The HPA carbon fibre tanks have always confused me if im honest. Throughout everything i have read i really don't understand why everyone buys them over steel/aluminium. If there a particular reason why they are favoured by regular players or is it simply the weight? I can understand it if weight is literally the only reason, but at that price i would guess there is more to it
There are a few reasons for carbon fibre cylinders over steel/aluminium. However a number of the reasons are forgotten by people and they just by fibre because its 'better', but may not be VFM for them
The 'standard' 4500psi cylinder is bigger then the 'standard' 3000psi, which gives a bit more capacity if filled to 3000 psi or quite a lot at 4500psi
Weight itself is not much of an advantage. Balance is most important
If your marker is balanced then you can hold it ready for longer, weight does affect how long something can be held but the difference in cylinder weight won't affect all but the most 'slight' weaker person
Fibre cylinders come in many shapes and sizes, in addition to the way this affects balance those can physically fit an individual by choosing the right style of cylinder to hold the marker in the right place, with your arm ergonomically correct and the cylinder dropping into your shoulder
With regard to the cylinder in your shoulder 3000psi cylinders have flat bases, 4500psi ones have round bases
(This allows a 3000psi to be stood up, but flat is weaker in physics) to a paintballer the 4500psi circular base rolls in your shoulder
As 4500psi cylinders come in all sizes you can end up smaller then the standard size 3000psi cylinder. If 4500psi fills are available then this usually balances with air capacity. This can mean the fibre player is at a capacity disadvantage, but if the cylinder is right for them hen they have an ergonomic advantage and as long as their is enough air for the amount of paint/time they play between fills the capacity is irrelevant
As well as cylinder size for ergonomics the player should also consider an adjustable ASA on a rail. This lets them slide the cylinder slightly forward or backwards to get the position just right
Other things to consider are the old school 'drop forward' which changed position of the ASA and cylinder, and the 'kick up'
Kick ups are currently made by gommie (on this forum as gommie404) they are a wedge that sits between the grip and ASA angling the cylinder upwards slightly giving a better position and making it easier to roll the marker in front of your face to look at what you are shooting
There are also some players that out their kick ups backwards to make a 'kick down'
With capacity as long as you don't run out in game then you have enough.
But you then need to fill more often if you have less capacity. A few years back events didn't always have many fill stations.
Nowadays you should see a lot of people trying to fill at once only at certain times
Be wise and you can avoid the queues. Prepare to fill as soon as fill stations open in the morning, and position yourself to watch the queue. The queue tends to be longest when people realise it is open, and again just before game on. Top up whenever you pass a fill station
When there are both 3000psi and 4500psi fill stations you will tend to see the 4500 has the longest queue. That means 3000psi players can jump straight in. It also means 4500psi players can ignore the queue and get a part fill straight away
(This does not work the other way - it is technically possible to fill a 3000psi from a 4500psi source and stopping but you are asking for a mistake and blowing your burst disc, plus you should get turned away)
For sizes there are probably 3 general sizes of 3000psi cylinder
About 12 or 13ci. These are pretty small and won't last long for the average player
I use one but for my pistol rather than 12gram co2, or for my pump. On occasion I have used it on other markers but only for short low capacity / fun games. These still cost about the same as a standard cylinder - but also may not need retesting at 5 years
There is the standard 3000psi cylinder. If you were to have one retested every 5 years it would last forever, provided you had tests at the right price this would become cost effective, but not realy worth the effort.
There are jumbo 3000psi cylinders, but the price goes up and these are heavy and bulky
4500psi cylinders come in many shapes and sizes.
There is one type that cannot be retested after 5 years made by Stako. These realy are ultralight but they cost the same as other 4500psi cylinders so you need to be serious about weight saving to spend that much
A similar ultralightweight cylinder is now available that can be retested
The maximum life of a fibre cylinder is 15 years
Because of the cylinder cost it is viable to retest to get its full life (factor a lifetime cost of about £200 - purchase plus 2 retests)
Fibre cylinders can be damaged and then can no longer be used. The advantage a steel cylinder had is that it can be bashed around for its life and survive. A fibre cylinder will survive being bashed around but it's coating will be damaged. The only way to know it is safe will be an early retest.
If using a fibre cylinder you should use a cover to protect the coating
They can also be commonly bought without a regulator, though you ought to choose the regulator and have it fitted by the supplier
(Sometimes people think the cylinder is at a bargain price until it arrives with no regulator)
Choosing your own regulator gets you the options of low, mid or high pressure output. (The majority of markers require HP even if they operate internally at low pressure)
But your own choice can affect 'refresh rates' which is how quickly the regulator gets back up to pressure if you are firing rapidly, and other options such as a user rebuildable regulator, ones that can be reset to Lp/Mp/hp and many other options / qualities
If you intend to travel to the us then you cannot use a European cylinder, and vice versa. But you can get cylinders marked with multiple international standards (eg both Dot and pi) which allow them to be used on either side if the Atlantic.
If you intend to do this then also ensure that when the cylinder & regulator are assembled that they are not loctited together. No loctited enables you to disassemble for customs inspection and to prove it is not pressurized for flight
This can also be arranged when hydro tested (though technically a us site could refuse a uk retest even though the cylinder is marked internationally)