Bottles. Aluminum vs Carbon Fiber

[jmohme]

Early this summer I bought an Umarex Origin to get my feet wet in the PCP waters. So far it has been great but now I am looking to upgrade and have been shopping around.

One of the options I see quit a bit is aluminum or carbon fiber for the bottles. What is the advantage to Carbon Fiber?

I seem to recall that the CF bottles are still a metal bottle just with an carbon fiber exterior, so I don't see this as a weight savings, so is it just for added strength, or some other reason?

[Back_Roads]

 CF bottles are feather weight vs a thick AL bottle. the inside AL bladder is much thinner than an AL bottle, and takes less thickness of CF to get the same strength .

[jmohme]

CF bottles are feather weight vs a thick AL bottle. the inside AL bladder is much thinner than an AL bottle, and takes less thickness of CF to get the same strength .

That makes sense.
Thanks

[Rat Sniper (AKA: PaulT58)]

Typically, the CF Tanks also have a higher fill pressure.  Most aluminum tanks can only be filled to 3000 psi where the CF tanks can be filled to 4500 psi.  So, you not only save weight, you get a higher shot count as well.

[Back_Roads]

 Here is a side by side of an Airforce Escape bottle 3000 psi fill, on the left, and on the right a 4350 fill aluminum bottle same cubic inch capacity, but one designed to be higher pressure, and is fairly easily 2x the weight of the Airforce bottle.


 Here is a 4500 psi CF bottle, I got this for the escape, but found it too light and made the gun nose heavy, so plan B was to bottle my prod, got lucky found the parts cheap from a dealer selling out of the business.
 This was the icing on the cake as far as a nicely balanced Prod bottle build IMO. 

[Back_Roads]

 And here is the heavy aluminum bottle giving the escape regulated shots and a bit more weight at the rear, helps balance out when having a bipod or the like mounted up further.
 So many reasons for different types of bottles.

[Mike -]

Here is a side by side of an Airforce Escape bottle 3000 psi fill, on the left, and on the right a 4350 fill aluminum bottle same cubic inch capacity, but one designed to be higher pressure, and is fairly easily 2x the weight of the Airforce bottle.


 Here is a 4500 psi CF bottle, I got this for the escape, but found it too light and made the gun nose heavy, so plan B was to bottle my prod, got lucky found the parts cheap from a dealer selling out of the business.
 This was the icing on the cake as far as a nicely balanced Prod bottle build IMO. 

Mmm, the above statement in red...makes NO sense !
A LIGHTER cylinder, makes the gun, "nose heavy".  I don't think so.

Mike

[Rat Sniper (AKA: PaulT58)]

Here is a side by side of an Airforce Escape bottle 3000 psi fill, on the left, and on the right a 4350 fill aluminum bottle same cubic inch capacity, but one designed to be higher pressure, and is fairly easily 2x the weight of the Airforce bottle.


 Here is a 4500 psi CF bottle, I got this for the escape, but found it too light and made the gun nose heavy, so plan B was to bottle my prod, got lucky found the parts cheap from a dealer selling out of the business.
 This was the icing on the cake as far as a nicely balanced Prod bottle build IMO. 

Mmm, the above statement in red...makes NO sense !
A LIGHTER cylinder, makes the gun, "nose heavy".  I don't think so.

Mike

The airgun he's referring to, the escape, the tank mounts on the back of the gun and doubles as the stock, so the heavier aluminum tank provides better balance than the lighter CF tank.  Look at the picture in his other post, you'll see how the tank is mounted.

[kbstingwing]

I upgraded both of my Umarex Gauntlets with 500cc 4500 psi carbon fiber bottles and modified the stocks, the guns are about 2 lbs lighter now