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Of barrels and pellets... 
PostForum: Airgun Smithing   Posted: Wed Jun 10, 2009 11:42 pm   Subject: Of barrels and pellets...
turtlemann14
 
Replies: 38
Views: 26070
you would have to have something like the carriage and bed on a lath

as for the fittings, can't you just put one on the axis of the bit?

something like a banjo bolt? (but not clamped at the ends ...
 
Of barrels and pellets... 
PostForum: Airgun Smithing   Posted: Wed Jun 03, 2009 4:40 pm   Subject: Of barrels and pellets...
turtlemann14
 
Replies: 38
Views: 26070
9x20"...

is that big enough? i would think that you would need a 36" bed at least

boring bar? they make them, but i have never seem one so long

maybe drill and ream?
 
high power HPA 
PostForum: Airgun Smithing   Posted: Wed Jun 03, 2009 4:25 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
yea, i am probably going to have a valve after the compressor (air ram) because it woudl not build up fast enough to get full force behind the pellet

(i think that is what you were basically saying ...
 
high power HPA 
PostForum: Airgun Smithing   Posted: Tue Jun 02, 2009 6:52 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
the other end in the "ram" would be used to compress air
it would not touch the pellet

and yes, the gas spring kinda sounds like it would be close
 
high power HPA 
PostForum: Airgun Smithing   Posted: Tue Jun 02, 2009 6:46 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
that is basically what i am doing, but the piston is not in contact with the pellet

(i don't think the piston is moving that fast, that is just the force it puts out)
 
high power HPA 
PostForum: Airgun Smithing   Posted: Tue Jun 02, 2009 6:32 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
should be about 613 pounds of force driving the nail (2.5 inch piston)

little over a quarter ton
 
high power HPA 
PostForum: Airgun Smithing   Posted: Tue Jun 02, 2009 6:03 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
actually it was an Epson LQ-2550 Smile
 
high power HPA 
PostForum: Airgun Smithing   Posted: Tue Jun 02, 2009 5:49 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
its very messy i know... i hope it gives you some ides to what i was going to do
http://i134.photobucket.com/albums/q102/turtlemann14/garage%20work/100_2742.jpg

this is a valve out of a pneumatic ...
 
AirGunHome Shooting Competition Fortnight 87 
PostForum: Target Shooting: Casual, Fun and Competition   Posted: Tue Jun 02, 2009 4:15 pm   Subject: AirGunHome Shooting Competition Fortnight 87
turtlemann14
 
Replies: 14
Views: 7553
lol this is a joke for my gun

its hard for me to hit the paper

let alone hit the target i am aiming for

guess that is what i get for try it with a smooth bore bb spray gun lol
 
high power HPA 
PostForum: Airgun Smithing   Posted: Mon Jun 01, 2009 2:57 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
you fill the vessel with water of hydraulic fluid because it does not compress

that means once ruptured there will be nothing rushing out, like air that has to decompress
 
high power HPA 
PostForum: Airgun Smithing   Posted: Fri May 29, 2009 6:26 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
if i can't but a barrel then i would have to make one (and a "button", tool steel here i come)


hydro testing would be Farly easy... fill the gun up with hydraulic fluid and apply pressu ...
 
high power HPA 
PostForum: Airgun Smithing   Posted: Fri May 29, 2009 5:22 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
really, what i want to do is get close to or match or even surpass a .22 bullet

if used for game i don't think it would be used for anything bigger than a coyote

for pinking i will stick with th ...
 
high power HPA 
PostForum: Airgun Smithing   Posted: Fri May 29, 2009 4:04 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
the piston is two sided... there are faces on both sides one side has a large surface area and the other side has a small surface area

if you take 125 psi and apply it to a surface area of 7.0685 i ...
 
high power HPA 
PostForum: Airgun Smithing   Posted: Fri May 29, 2009 2:49 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
agreed, the more complex the more chances for something to go wrong


but i think you would be amassed at how simple this design is (this is why i am wondering if it will work)

and i would say t ...
 
high power HPA 
PostForum: Airgun Smithing   Posted: Fri May 29, 2009 2:17 pm   Subject: high power HPA
turtlemann14
 
Replies: 52
Views: 37961
the ci is the amount of highly compressed air i will have


the piston in the gun would use surface area to boost 125 psi to 3500psi (at the sacrifice of volume)

there will be no tank other than ...
 
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