Q:

help needed with numbers

I have a CO2 adapter and want to bore it out a little to get more volume which means more FPE.

not being very good at maths i have a question.

the area inside the CO2 adapter is the same across the board but for the sake of ease at this time say the inside of the adapter measured

100mm deep.
50mm wide.

to work out the volume inside would i multiply these figures ie
100 X 50 = 5000?

if this is wrong pleas tell me how to work this out correctly.

is there then a way to work out what this volume equates to in PSI under a 3000 – 1800psi air load?

so if i bored out the CO2 adapter to
50.5mm

what would be the new internal volume in both size and PSI?

thanks for the help with the maths.

I will keep you all posted with results of my bored out CO2 adapter unless it blows half my face away 😯

Mods/Machinists

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Viewing 14 replies - 1 through 14 (of 14 total)

there is little volume to be gained in boring out these adapters. Might want to see how well it works by optimizing pressure instead of tweaking volume.

quote SAVAGESAM:

Would rubbing alchohol work? Kinda like finding the cc on engine heads seems to me.

I like this idea, no residue…

Yep, it would work.

Would rubbing alchohol work? Kinda like finding the cc on engine heads seems to me.

I have some of them for the dog vile

A syringe from a drug store would do it. You can get them up to 100 cc.

Jim

Going to have to buy something which will measure such a small amount accuratly.

Treacle is a no no too 😆

Very good point, Yellow.

Jim

Just don’t use a viscous oil or it will take forever to pour.

Brutus,
Fill it full of water, oil or whatever you have handy.

Dump it out into a graduated cylinder and measure the volume.

Regards,
Jim

The 100 x 50 was just to help me understand the maths a bit faster. I have measured the co2 adapter now now and it is as follows but probably is not a perfect measurement.

17.07mm deep x 18.40mm wide (wall to wall)
wall depth is 6.47mm

there is the empty space inside the valve body leading up to the valve seal which measurs
29.30mm x 7.72mm

there is then the brass bolt on the bottom of the valve that puts pressure on the spring with in turn puts pressure on the valve seal that takes up some space inside the co2 adapter.

Not quite sure how to measure this so unless anyone can suggest how to I am going to have to over look it at this time.

Brutus,

The CO2 adapter is not 50mm wide. That’s two inches. The CO2 adapter’s OD is 1.300 at most. 100 mm = 4″ and that’s too much too.

I don’t know what kind of metal they are made of and so I cannot give you a wall thickness.

Let’s cut to the chase, and I don”t mean to be blunt, but you get .5 cubic inches if the Ariforce CO2 adapter is bored out to what should be the limit.

Jim

For simplicity’s sake, lets convert the 100mm x 50mm to CM. So 10x5cm…..The equation for the volume of a cylinder is: v = hÏ€r2 (Volume=height*Pi*radius squared) so : 196.42cc= 10*~3.14159* 6.25….

So the volume of the adapter, if my math is right, is around 200cc…..which seems a bit big. Are you sure those measurements are right 😕

Viewing 14 replies - 1 through 14 (of 14 total)

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