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 photo 63f5b325-0274-4312-9dbd-2effde5b3715_zps0x27orls.jpg

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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Patent # Yada, Yada, Yada

March 11 2011 at 10:43 AM
Ron  (Login oo7fuzz)
Crosman Forum Member
from IP address 24.167.225.137


Response to That's a good point, Steve. Any suggestions on other ways to handle that?

You are an innovative feller, scot.

Whats the chances of having a very small diameter piston with long stroke up front which is propelled by the contemporary scissors linkage.

Hidden in the buttstock is another piston of greater swept volume which will feed the small pistoned pump. This is a two stage pump once removed.

Now the cylinder in the buttstock will most likely not end up inline with the forward piston.

So the problem is linking the buttstock piston to the forward piston with some sort of linkage that is flexible.

For this I might suggest a push/pull throttle cable assembly. Which would easily pull the large piston yet have enough rigidity to push the large piston for air replenishing.

Now the throttle cable could be so designed so that the air from the large pistoned cylinder is transported to the forward pump thru the sheathing of the throttle cable which, at the small cylinder, is fastened to a fitting which was o-ringed so as to direct the air into the small cylinder yet allow the throttle wire to be fastened(in some way) to the forward pistons linkage.


 
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