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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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Dan you have me soooooooooo confused

June 21 2012 at 7:17 AM

buster  (Login threex4)
Crosman Forum Member
from IP address 72.177.220.213


Response to Chrony speeds and adjustments

I thought I figured out how to adjust, but what your writing is just the opposite of what the OM says to do.
the hammer spring (3/16 hex) will only turn 7-1/4 turns to full cw and the hammer striker(1/8 hex) 12 turns to full cw.

forget saying preload, because both the spring and striker have preload.

if your adjusting with the 1/8 hex your adjusting the striker preload.

if your adjusting with the 3/16 hex your adjusting the spring preload.

now if your adjusting 9-1/2 turns, it can only be the striker preload, which acording to the OM decreases the flow of air, so your choking the air flow.

if your adjusting the spring preload, it only will turn 7-1/2 turns, that I know from doing it, once adjusted full ,the hammer spring guide will only turn till the opened end of the threads and will turn but will not doing anything to the spring.

#
20 Striker
21 Pin, Acetal
22 Hammer Pin
23 Hammer
24 Spring, Hammer
25 Guide, Hammer Spring


[linked image]

this is getting too technical for me, its giving me a migraine. all I want is to get the numbers your getting.

now what are you adjusting to get your numbers, spring or striker?

Buster
\\\ X ////
one step closer to the ultimate goal

 
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