Here is my attempt at a mini ,its made from x2 brass (5/8") caps,a brass (5/8") socket and has an aluminium internal (insted of 5/8" copper i used aluminium).
The barrel is solid brass tubing 2.2mm bore, and is piloted by a shrader.
The piston is made from brass tubing and is explaned in the diagram.
Any comments?
brass pocket rocket..
- Attachments
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- piston diagram,CLICK TO ENLARGE
- piston setup.jpg (24.76 KiB) Viewed 6214 times
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- mesuring up
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- full size
al-xg wrote:
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
well as for performace i havent really shot it yet,im still waiting for the epoxy to dry 
i did get a lil impatient and pressurerise it to 50psi it held and i dry fired it and it worked ,so far im very happy.
will have better power stats tommorow.
ive worked pretty hard on this project and im hopeing for good results
i did get a lil impatient and pressurerise it to 50psi it held and i dry fired it and it worked ,so far im very happy.will have better power stats tommorow.
ive worked pretty hard on this project and im hopeing for good results
al-xg wrote:
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
@qwerty
id say in the 400psi range.
id say in the 400psi range.
al-xg wrote:
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
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spudtyrrant
- Corporal
- Posts: 550
- Joined: Fri Jan 02, 2009 6:10 pm
man you are catching up with me too fast a couple months ago you were making mediocre combustions now your all the way up to high pressure piston valved cannons i got to say your really making progress 
And what on earth is jsr's failure cannon,maybe a link will clear things up..
as for performance now that the glue has dryed, is very impressive and alot louder than i thort it would be,but considering i shoot it at about 350-400psi that comes to be expected.
no real power test have been done ,altho i shot at a can about 3m away and it penetrated one side,if it was fixed im sure it would of exited the other side
as for performance now that the glue has dryed, is very impressive and alot louder than i thort it would be,but considering i shoot it at about 350-400psi that comes to be expected.
no real power test have been done ,altho i shot at a can about 3m away and it penetrated one side,if it was fixed im sure it would of exited the other side
al-xg wrote:
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
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jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 569 times
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Ditto, good jobgeardog32 wrote:i like the design, the way the piston slides over the pilot.
Epic failAnd what on earth is jsr's failure cannon,maybe a link will clear things up...
Well considering jsr had the balls to admit to a failure i guess ill share my own failure, basically stupidity rather than pushing the limits of the device.
i wanted to basically create a similar device that i posted,a mini coaxial but a servicable one,its made from an oxygen flashback arrestor,and the piston WAS a .22cal shell casing, i removed the projectile from the casing , emptyed the residual gun powder and attached a sealing face to the back of the shell, i had been building the device all day and was quiet proud of my achievments ,so i thort id celebrate with a couple of beers and a few billies, at this point in time i was quiet out of it, so with the courage juice flowing,i decided to go and finish my product,all i needed to do was weld the shrader to the fitting that screwed into the back of the flash back arrestor and it was done,aleast i thort i would of been done,
once i fired up my mapp gas torch and began to weld the shrader in the fitting within seconds the residual gun powder that had stuck to the internal walls of the casing blew up inside the arrestor,deforming the bullet casing and melting my sealing face i attached to it. FUKKKKKKEN IDIOT
if only i had removed the piston
so this resulted in me making the one posted in revenge for my failure,but i suppose its not completly screwed i just need to get another shrader and piston for it ,but maybe another day
i wanted to basically create a similar device that i posted,a mini coaxial but a servicable one,its made from an oxygen flashback arrestor,and the piston WAS a .22cal shell casing, i removed the projectile from the casing , emptyed the residual gun powder and attached a sealing face to the back of the shell, i had been building the device all day and was quiet proud of my achievments ,so i thort id celebrate with a couple of beers and a few billies, at this point in time i was quiet out of it, so with the courage juice flowing,i decided to go and finish my product,all i needed to do was weld the shrader to the fitting that screwed into the back of the flash back arrestor and it was done,aleast i thort i would of been done,
once i fired up my mapp gas torch and began to weld the shrader in the fitting within seconds the residual gun powder that had stuck to the internal walls of the casing blew up inside the arrestor,deforming the bullet casing and melting my sealing face i attached to it. FUKKKKKKEN IDIOT
if only i had removed the piston so this resulted in me making the one posted in revenge for my failure,but i suppose its not completly screwed i just need to get another shrader and piston for it ,but maybe another day
- Attachments
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- mini coax
al-xg wrote:
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
I've used various things like cutting oil, silicone lubricant, even butter
jsr wrote:
This collection of containers on your bedside table must look very intimidating to any visiting young ladies
...but hey, lube shows you care;)
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jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
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This hobby is about research and development, assessing failure is probably more important than celebrating success, so it's always good to shareFORE!!!! wrote:Well considering jsr had the balls to admit to a failure i guess ill share my own failure, basically stupidity rather than pushing the limits of the device.
In your case, glad you didn't get hurt
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clemsonguy1125
- Sergeant 5
- Posts: 1485
- Joined: Tue Jul 21, 2009 4:00 pm
- Location: East Coast
One of my mini pill bottle cannons blew up and the cap shot back and hit me in the chest, thank goodness it wasnt pointing an my face.