TargetTalk

Hi there,

Been trying to calculate how many fills I would get. But can't find any information on the capacity in CC of the Steyr standard and short cylinders.

Thanks for your help

Paul

isn't the volume inscribed on the cylinder.

for AP cylinder, it is 68ml i think, if i'm not wrong

donthc wrote:isn't the volume inscribed on the cylinder.

for AP cylinder, it is 68ml i think, if i'm not wrong

You could be right, but please remember: that is the net avilable volum in the cylinder. Customary, an AP air cylinder is normally used until the pressure gauge points to the lover end of the geen indicator field, which is usually at about 70 - 80 bars.
If the max fill pressure is 200 bars, a remaning pressure of, say, 70 bars meens you have "spent" 130 bars. This translates to a "spent" volume of initially compressed air: 130 bars/ 200 bars* 68 ml = 44,2 ml of the net volume of air of initially 200 bar pressure.
Hope this clarifies some.

Thanks Guys

Here is the data from a recent experiment:

A 5 litre bottle was used and filled by a compressor with 210 bar pressure.

From this bottle 20 refills (for a Steyr LP10 with a standard cylinder) were possible until the original pressure was down to 170 bar.
With the original pressure 75 shots caused a drop from 200 bar to 110 bar.
Before the bottle was refilled, 75 shots caused a drop from 170 bar down to 80 bar. (80 bar is still "green", hoewever close to "orange" - as read from the provided extra pressure instrument)

Regarding the precision:
With 170 bar 75 shots were done and then continued until a deviation in height was noticed (in this case 2 rings). The shots remained in place until shot 130. For the next 10 shots the position of the holes dropped by 2 rings as stated.
When the cylinder pressure was checked after that, the reading was 30 bar (in the middle of "orange")
It seems therefore that the fill of a standard cylinder with 170 bar provides a suppply for 100 shots with still a convenient margin before the precision goes down.

Excellent info ASA thanks

pauln wrote:Hi there,

Been trying to calculate how many fills I would get. But can't find any information on the capacity in CC of the Steyr standard and short cylinders.

The capacity of the short cylinder is 50ml.

jipe wrote:[,


The capacity of the short cylinder is 50ml.

Thanks