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1. 12:15 PM - Re: Pneumatic fill rates and calcs (\)
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| Subject: | Re: Pneumatic fill rates and calcs |
Sean,
I think you are confusing volume with pressure.=C2- A paint ball tank doe
s not the same space volume as the air tank on a CJ-6.=C2- Yes, it has gr
eater pressure but with a lower amount of air.=C2- And it does not take a
s much air to fill and pressurize the CJ's system but it takes a lot of air
to fill the CJ's air tank.=C2- At 50 atmos (about 750psi normal system p
ressure on CJ) a paintball tank pressure (4,300psi) should get the CJ's sys
tem filled for a start but not the CJ's tank.=C2- If I remember correctly
, the QS1 valve to the brakes reduces normal system pressure from 50 atmos
(750psi) to about 10 atmos (150pis) simply so as to not blow up the rubber
bladders in the brakes. Also, you can start the engine with as little as 25
atoms (300 psi) of system pressure.=C2- If you plug in your paintball ta
nk to the normal air refill port BUT leave the main tank valve closed, you
will only pressurize the system and NOT fill the tank. You will then have m
ore then enough pressure to start your engine simply because the system doe
s not have the same volume as the tank.Jim "Pappy" Goolsby
-----Original Message-----
From: Ttail <ttail@internode.on.net>
Sent: Thu, Jun 30, 2022 6:30 pm
Subject: Yak-List: Pneumatic fill rates and calcs
To the Pneumatic Genii out there. Trying to do some numbers using Paint bal
l bottle to refill the main CJ 12L tank.
2L Paint Ball bottle at 4500PSI (310) bar.
Using P1V1=P2V2 if I have an empty main 12 Litre tank then the calcs say
I should get 50 bar refill into the main system. However that assumes a com
plete transfer from one bottle to the other. In reality the transfer will s
top when pressures in each bottle are equal ..... so how to calculate the r
esidual pressure in each bottle ?
Then taking it a step further. Say I have 20 Bar in the main system what wi
ll my 310Bar 2l paint ball bottle then get ?
--------
Sean Trestrail
ttail[at]internode.on.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507380#507380
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=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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