Gargoyle Barrels and Bushings - Page 12

Siress · 02-12-2012, 11:36 PM

I admit that the guy that bored mine out wasn't a machinist as he claimed to be (and many a paintball player gave him positive reviews...sigh) and left a LOT of machine marks during the boring. This made the issue of the thin wall even worse. However, think about the theoretical maximum thickness:

0.875 OD
0.753+ ID
(0.875-.753)*.5= possible wall thickness of 0.061"

Now, factor in the trapezoidal thread: ACME 0.860-1/14
Assuming no undercutting is done (I don't have phantom barrel atm), which there should be, then we have the following:

[(0.860-1/14)-.753]*.5= a wall thickness under the thread of 0.0177857"

Now that's pretty damn thin. I'm not comfortable with that. But wait, there's more!

There's that o-ring groove, isn't there... Someone put some calipers on there and report back.

splattttttt · 02-13-2012, 07:38 AM

the thinnest OD result from boring for a freak insert I've ever seen is with Spyder barrels. Never seen one break though.

02-12-2012, 11:36 PM	#111 (permalink)
Siress Bigger Balls Join Date: Sep 2006 Location: Atlanta, GA	I admit that the guy that bored mine out wasn't a machinist as he claimed to be (and many a paintball player gave him positive reviews...sigh) and left a LOT of machine marks during the boring. This made the issue of the thin wall even worse. However, think about the theoretical maximum thickness: 0.875 OD 0.753+ ID (0.875-.753).5= possible wall thickness of 0.061" Now, factor in the trapezoidal thread: ACME 0.860-1/14 Assuming no undercutting is done (I don't have phantom barrel atm), which there should be, then we have the following: [(0.860-1/14)-.753].5= a wall thickness under the thread of 0.0177857" Now that's pretty damn thin. I'm not comfortable with that. But wait, there's more! There's that o-ring groove, isn't there... Someone put some calipers on there and report back. __________________ Feedback: MCB, SCP, PHOG, PBN, and My eBay account

02-13-2012, 07:38 AM	#112 (permalink)
splattttttt starts off small at first Join Date: Apr 2006 Location: Bean Town, U.S.A.	the thinnest OD result from boring for a freak insert I've ever seen is with Spyder barrels. Never seen one break though. __________________ My Feed Back my MCB album and my youtube channel ((( watch this PUMP DOCUMENTARY ))) *"Democracy is the worst form of government except for all the others which have been tried." Winston Churchill* THE-SHOOTIST Anyone chubbin' like me for this? mailmanmike Since Monday! That's more than 4 hours though, so according to those cialis ads I should see my doctor. tlane77 I think for a non-chemical chubby it's 6 hours before its time to see a doctor. So you should be good for another couple hours. splattttttt I wasn't goin to google "chubbin" because I assumed it had to do with fat. The lard type, not the fun stuff. But what ever feelings Jeff's experiencing, then they must be of the fun like stuff... tlane77 He's got a woody for your woods.

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