GTA
All Springer/NP/PCP Air Gun Discussion General => "Bob and Lloyds Workshop" => Topic started by: Chickenthief on January 12, 2020, 02:24:02 PM
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Hello Sir.
So how "firm" is this rule of yours?
Thing is that i'm having an Airforce Texan .45 TX2 and i thought that i "thought" of a neat addon.
In short replacing the bottle with a tube/plenum and have the shoulderstock include 2 90deg bends + an underlying carbon bottle. But since the AF has a 480cc bottle for a 700fpe gun i'm SOL for an upgrade and i think i just might go thethered like all the rest ;-)
Like Peter Sellers said in the film: Murder By Death. Angry man arguing with cow on wall, is like train without wheels, soon gowing nowhere. https ://youtu.be/ne9hTr5jwB4?t=44
Noob = no external links so omit the space between https and :// and you should be good!
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This common base line of 1cc per ft-lb of power is spoken of in REGULATED PCP's and not those PCP's that take / use the entirety of the tanks volume to supply the shot.
As stated many times you can get away with 1/2 cc per ft-lb and still make high power, it just takes a higher set point pressure to extract the same power using just the air within a regulated guns plenum.
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If the reservoir is only 1/2 cc per FPE, you will produce a bit less power from the same pressure than if the reservoir was 1 cc per FPE.... Consider this chart....
(https://i378.photobucket.com/albums/oo221/rsterne/Hayabusa%20PCP/EnergyvsVolume.jpg) (http://s378.photobucket.com/user/rsterne/media/Hayabusa%20PCP/EnergyvsVolume.jpg.html)
As you can see, the smaller the reservoir, the less power.... but it doesn't become a serious problem until you go below about 1/2 cc per FPE.... The drop from 1 cc per FPE down to 1/2 cc per FPE is about 8%....
Bob