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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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Friction is just one of many concerns in designing a gearbox

December 21 2011 at 9:46 PM
scot laughlin  (Login classicalgas)
Crosman Forum Member
from IP address 24.17.160.61


Response to Gear boxes get hot Steve, sure about 'Zero' friction?

and like most engineering projects, the factors are balanced according to priorities. Long life, cost of manufacture, and low noise are probably higher priorities than lowest possible friction...but I've never designed a gearbox.

 
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