GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: Ribbonstone on May 08, 2018, 08:39:02 PM
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A love-hate relationship with a Challenger 2009 PCP.
Could get it sourted out to velocity/power pretty easily. Can easily be 5ish foot pound 110 shot target gun,or a 12 or 14 foot pound 50 shot "sporter" airgun.... I picked something in the middle (9.1 fpe) for the use it's going to see.
(https://farm1.staticflickr.com/981/41265211004_bbb14c2428_c.jpg) (https://flic.kr/p/25SsZzf)DSCN1066 (https://flic.kr/p/25SsZzf) by Robert Dean (https://www.flickr.com/photos/144930793@N07/), on Flickr
MY problem (which I've preached on several times): THE FUSSY BALL-LOCKED STRIGHT PULL BOLT.
Has needed a rebuild once or twice a year (and I didn't shoot it all that much). Will stragth tight, no movement, then grow in kick-back over time until it seems like it's just inertia keeping the bolt forward.....which kind of works in the 5 foot pound role as the mass alone seems enough to allow good shooting.
It needed yet another bolt rebuild (like the 7th time)...and I got fed up with it and whent ALL HILLBILLIE ON IT.
Rubber band. Hillbilly/redneck/good-ol-boy/ trash-man fix.
(https://farm1.staticflickr.com/982/41265208984_41a9755e1b_c.jpg) (https://flic.kr/p/25SsYYq)DSCN1067 (https://flic.kr/p/25SsYYq) by Robert Dean (https://www.flickr.com/photos/144930793@N07/), on Flickr
But it works...is infinately replacable with a zero cost part...shoots just as well...and only requires that the bolt be held back for loading (and might even "even up" the loading force when you turn loose of the T-bolt).
(https://farm1.staticflickr.com/968/28112958608_25124c1d11_c.jpg) (https://flic.kr/p/JQfg9U)DSCN1063 (https://flic.kr/p/JQfg9U) by Robert Dean (https://www.flickr.com/photos/144930793@N07/), on Flickr
Anyway...that's how it's going to stay...I'm tired of farting around with that ball-bearing-roller-lock.
Will be the "pest birds of summer" rifle...enough power to do them in at 30-35yards, enough accuracy to land them on the off switch, and 75 good (non-regulated) shos per fill.
For those of you counting.
75 shots in 15 5-shot groups
Average (at 20 yards) just under .20")
2000-1100psi
714-688fps over all for the 75 shots (3.6% variation...714-688fps)
9.1 foot pounds
efficency about 1.33FPE/cuin
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The simplest fix is often the best.
Perhaps they could send you some Crosman labeled rubber bands !
:)
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Figured I had to get some use out of it....and it is accurate and quiet (with the Rocker1 LDC).
All things considered....the rubber-band fix is in step with the quality of the bolt design and seems appropriate.
Sooo...even if you absolutely love your Challenger PCP...toss a couple of rubber bands in your pocket just in case.
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Thank you Ribbonstone.
I will use your method for my Challenger when the bolt needs it.
I was concerned about that complicated bolt o-ring replacement.
The Challenger is my favorite air gun.
It is ACCURATE.
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Prophylactics are so dang handy !!
AKA: Rubber bands etc ;D
Intended use ... Party hats ... Water proof bag for R/C electronics and now Air rifles too
Who-da-thunk 8)
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Working on it, but abandoning the ball-lock and sticking with the rubber band until I get it worked out. Will have to make a flat spring, attach it to the T- bolt, and a "nub" in the rear of the breech for the flat spring to clip onto.