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M.H.I.S Piston powerd golfballer.

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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M.H.I.S Piston powerd golfballer.

Unread postAuthor: rna_duelers » Thu Oct 05, 2006 3:38 am

mehhh coudlnt be botherd with.Maybe some other time i might update..The barrel is 1.9 meters the chamber is 1 meter and the piston is madefrom a air fresher can with come bog and tape for sizing in the chamber its piloted with a sprinkler valve it shoots large marbles very well but i havent tested a golfball yet.

UPDATE:The chamber is made of 50mm class 18 and the barrel is 40mm class 18 i had to shave the inside of the 50x40 recuder to allow the 40mm barrel to pass through into the T.
The filling system is filled with a 1/4 ball valve and male disconect and my samuel MKII valve si the pilot i also have a extension pipe for the vavle but i preffer the blow gun mounted flush on the sprinkler valve.The piston is verylight and thus makes the opening time faster it weighs in at a whopping 50 grams!When this gun is fired its extremely loud and if fired in confined spaces causes slight hearing loss and ringing.The piston can be removed for servicing or replacement which is easy as it is made from a spray can.I plan to make a barrel suport for the chamebr and barrel when i get the chance.
So what do you think of my gun?Comment what you think!
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Attachments
anti9.JPG
Looking down the gun,sorry for the darkness i dont no why it happend the room was well lit.
anti9.JPG (18.4 KiB) Viewed 3723 times
anti7.JPG
Close up of the whole unit.
anti6.JPG
A back view wiht out the piston and fireing system.
anti5.JPG
Piston,bumper,filling and samuel MKII valve.
anti4.JPG
The bumper,made from a half section of a tennis ball wiht the fur removed and a hole in the centre for venting.
anti4.JPG (17.79 KiB) Viewed 3723 times
anti3.JPG
Closed valve.Explaines itself.
anti3.JPG (11.03 KiB) Viewed 3723 times
anti2.JPG
Open valve.Were the magic happens!
anti2.JPG (9.11 KiB) Viewed 3723 times
anti1.JPG
This is my piston,very light and very cheap.
anti11.JPG
This is the full gun with a DVD case as size reference
Last edited by rna_duelers on Fri Mar 23, 2007 4:58 am, edited 2 times in total.
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Unread postAuthor: killagorrila99 » Thu Oct 05, 2006 3:43 am

Loverly! Damb loverly
How much?
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Last edited by killagorrila99 on Thu Oct 05, 2006 3:45 am, edited 1 time in total.
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Unread postAuthor: MrCrowley » Thu Oct 05, 2006 3:44 am

nice cannon,whats the dia of your barrel and chamber?
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Unread postAuthor: experament_u2 » Thu Oct 05, 2006 4:08 am

thats a nice gun

did u use samuel mk2 on it?
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Unread postAuthor: rna_duelers » Thu Oct 05, 2006 6:42 am

Well i was kinda pissed off when i posted it so i will add all the specs soon(like now)And yes thats samuel MKII on the beast.This is kinda like your gun mr crowley the dam buster if i am correct?
And so far this has cost about...$120 or so but i did have alot fo the parts lying around form previous guns so thats just a guess.
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Unread postAuthor: sam_516 » Thu Oct 05, 2006 7:39 am

haha samuel MKII, thats my name and you named that kool thing after me i am so astetic right now
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Unread postAuthor: MrCrowley » Thu Oct 05, 2006 2:45 pm

rna_duelers wrote:Well i was kinda pissed off when i posted it so i will add all the specs soon(like now)And yes thats samuel MKII on the beast.This is kinda like your gun mr crowley the dam buster if i am correct?
And so far this has cost about...$120 or so but i did have alot fo the parts lying around form previous guns so thats just a guess.


yeah thats what i thought but is yours a bit smaller?(the chamber and the piston housing tee)your gun, my dam buster and BtB brothers Chappy cannon are all very similar.
Chappy Cannon:http://www.spudfiles.com/forums/viewtopic.php?t=2999&
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Unread postAuthor: rna_duelers » Thu Oct 05, 2006 6:36 pm

My gun has a longer barrel and chamber but other then that...They look the same!I have never even seen this gun but i like alot.Come on people any more comments?
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Unread postAuthor: MrCrowley » Thu Oct 05, 2006 7:34 pm

rna_duelers wrote:My gun has a longer barrel and chamber but other then that...They look the same!I have never even seen this gun but i like alot.Come on people any more comments?


my chamber is 1.2m yours is 1m, well thats what you put in your psot anyway.its weird how 40mm pipe fits golf balls aye.
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Unread postAuthor: BT1969 » Thu Oct 05, 2006 8:02 pm

rna_duelers mentioned he used a modified tennis ball for his piston bumper. Has anyone here tried using a donut made from the aerosal expanding foam for a bumper? Or, even just foaming the back side of the piston (where it would impact the cap) to absorb the impact? :idea:
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Unread postAuthor: MrCrowley » Thu Oct 05, 2006 8:35 pm

i just use some rubber padding stuff, works well.
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Unread postAuthor: killagorrila99 » Fri Oct 06, 2006 7:22 am

You could use it as an anti R/C Plane gun :P Lol again, damb loverly.
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Unread postAuthor: jrrdw » Fri Oct 06, 2006 8:41 am

I had my barrel half way through my 4way, and the piston wouldn't open! I'm guessing it wasn't far enough in the pilot chamber to let the presure push on the piston face, maby it was because i used a 4way instead of a tee. Did yo7u have any problems like that at first?
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Unread postAuthor: Brian the brain » Fri Oct 06, 2006 11:19 am

Chappy has a 90mm diameter chamber 1 meter in length.
The barrel is 63 mm outside and without the extension 120 cm long.With extender it's 2.20 meters.
It uses a 3/4 ballvalve as the excaust, wich contrary to what people might think, actuates the piston faster than you can blink..
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: rna_duelers » Sat Oct 07, 2006 5:52 am

No i didnt have any problems like that but recently the piston shat itself n was bent up badly so i need a redesign it.Got msn?chat on that see if i can help with it,im goth_thugg@hotmail.com
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