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Alan Alford's build

2250b Tube for later move to bulk CO2.
12" .22 Caliber Barrel from Doomsday Backpacker
Brian & Assoc. Alluminum Breech with 2 barrel screws
Original site rear
Pin site on Custom Mt. Airguns Muzzle Break
2x1 Centerpoint Scope with UTG dovetail adapters
Mountain Airguns Custom Bolt and Handle
Mountain Airguns Custom Power Adapter and spring guide
B&A Boss Valve for extra Power

Built mainly for fun and to shoot at local Field Trial Pistol Match.

It currently it shoots a 14.3 Crosman Hunting Pellet at about 530 fps in a 72 degree room for 8.92 FPE.



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Or ing check valve.... more Q's

March 27 2012 at 1:43 PM

dan house  (Login dan_house)
Crosman Forum Member
from IP address 153.90.162.47

Ive had a hard time accepting that straight threads are "porous" enough to allow the piston to push thru into the valve.... but everyone that says that I trust, so I'll go with it. But what I'm having trouble with is if the threads are that sloppy, what keeps the bolt from backing out under use and just falling back inside the valve....?

since all this displacement is going on where you cnat see it, how do you know where to set the "gap" for the ring, or the hieght for the bolt to the let ring work? Or am I condemned to a weekend of adjust it, install, shoot, observe and record, and tear it down to readjust.. and repeat until accpetable performance?

Will the O ring CV decrease the valve cracking pressure like the isolated check valve setup?

And does the DORCV have a place in air conserving setups?

TIA

 

 



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This message has been edited by dan_house from IP address 153.90.162.47 on Mar 27, 2012 1:52 PM


 
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