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Toilet Paper?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Toilet Paper?

Unread postAuthor: jerb » Wed Oct 18, 2006 11:52 pm

OK heres the plan, I have a nice Solenoid comming (off an older firetruck for their sirens) rated to my specifications with nice flow.

I need to launch a Toilet paper roll(s) but Im not sure how much push I'll need to get them out of the barrel:

heres my setup:

2 older SCBA tanks pressurized to 2200 PSI
Copper tubing to a rather heavy duty regulator (decent flow) down to 140 PSI
Flex tubing (1/2") to a 4" steel barrel (8-12 inches long)

Failing that I will be using 4-8 Propane tanks filled to 140 PSI (they're rated to 250 PSI FYI) to the same setup (minus the regulator)

I think that either setup will have sufficient volume/pressure to launch a TP roll.... is it safe to assume this?

now heres my other question... how does one go about shooting TP?

I was thinking I would use 2 peices of cardboard cut to 4" circles with a 4.125" neoprene (stuff wetsuits are made from) gasket in between the cardboard circles behind the TP roll, then unroll a few feet of TP off the roll and lightly bunch it underneath the roll so when it fires it creates drag on the tail, spinning the roll. will this work?
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Unread postAuthor: SquishY » Thu Oct 19, 2006 1:07 am

When we used to shoot TP rolls we used an inside cap thingy(looks like an endcap but fits perfect inside the pipe, what purpose they serve for actual plumbing I have no clue). If you cant find these just stuff the hole with crumpled paper and hope for the best.
Oh and are you using comb. or pneu. If pneu just just the unrolled paper tail to close it up some.
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Unread postAuthor: KVINCEO » Thu Oct 19, 2006 2:13 pm

i made one, what you have should be more than enough to launch it. and also just cut some plastic the size of the barrel for a wad, or i have heard to plug the inside of the roll with foam.
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Unread postAuthor: SquishY » Thu Oct 19, 2006 2:30 pm

Ohh that expandable foam stuff? I bet that would be good for it, it could even be used to create reusuable sabots.
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'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
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Unread postAuthor: jerb » Thu Oct 19, 2006 4:53 pm

I have a neoprene disk already (I got rolls of the stuff), it does a great job as wadding (or atleast it looks like it will.


this launcher is only being used once, so I just want to make sure that I'll have enough force and volume to push the toilet paper up
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Unread postAuthor: frankrede » Thu Oct 19, 2006 7:48 pm

Hmm, so your are going to have it setup for multiple shots?
Thats cool.
Have a fun halloween.
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Unread postAuthor: Viper » Fri Oct 27, 2006 7:49 pm

why would you only want to shoot it once, Shoot a bunch of houses and piss your neighbors off!!!!
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Unread postAuthor: singularity » Fri Oct 27, 2006 11:07 pm

there is one thing i was wondering about firing tp if you were using an average axe/hairspair powered cannon with a 1.5' 4" camber about how far would it go?
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: kyle1292 » Thu Nov 02, 2006 9:23 pm

ive shot toilet paper rolls out of my 1" barrel...just mod a dixie cup and place it over the end of the roll it works everytime
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