Wow guys, why can't we just say, your chamber is too big, and won't yield much more power than a smaller one. He never asked about going supersonic, and now we turned a help me post into an argument about the validity of a supersonic gun. Metal is often a but more expensive, but as members have proven threaded fightings and pipe are reusable. For a first gun, just try things, have fun with it, then read the forums every day for 2 months. At the end of that time you'll understand a LOT about potato guns, and probably have a dozen designs that you're ready to build, but you gotta start somewhere.
Good luck!
Overkill?
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magnum9987
- Specialist 2
- Posts: 274
- Joined: Wed May 07, 2008 5:02 pm
Ok, lets make a new approach:
HAs anyone chronograph their gun to get subsonic speeds?
What materials where used to what dimension?
HAs anyone chronograph their gun to get subsonic speeds?
What materials where used to what dimension?
http://www.spudfiles.com/forums/viewtop ... Revolution in the absolute is not initiated by swords, guns, and bullets, but by words-
The New RobesPierre
The New RobesPierre
It amazes me how people forget about Dongfang's supersonic shot with a gun made of thin-walled plastic drainpipe. The speed of sound in a combustion launcher's chamber is high enough, you just need to make it really big with a relatively light projectile.
People have chronied their spudguns at supersonic speeds. Actually, most of the supersonic shots have been with plastic launchers - metal construction didn't gain popularity in this hobby until very recently.
My ME20H-41 can shoot supersonic, as can Killjoy's FEAR, Dumbascii's Taternator II, and one of Spudinator's hybrids (can't remember what it was called). Larda's ETG could do over Mach 3 with a light projectile, but I'm assuming that you don't have thousands of dollars to invest in capacitors, and it isn't what most people would think of as a "spudgun" anyway.
People have chronied their spudguns at supersonic speeds. Actually, most of the supersonic shots have been with plastic launchers - metal construction didn't gain popularity in this hobby until very recently.
My ME20H-41 can shoot supersonic, as can Killjoy's FEAR, Dumbascii's Taternator II, and one of Spudinator's hybrids (can't remember what it was called). Larda's ETG could do over Mach 3 with a light projectile, but I'm assuming that you don't have thousands of dollars to invest in capacitors, and it isn't what most people would think of as a "spudgun" anyway.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
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magnum9987
- Specialist 2
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- Joined: Wed May 07, 2008 5:02 pm
What schedule .5in pipe would be best for a marble.
http://www.spudfiles.com/forums/viewtop ... Revolution in the absolute is not initiated by swords, guns, and bullets, but by words-
The New RobesPierre
The New RobesPierre
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bigbob12345
- Staff Sergeant
- Posts: 1516
- Joined: Sat Dec 01, 2007 9:13 am
- Location: Mercer Island,Washington
magnum9987 wrote:What schedule .5in pipe would be best for a marble.
type M copper is best
but if you have small marbles then sch40pvc works, and if you have big marbles then 1/2in sdr21 works good.
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SpudFarm
- First Sergeant 3
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- Joined: Sat Nov 04, 2006 9:39 am
- Location: Norway Trondheim area
i did with my hybrid.magnum9987 wrote:Ok, lets make a new approach:
HAs anyone chronograph their gun to get subsonic speeds?
What materials where used to what dimension?
look in the showcase section, the first hybrid i posted.
"Made in France"
- A spud gun insurance.
- A spud gun insurance.
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magnum9987
- Specialist 2
- Posts: 274
- Joined: Wed May 07, 2008 5:02 pm
Is the fit tight, bigbob?
http://www.spudfiles.com/forums/viewtop ... Revolution in the absolute is not initiated by swords, guns, and bullets, but by words-
The New RobesPierre
The New RobesPierre