whats the biggest crosman pumper valve ever made???????nt

whats the biggest crosman pumper valve ever made???????nt

Joined: April 28th, 2010, 12:23 am

January 3rd, 2012, 7:57 pm #1

whats the biggest crosman pumper valve ever made???????nt
Last edited by robnewyork on January 3rd, 2012, 8:01 pm, edited 1 time in total.
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Joined: March 1st, 2002, 12:22 am

January 3rd, 2012, 8:02 pm #2


how big can we make them?

is it a matter of simply, say doubling the size of the pump tube, valve and associated linkage? How much more presure, speed, FPE, FPS etc etc could one expect from a 1377 valve made twice as big?


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Joined: April 28th, 2010, 12:23 am

January 3rd, 2012, 8:05 pm #3

in translated muzzle energies./granted all other variables like caliber and barel length and config are the same .
Last edited by robnewyork on January 3rd, 2012, 8:10 pm, edited 1 time in total.
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Joined: March 1st, 2002, 12:22 am

January 3rd, 2012, 8:47 pm #4

maybe a smaller increase in size would yeidl better performance than an arbitrary doubling....

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Joined: April 28th, 2010, 12:23 am

January 3rd, 2012, 8:50 pm #5

otherwise the biggest limiting factor would be finding Paul bunyon to pump the thing past 1 pump....and obviosly if chambered in smaller caliber the excessive pump -valve size would prove useless overkill also.
Last edited by robnewyork on January 3rd, 2012, 9:15 pm, edited 1 time in total.
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lhd
Joined: November 22nd, 2002, 10:41 pm

January 3rd, 2012, 9:34 pm #6

how big can we make them?

is it a matter of simply, say doubling the size of the pump tube, valve and associated linkage? How much more presure, speed, FPE, FPS etc etc could one expect from a 1377 valve made twice as big?


dr_subsonic's pneumatic research lab

the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
But make it twice as large, it would be pretty hard to even get it to open with that puny striker setup.

But the SIZE of the stock Crosman valve isn't really limiting power much at all until you are up well over 40fpe in .22 cal. anyhow.
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Joined: April 28th, 2010, 12:23 am

January 3rd, 2012, 9:43 pm #7

all would need to be brought up to scale i suspect
Last edited by robnewyork on January 3rd, 2012, 9:46 pm, edited 1 time in total.
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Joined: March 1st, 2002, 12:22 am

January 3rd, 2012, 10:32 pm #8

becuase of the bigger springs..... hmmmmmm

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Joined: April 28th, 2010, 12:23 am

January 3rd, 2012, 10:55 pm #9

unless u use a lever action side cocking mech like the fancy guns use.
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Joined: November 28th, 2002, 6:26 pm

January 3rd, 2012, 11:05 pm #10

whats the biggest crosman pumper valve ever made???????nt








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