Replies

2606 Views

Last post by jimmy101
Thu Oct 18, 2007 11:49 am
Clear PolyCarb Comb. Chamber

Last post by Novacastrian
Replies: 6
by Lentamentalisk » Fri Oct 12, 2007 11:40 pm

First post

I am trying to get my hands on some Clear PolyCarb piping, and my local store only sells it in 3 x8' lengths. I would probably only use at max 2' of...

Last post

That could be rather dangerous. Acrylic is 40 times tougher than glass but when it shatters it does so like glass in very sharp pieces.
The chambers...

6 Replies

2153 Views

Last post by Novacastrian
Wed Oct 17, 2007 2:51 am
20psi metered propane

Last post by Dornep
Replies: 18
by MortarArmy » Fri Sep 28, 2007 6:31 pm
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Ive got a 9 long x .5 propane meter on my current gun. Using standard propane tanks, im getting 20psi of pressure in there, which is fine for my...

Last post

LOL! I just noticed that... But thank you for pointing it out. :oops:

I never really payed much attention to the fact that 60x2=120.. This time...
18 Replies

6797 Views

Last post by Dornep
Tue Oct 16, 2007 9:24 pm
Whats the set psi in standard propane tanks??

Last post by benstern
Replies: 4
by cwazy1 » Tue Oct 16, 2007 8:38 pm

First post

What is the standard set psi in a small one time use propane tank?? i just tested my propane meter, and when i opened the first valve, the psi gauge...

Last post

Search next time or I will verbally abuse you.

4 Replies

1819 Views

Last post by benstern
Tue Oct 16, 2007 8:56 pm
Flyback circut resistor question

Last post by sandman
Replies: 6
by sandman » Mon Oct 08, 2007 8:39 pm

First post

WARNING: If do not know much about electronics then find a different topic to post in, this is for people that understand electronics well

as soon...

Last post

ok, the best i could do was a 27 ohm 1W resistor which is close to the right value, and 2.7K ohm 7W resistor which is like 10 times what it was...

6 Replies

1653 Views

Last post by sandman
Tue Oct 16, 2007 8:32 pm
Help with my homemade taser

Last post by TwitchTheAussie
Replies: 8
by Thursto » Thu Oct 11, 2007 6:54 am

First post

Can you help me with this. I brougt this from a second hand store, and it said parts only, which is ok, thats all i want, i got the circut out of it,...

Last post

I made mine different. I just soldered a wire to the capacitor and another to the battery holder, charged it up and touched the two wires. Not good...

8 Replies

4354 Views

Last post by TwitchTheAussie
Sun Oct 14, 2007 7:55 pm
Pump Action Combustion.

Last post by NewB
Replies: 3
by rna_duelers » Sun Oct 14, 2007 4:34 am

First post

I have been eyeing off the Tippmann C3 for a while now and have though,why not try and make my own little pump action marble/paintball gun.Using the...

Last post

For rna_duelers design just put your hand over the barrel when you pull the pump and take your hand off when you push it.
Also be sure that you pull...

3 Replies

2247 Views

Last post by NewB
Sun Oct 14, 2007 11:08 am
Easiest way to attach a propane tank

Last post by thespeedycicada
Replies: 6
by Canadian Spudder » Tue Oct 02, 2007 10:28 pm

First post

I am going to be adding propane to my new launcher soon, and I was wondering what everybody uses to attach the propane tank to the hose. Is it ok to...

Last post

nope link works great and if you are just going to clamp it on you should cut the end off that has the micro hole in it so the flow wont be...

6 Replies

2326 Views

Last post by thespeedycicada
Sat Oct 13, 2007 7:34 pm
LED light question?

Last post by TechnoMancer
Replies: 23
by wangpushups » Tue Oct 09, 2007 12:59 am
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I'm using a 12V fan operating it with a 9V battery and I have a green LED light that I want to install so I can tell when the fan is on. Do I need to...

Last post

they are polarised because they have a circuit inside that is a brushless motor controller for the fan because the motor actually requires at least...
23 Replies

7612 Views

Last post by TechnoMancer
Sat Oct 13, 2007 6:30 pm
Laser guidance on burnt latke question?

Last post by TurboSuper
Replies: 11
by wangpushups » Wed Oct 10, 2007 11:34 pm

First post

What the hell... I did everything and it didnt work is there a trick to this? My laser was almost exactly like the one in the pics. Does anyone...

Last post

Man, I just ripped the diode out of the laser and haphazardly connected wires to it, and then to a pair of AA batteries and a switch. Works fine....

11 Replies

3973 Views

Last post by TurboSuper
Sat Oct 13, 2007 3:14 pm
One Entry Cannon.

Last post by TurboSuper
Replies: 12
by Redcoat » Mon Oct 01, 2007 11:49 pm

First post

Hi all,

A little over a week ago I posted a topic asking about guns that you have to spray the fuel in through the same hole as the Potato gets shot...

Last post

Looks pretty cool and simple, I like :)

12 Replies

3010 Views

Last post by TurboSuper
Fri Oct 12, 2007 6:25 pm
My First Mini

Last post by BigGrib
Replies: 2
by BigGrib » Mon Oct 08, 2007 12:19 am

First post

And what a mini it is. I took the idea from the Office Gun of Destruction thread. Basically got myself a pill bottle and a bic pen, drilled a hole in...

Last post

Thanks it's just a way to pass time sitting around. It's kind of fun to sit there with your buddies and shoot spit wads out of em

2 Replies

1548 Views

Last post by BigGrib
Fri Oct 12, 2007 5:16 pm
Fourwheeler mounted Golf Ball Cannon

Last post by mark.f
Replies: 34
by Binder17 » Sun Feb 18, 2007 4:54 pm
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First post

My cannon is finally to the point of firing after about 2 months of working on it. The first shot was perfect. The only flaw so far is the length of...

Last post

It is perfectly possible to make a pneumatic water balloon launcher. There would be numerous problems to overcome, but it is always possible. Might...
34 Replies

12113 Views

Last post by mark.f
Thu Oct 11, 2007 6:41 pm
Where to buy propane regulator?

Last post by spanerman
Replies: 7
by Cooker2007 » Mon Oct 08, 2007 7:54 pm

First post

I have looked all over the internet for one and i just cant find one the will work.

Last post

depend son temp alot though, i only get 80psi here at an average 15celcius

7 Replies

3324 Views

Last post by spanerman
Thu Oct 11, 2007 2:44 pm
Fuel Injection - Help!

Last post by jimmy101
Replies: 5
by tsb » Wed Oct 10, 2007 6:44 am

First post

Hello,

I am using just a basic combustion cannon i made from sch 40 PVC Pipe.
Its C:B ratio is 1:1 and i need to insert 40cc's of gas to make it 4%...

Last post

You can measure propane like this .
Or, using a disposable butane lighter as the fuel source, like this

The links are frequently down. Try again...

5 Replies

2211 Views

Last post by jimmy101
Thu Oct 11, 2007 12:51 pm
Q.E.V. Propane Injection Prototype

Last post by BOMBOMBOMB
Replies: 10
by mark.f » Wed Oct 10, 2007 6:18 am

First post

This is my prototype for remote propane injection. I've been toying around with the idea for the past few days, and I think a Q.E.V. is the best...

Last post

cheers for that ive been linked to this site a couple of times ill have to add to favs lol
Cheers Nato

10 Replies

3217 Views

Last post by BOMBOMBOMB
Thu Oct 11, 2007 5:50 am
Need Help - First Cannon

Last post by tsb
Replies: 22
by tsb » Mon Oct 08, 2007 9:06 pm
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First post

Hey, i recently made my first cannon, it was 134cm long, and i first tried some hairspray, it got around 4 meters, i then tried some deodorant, it...

Last post

@Pete
My fan is positioned at the rear of the chamber and is blowing air out towards the end of the chamber... And unfourtunaly i do not have a...
22 Replies

5248 Views

Last post by tsb
Thu Oct 11, 2007 3:26 am
pvc or abs whats safer

Last post by wangpushups
Replies: 13
by giarc69 » Tue Oct 09, 2007 8:46 pm

First post

I just built a cannon out of abs schedule 40 pipe haven't fired it yet the guys at the hardware store said that cellular core is all they use4 spud...

Last post

ABS is safer but use PVC

13 Replies

3762 Views

Last post by wangpushups
Wed Oct 10, 2007 11:53 pm
newbie needs advice

Last post by Thegoodlife8806
Replies: 11
by WEEMAN » Tue Sep 25, 2007 5:07 pm

First post

I Am A NEWBIE any advice on some cheap combustible ignition methods???????? :oops:

Last post

To be serious and help the kid...

Often an easy, effective, but many times overlooked method would be as follows: Simply driving 2 screws into the...

11 Replies

3052 Views

Last post by Thegoodlife8806
Wed Oct 10, 2007 11:12 pm
ABS tennis ball launcher with propane

Last post by noname
Replies: 19
by spudgunnerwryyyyy » Wed Aug 29, 2007 8:10 pm
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Here is my combustion. It has a 3 ABS chamber 24 long. The chamber has 1'' female threads to accept my 2 barrels. The spark is provided by a barbecue...

Last post

The pvc is EPOXIED on to the abs reducer. According to jsr and the epoxy package and my firm believe in epoxy. It is plenty strong enough.

You...
19 Replies

8806 Views

Last post by noname
Wed Oct 10, 2007 6:05 pm

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