HW/Weihrauch THEOBEN HW/90 ADJUSTABLE GAS RAM
- By beerthief
- Traditional Airguns
- 21 Replies
Thankyou very much , i have never heard it explained this way , makes sense now .there's only so much room for adjustment. there's not a lot of volume for air in the ram and big changes happen quickly with tiny amounts of air released. It's very easy to dump too much out. The bigger issue is the shot cycle becomes terribly slow and what I call frumpy if you reduce the power too much. on the top side, the shot cycle is teeth rattling and the guns near impossible to cock.
Adjustable ram or not you still have to contend with physics. you have X amount of swept volume and an X amount of mass in the piston that we have to move from point A to point B. How fast you move it determines your power and shot cycle. Too slow is bad and too fast is bad. There's a range in the middle that works well and within that range is what you like. I like them quick and clean.
BTW the same thing applies to spring guns. People often think the more you reduce power the more accurate and pleasant the gun gets. There's a limit to that too because your still stuck with the same physics outlined above. For instance a12fpe Hw95 will shoot nicer than a 12fpe Hw80 simply because the piston and spring has less mass in the 95. That's contrary to what some would think. An early 25mm Hw77/97 will shoot nicer at 12 fpe than a 26mm Hw77/97 simply because the piston is lighter and 12 fpe is well within the comfortable range of the swept volume.
Sorry to go on a rant but the misunderstanding of certain topics makes me crazy. The topic of "detuning" a gun for comfort and accuracy is riddled with misgivings. Even the term "detuning" is wrong. if you lower the power to suit your preferences, you're still tuning the gun. just for less power.
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