HomeBuilt Airgun — Done!
Finally finished my homebuilt project.
17 inch .357 barrel. 22 cubic inch tank.
This will be the first of 3 or 4 guns. I have 4 more barrels, two .25 cal, one .22, and one .223.
Now I gotta learn Anodizing.
Not quite Buba B’s quality! He’s a tough act to follow!
Mark
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Buba b:
I had a sear like airforce’s but found it to be unreliable. (maybe it was that elongated hole thing??), So I redesigned the trigger mechanism and abandoned the double trigger. Yep, no checkering, I built this grip just to get me by till I get checkering tools. The darn performance issues slowed me down for a week.
Buba your work sets the standard around here!!
I’ll be very interested in your home anodizing — Thats something I need to do also.
Mark
Thats a funny 2 weeks lol , good to see its done, im about to go through all the fustrations of valve tunning myself ,so i wish you luck 😀 .
What happened to the two triggers ? and i see the checkering has been put on hold too ! This just a time thing lol 😀
Looks good, Cygnusx should be able to help you out with the valve.
Adam:
Looks bad over the crony!
The same valve kicks out 30 gr Kodiaks @ 1050 FPS in .25 Cal.
On this gun the velocity = 700 FPS with a 65 gr round ball. Thats about 70 FPE.
700 FPS is barely usable!
Tried Hitting it with a 400 gram steel hammer and the present 175 gram aluminum Hammer. I got a big spring in there, much stronger than a stock SS.
I know the valve is opening fully, because it stuck full open twice, and dumped the tank (fixed that problem a while back).
Expected at least 120 FPE from this gun.
The barrel is short, only 17 inches????
Tried boring out the valve orface, got no change in velocity. My standard orface is .170 inch, this gun is up to .200 inch.
I got all winter to work out the valve problems, but I’am out of ideas.
I need help! Cygnus, what am I doing wrong?
Mark
That is a fine piece of work. With that valve of yours I bet it is a real cannon. Maybe Duracoat would be an option?
Whats it look like over the chrony?
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Mark here is your reward….
I hope you like it…. 😆