Just a lil testing with the hammer spring shims...

Oh and just so you guys know... I wasnt going for a fps title or anyhting. Just thought id try it out so incase someone asked the question... well I wonder how much that mods helps? Then there is a thread for it

But keep the good stuff coming !!

[IJL]

Roy
If you follow this link
http://65.29.172.249:810/Server_Files/GTA/PCP_Conversion_pdf.pdf
It will take you to a file Jason is hosting for me. It tells everything I know about the PCP conversion we used to sell and I have on one of our QBs.
We are working on a different style now, slimmer, easier to fit etc but safety is a prime consideration so development is slow but painstaking.

Bob is right about the consumption. at over 1000 fps a 50 shot between fills QB turns into a 5 shot between fills rifle.
Also it is VERY loud ! We can use noise reducing LDCs here and it's still loud, louder than a CO2 qb at 12 fpe IMHO. Must be the gas speed. He also right about temperature, he posted a very useful temp/pressure chart a while back in the library.

Having a good idea of what MM does to his high power valves and the porting sizes he uses I would have expected a little more, but again, I may be mentally confusing 170 BAR PCP stats with CO2. (Cant find my comparison data at the moment)
Also remember the UK law does not allow me to go to these power levels, they were only achieved by accident and the faults rectified immediately,  so my knowledge is not the deepest over 12 fpe.
If you want the "full race" tune try a longer valve stem but as has been said, the white clouds are all but wasted gas.




Ian