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Spring Piston vs. Gas Ram: Which is Your Preferred Powerplant?
- Thread starter JustNeedORingSize
- Start date
Can that preload be altered with a pump? For instance the HW90 can be altered. When I remember well the pressure in the strut is about 26 bar.
Does anyone know how much the pressure is in the cocked strut?
Never opended such a gas strut but I was thinking that the gas volume in the cocked strut is a very small fraction of the expanded volume.
As comparison the preload in the HW 80 is about 6 cm and cocked it is 14.5, So force cocked is about 2.5 times preload.
What is the ratio for compressed/expanded in a gas ram? I think it comes down to this question, how does such a gas ram look like? Is it the above or the second scheme? I always thought it's like the first but when it's the below scheme I can understand why the gas ram preload is higher (and why the gas ram can provide higher energy in the same compression chamber.)
Does anyone know how much the pressure is in the cocked strut?
Never opended such a gas strut but I was thinking that the gas volume in the cocked strut is a very small fraction of the expanded volume.
As comparison the preload in the HW 80 is about 6 cm and cocked it is 14.5, So force cocked is about 2.5 times preload.
What is the ratio for compressed/expanded in a gas ram? I think it comes down to this question, how does such a gas ram look like? Is it the above or the second scheme? I always thought it's like the first but when it's the below scheme I can understand why the gas ram preload is higher (and why the gas ram can provide higher energy in the same compression chamber.)
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I‘ve been shooting my 90 .20 every chance I get. One favorite for sure. Only thing I’ve done to it, is turn down to 18 bars. I don’t understand how it works it but know it’s very accurate, consistent and a treat to shoot. I have my 90 .25 in line to be shot tomorrow, same deal as the .20. The more I shoot the 90’s the more I crave them.
3 years ago would of been a completely different story. Crow
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I think about getting one but at 0.22" They seem to be the most experienced gas ram guns by far.
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Again I have to say this HW90 .25 is my most controversial rifle hands down. When I first got it, I despised it. Shot this morning easily dime groups at 35 yds. with amazement. Awesome gun, have to have the pump and gauge. 
Crow
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i'm out of funds for a while , just bought 5 rifles in one week . No more guns till next air gun show . Woe is me !
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