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Old 10-31-2011, 12:25 AM   #11 (permalink)
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brass eagle raptor barrels are the solution, they are pitched properly and require very little if any work to function. I believe that all of the sterlings previous to the last gen. of convertable stp's were proprietery threaded.
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Old 10-31-2011, 03:24 AM   #12 (permalink)
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No not all previous to last gen.
My brother bought a Sterling Bronze a handfull of years ago, new in box from the local paintball dealer. It didn't have the same threading as my STP have.
And apart from the frame that had recieved a facelift (with new seal to the drilled hole in the body, another trigger spring and a lonestar grip mount), the marker sucked major *** (which is a more or less direct quote translated from Swedish bad words).
I was so surprised that something that bad could have the name Sterling on it.
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Old 10-31-2011, 08:30 AM   #13 (permalink)
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Old Angel barrel can be made to work on old sterlings.
I did that once with a file and the result wasn´t pretty but it was functional.
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Old 10-31-2011, 08:42 AM   #14 (permalink)
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It doesn't seem strange if you think about it. Markers use the same caliber paintballs, so the barrels must have roughly the same ID and it wouldn't make much sense
to have a huge OD on a barrel for weight reasons. Most threads (both metric and imperial) that are standardized for those outer diameters have more or less similar pitch.
As mentioned earlier. 14tpi equals pitch 1.81 which is dangerously close to pitch 1.75 on a less than one inch distance.
Over a longer distance the difference would be more noticeable and could prevent you from screwing the odd thread all the way down.
On a small distance though it could work without binding. But that is not an universal thruth, it's just my own limited scope observations.
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Old 03-02-2013, 06:59 PM   #15 (permalink)
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Pitch.... .07 on the money when your setting up a lathe...

(i know this is a necro, but it helps when your searchin!)

Thread Specs
Major Dia .861"
Minor Dia .773"
Pitch .75mm, 14.28tpi, .070" (whichever you prefer)
Pitch Dia .816"




i just ran the thread cycle on the lathe
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Old 03-02-2013, 07:55 PM   #16 (permalink)
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14.28 eh

dose that convert to a metric thread better?

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Old 03-02-2013, 07:57 PM   #17 (permalink)
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Quote:
Originally Posted by Bartman View Post
14.28 eh

dose that convert to a metric thread better?

Bart
yes .75mm = 14.28 tpi = .070" pitch
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Old 03-02-2013, 08:04 PM   #18 (permalink)
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Raptor threads are 7/8-14. The Barrel hole is the exact spec for this thread. You just have to take a little off the Raptor shoulder.

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Old 03-02-2013, 11:08 PM   #19 (permalink)
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Quote:
Originally Posted by super_stanchy View Post
yes .75mm = 14.28 tpi = .070" pitch
thanks man, I was thinking that. Was getting ready to cut my self a Ifit Back for my next sterling build.

Quote:
Originally Posted by blackrain View Post
Raptor threads are 7/8-14. The Barrel hole is the exact spec for this thread. You just have to take a little off the Raptor shoulder.

Later,
Blackrain
That's awesome, thanks Blackrain good info.

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Old 03-03-2013, 11:08 AM   #20 (permalink)
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Quote:
Originally Posted by blackrain View Post
Raptor threads are 7/8-14. The Barrel hole is the exact spec for this thread. You just have to take a little off the Raptor shoulder.

Later,
Blackrain
Since raptor barrels are relatively common still (somehow) you can also sacrifice a stock one in order to cut an appropriate sized spacer from the shank. That'll let you use any raptor barrel in your sterling w/o machining.

Had a buddy who did this and it worked well.
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