Tom West's Custom PC77 PumpMaster Classic Short Rifle
Patent # Yada, Yada, YadaMarch 11 2011 at 10:43 AM
|Ron (Login oo7fuzz)|
Crosman Forum Member
from IP address 22.214.171.124
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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