For those that have seen my last spud gun, Im starting to do some really ghetto lookin stuff, But i dont care, It preforms well, Thats all i need ANYWAYS http://img32.imageshack.us/img32/7425/img00310j.jpg http://img14.imageshack.us/img14/2528/img00313d.jpg http://img708.imageshack.us/img708/6727/im...

Alrighty, Im leading the problem to be my igniter or my fuel I got a grill igniter, And its spark isn't big at all(How big should it be?), When i fire it ( It fires rarely) It makes a puffy fart noise and sends what I'm shooting maybe 10 feet, Doesn't sound like a normal combustion, And doesnt act l...

Should i glue my gun with PVC cement for a combustion? Will the PVC cement fumes inside the chamber ignite as well as the fuel? I was thinking about letting it air out but i don't know if i need to

I remember seeing a way you can make an ignitor from a bic lighter, Can anyone elaborate? I couldnt find much when i searched, I swore i saw something like that somewhere

Thanks, What exactly do you mean by repeatability? and is there any sort of guide or somthing on the propane thing?

And how powerful will it be? Ima shoot oak bullets with a homemade rifled barrel Any distance/speed estimates?

The bigger pvc is 1 and 1/2" and the smaller is 3/4", and im going with the simple piezo igniter + hairspray = boom

And maybe axe deodorant

Question 1: How much danger is involved with combustion? I'm not going to be dumb with it...But if its not a beginner thing then I'm not going at it ,I've already made a pneumatic and I'm looking for something i can run without an air compressor, and I'm looking for something simple... Question 2: B...

Alright, Problem solved, Thanks...I'll do it right next time.

Old dowel/nail system...And i breech load it using the uhh...Ball valve breech loader thingy

And actually, I might have just realized my own problem after looking at the image, It seems alot better in person...better off using a smoothbore

When i fire my gun, Pneumatic pumped at about 70-120 psi..With a rifled barrel, When i shoot a potato out of it, It goes CRAZY, It ill go in any direction. Could it have somthing to do with sloppy rifling? Or rifling at all? If i could get this to go streight, Then itll go a long ways, Maybe.... Its...

Uhh, About 90 - 120 psi to answer the questions...

And i feel very special about my award! Now if only i had a speech to give

Piston valve, Heard that twice....How would i go on doing that?

Lol, Sorry for messing up the pics, Got them fixed now

And it is really ghetto xD


Edited by jrrdw, no more double posting, use the edit button.

Pneumatic, single shot, pvc wonder Cant give you much on the specs, Being i kinda just threw it all together, But it preforms rather well Pictars! http://img63.imageshack.us/img63/9185/img00289r.jpg http://img3.imageshack.us/img3/8088/img00290n.jpg http://img535.imageshack.us/img535/1986/img00291c.j...

I made a spudgun, i'm shooting AA batterys wrapped in tape, Im wondering if i can cut grooves in the tape to simulate rifling, Or any other way to rifle it through the projectile. Edit: I dont care how i do it, I just want the battery to spin without some big machinery to rifle it with, If theres a ...