GTA

All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Ribbonstone on March 22, 2015, 05:05:02 PM

Title: retuning the "orphans"
Post by: Ribbonstone on March 22, 2015, 05:05:02 PM
Working with the orphans.

Can’t be the only one with PCPs that I like well enough to keep, but never really worked out as well as I had hoped. Like the rifle just don’t much care for its dynamic handling.  So they stay home more than goes out in the woods.

 ORPAHN #1:

“Petunia” (the short/fat/pot bellied pig).

Never did work out as well for hunting as I had hoped. At 9.3 pounds and 35.5 in length. It’s a chunky-monkey.  Odd stock actually fells good, but looks pot bellied (which is why she is "Petunia", as in "Porky’s girlfriend).

(http://i157.photobucket.com/albums/t50/ribbonstone/5mm/80a314ef-f944-47c2-b9ec-bf0e72d68fa1.jpg) (http://s157.photobucket.com/user/ribbonstone/media/5mm/80a314ef-f944-47c2-b9ec-bf0e72d68fa1.jpg.html)

One of the few PCP's that actually looks better with an LDC:

(http://i157.photobucket.com/albums/t50/ribbonstone/5mm/af38d033-58ea-4417-bb4d-e5fe6b637b44.jpg) (http://s157.photobucket.com/user/ribbonstone/media/5mm/af38d033-58ea-4417-bb4d-e5fe6b637b44.jpg.html)

Not the most efficient rifle in the safe, but moving normal weight 5mm's at a reasonable speed (can add 20fps for 13.7gr. JSB's):

(http://i157.photobucket.com/albums/t50/ribbonstone/5mm/04cea2ae-4b89-4cd0-89e7-a43a7bedfff2.jpg) (http://s157.photobucket.com/user/ribbonstone/media/5mm/04cea2ae-4b89-4cd0-89e7-a43a7bedfff2.jpg.html)

Either one of the “odd” ones or one of the “typical” ones.  Without changing ANTYHING besides the spring tension:

1. The shot count goes up.
2.The working pressure goes up.

Am thinking this is how a PCP SHOULD BE.   Will try a full 3K pressure and see if I can get it up to 24 foot pounds for the same number of shots.

ORPHAN # 2: ‘Fugly” (looks like a plumbers nightmare)

Was never happy with it as a PCP.  Wasn’t excessively happy with it as a co2 (esp. as my favorite paintball shop closed).  Tri3ed it as a 5mm HPA and wasn’t too thrilled.


Reworked it today as a .177 HPA.

Some time back and converted a 177 barrel from a junked Gamo 126 ( SSP match gun).  Made black delrin barrel bushings that were a hard-push fit inside the frame.

Took out the4 5mm bsrrel and dug that .177 barrel out of storage (it ended up at 14” rathan than the typical 12” of a TalonSS).

Set if for just about 12 foot pounds (11.7 foot pounds) and tried 4 different pellets.


(http://i157.photobucket.com/albums/t50/ribbonstone/5mm/8d688b30-5ce9-490a-884f-9404fc902e26.jpg) (http://s157.photobucket.com/user/ribbonstone/media/5mm/8d688b30-5ce9-490a-884f-9404fc902e26.jpg.html)

Nice thing about HPA is that it is proportional. If it takes 700Psi to make 60 shots, then 1800psi (3K to 1.2K) should make 2.57X that number of shots fropm a full 3K fill, which workes out to be about  155 shots.