CO2 Adaptor and a power drill…
hello all,
for those of you that have used a CO2 adaptor will know there is a small hole inside it for the air to flow through.
do you think that if i bored out this hole or added another of the same size on the other side of the pin i would get more PFE per shot with the same pressure reg?
All Replies
have you adjusted the top hat , on the adapter at all.
Bit of progress.
Instead of chopping the insides out of my co2 adapter I thought there must be another way of increasing the internal volume without risking blowing up the aide of my face and the is so I did that.
With a dremil I cut off the top of the valve seal, the bit that has the head on it so you can tighten or loosen it. Now that should have made a slight difference but No it didn’t. Not a single fps.
If anyone here thinks that there would not have been a difference please let me know but to me more space means more volume which means more fpe and fps.
It would appear that only the regulater will make a difference to you fps other then main spring and hammer setups.
Using a bn spring a get 775 consistantly. Using drums medium spring I get 650. Both with a 65g hammer
That’s the problem. What is the maximum befor the thing fails and takes away my head?
I am hoping to work out what is needed for 2000psi and keep to that. I will keep you all up to date with everything but don’t thin much will need to be removed.
I would bore out the body to maximize the available volume and install a New style Condor valve in the adapter. Supply it with 2,000psi from the reg and good to go.
Walter….
The post is titled help with numbers.
I will measure up the co2 adapter tomorrow and post the details hopefully you guys can confirm if I have got it right.
Yep, volume of a cylinder is:
pi * r * r * h = vol
I’ve figured shots as
volume (in3) * fill pressure (psi) / operating pressure (psi)
So a 12L tank at 3000psi to a 2000psi .8L tank.
12,000 cm3 * .016 in3/cm3 = 192 in3
192 in3 * 3000/2000 = 288 shots
800 cm3 * .016 = 12.8 cu in.
12.8 in3 * 3000 psi /2000psi = 19.2 shots
Your mileage may very.
Jim[/img]
The equation is Pi (3.142) x the radius squared. To get the radius measure the base of the cylinder across and half it. To square. It multiply it by itself. You then multiply it by the height to get the volume, simple!
Well that’s the reply I got from the old man and he studied physics many many years ago.
Brutus,
What is, or where is that question?
Jim
I know when I used to do risk assesments for gas generator installs, I calculate the volume of the room by x ing the height by width by length.
So for a cylinder shape, maybe just height by diameter?
I am using a 24inch barrel so I could just poke the animals to death but would rather try and shoot them…
Can any of you here help with another post I made to do with volume?
And if you are gonna bore out the adaptor, make sure you are using a long barrel or your just gonna be wasting air…
Putting another hole will give you more airflow, but not pressure (Sorry Don, 😀 )
You have to get that air to the back of the pellet for it to give you more power. More volume in the regulated reservoir will not raise the pressure, just the volume of air you can send to the pellet. Boring out the CO2 adapter to allow more volume will do more for power than a bigger hole. You don’t want the unregulated air (trying to refil the regulated reservoir) to affect the pellet…only the air in the reg’d res.
That hole is there just to fill the reservoir, not to push out the pellet.
Regards,
Jim
well thats a great help thanks for that.
i was going to drill out a second hole on my CO2 adapter but thought it was more about the volume in side the adapter.
just to confirm then…
drill a second hole of the same dimension on the oposit side of the pin in the CO2 adapter to X2 the air flow.
There was a post that talk about this somewhere here before. Basically, you need to drill another hold to get more volume of air flow through adapter.
Single hold could get approximate 800-900 psi pressure, if you drill second hold the same size from other side of that middle pin, you will get another 800-900 psi pressure, if you want more than 1800 psi pressure, you will need to drill third hold to get approximate 2400-2500 psi pressure. I drilled 2 additional holds which total 3 holds on mine, it work great.
Before you drill your CO2, please make sure your valve is second addition or use other high air flow valve, the old AF valve does not do any good.
Hope this help.
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the top hat does not do much if i remember right it gives me about 10fps.