Custom Frame?
Anyone build a custom frame based on the air force design but addressing the weak areas, and extending the main tube for full shrouding? I have a source for the main tube, but will need to either use a slightly different trigger, sear, and grip. I have an idea in my head, but was looking for some suggestions, or direction from the ahead of the curve minds here.
Casey
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ive built lots that are similar , but changed stuff i thought was wrong , extending the tube to the muzzel and bottle , changing the barrel /hammer slide , and valve ……. basicly not the same gun:)
i just used aluminum tubing 1”od 1/8”wall for .22. made some 9mm with 1.25” tubing and 1/8 wall . its pretty straight stuff and if its not that straight you can press a muzzel end cap in and hold the breech end of the stock , then bore it out for the muzzle end of the barrel so its centered .
i probably have the trigger desgn some where
http://i37.photobucket.com/albums/e68/jezx/Picture050.jpg
I have an idea on paper but it wont go much further than that for a while.
Basically its a thick-wall carbon tube to begin with. The problem with that is machining carbon is hard to do without diamond tooling and water cooling for the tools.
I can easily make a perfectly straight tube .25″ thick on tooling anywhere from .75″ ID to 1.5″ ID with lots of in-between sizes to pick from. Internal taper over a 3 foot length would be less than .002″.
If you use a barrel riding hammer you wouldnt need to worry much about wear. Flex would be very hard to make happen.
We build Autometrix cutting table beams from carbon. Basically a square bladder-molded tube about 4″ x 73-148″ depending on the table. These things wall are less than .080″ and autometrix made a video where they placed the beam ends on blocks then drove a Humvee up unto the middle of the beam. Deflection in the center was less than a quarter inch and no damage to the beam The beam weighs abou 2 pounds.
Search UTube for Autometrix Vs Hummer and see for yourself. 😉
One day… Until then I dream about it.
2 problems
Problem 1 is tubing is not perfectly round and would need the OD turned and then bored. Now everything is concentric. Problem is with boring tubing is you can only bore so deep with out special tools.
Problem 2 is you would need to come up with a trigger setup that works.
I started a frame for a .452 I was going to build but trigger issues have stopped the project.
It doesn’t make any sense to make a frame out of tubing unless you are going to machine it and make it perfect.
I will make a frame for one of my guns but not anytime soon.
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Thank you all for the input, if only Airforce would address the issues we have brought up, and extend the “Condor SS” frame a bit more to accommodate a 24″ barrel plus the extra room for some sound reduction, that would fit the bill. However, with this new trigger I’m not sure I would want to go that way. This was just an idea, but without a solid design, then my thought of using prefab tubing as the starting base does not look like a very good idea. Too bad Air Force does not sell frame extensions made from the same extruder as the frames, thus keeping the look uniform.