discovery valve

[ped]

this could be it
http://airgunhome.com/agforum/viewtopic.php?t=8968
makes intresting reading as all rsterne posts do
ped

[quickster47 †]

ped that definitely looks to be at least one of them.  And it is some very good reading.

Only thing I wonder sometimes is what in the world do you do with a gun like that once you get it working?  I guess it is like many things in that the fun is always in the chase.

Carl

[ped]

totally agree carl while it would be good fun for a bit, the risk of doing this would not be worth it ,thats presuming that i managed to make the required parts
it does show what can be achieved though by skilled minds
ped

[1377x]

this could be it
http://airgunhome.com/agforum/viewtopic.php?t=8968
makes intresting reading as all rsterne posts do
ped

yep that's the one rsterne made
all it takes is a little search and there you have it an answer
Lloyd sikes made a slightly different one
it is very efficient and produces over 100fpe
something like 20 shots with a 2000psi fill iirc

[WyoMan]

I believe this was the finished product:


Can be powered by HPA or pumping....
80 initial pumps and then 10 to recharge after each shot gives 60 fpe
he did get it over 80 fpe IIRC at the extreme pressure limit.......way beyond my game

[1377x]

according to the link ped posted its from a gun that was long before the disco pumper
the pumper you posted has a one piece valve
http://www.gatewaytoairguns.org/GTA/index.php?topic=39328.0

[WyoMan]

My bad.....can't access the links  Is this the valve:

[targettgii]

Yes it is

[1377x]

My bad.....can't access the links  Is this the valve:

the valve you posted the picture of is in rsternes old .25 disco the pumper disco uses a different valve