Hi Everyone!Over the years I've seen it stated numerous times that shooting heavy pellets in "non-magnum" springers can cause spring damage or at least drastically shorten spring life. I never really thought about it much until a little while ago, but then I got curious...After thinking about it for a little while I realized that I couldn't really figure out why a heavy pellet would have an adverse effect on the spring. Not saying it isn't true - just wondering about the mechanics involved... When the trigger is pulled, the spring pushes the piston forward compressing air. Once the air pressure is enough to move the pellet (function of bore diameter, pellet weight, and pellet/bore static friction) it is accelerated down the bore. I can see that lighter pellets and/or pellets that fit looser would move at lower (likely much lower) than average pressure. On the other hand, heavy pellets and/or ones fitting tightly in the bore would require more than average pressure.I don't know the relative importance of pellet fit vs weight. Would a light pellet with a tight fit start moving easier/sooner than a heavy pellet with a normal fit? Or the opposite?Assuming a "normal" pellet fit, how much peak pressure difference would there be between, for example, a 7.9 grain and a 10.5 grain .177 pellet"? This is just me thinking out loud.Now to my real question... Let's assume that the answer to the question above is something like 20% more. How would that cause spring problems? As I understand it, the piston stops before it contacts the end of the compression cylinder even for a light grain pellet, then bounces back a little - before finally completing it's stroke as or slightly after the pellet departs the barrel. Would the heavier pellet and higher peak pressure cause the piston to rebound more violently? Would it dramatically change the rebound distance, velocity, and acceleration? Would this rebound physics change directly shorten spring life, or could it be due to the change somehow exciting one of the spring resonant frequencies?Sadly, I have way more stupid questions than answers...bes
I would thing compressing the spring. Over and over would do the damage over time ( kinda like twisting a wire so to say) The release of the spring just brings it back to natural . The compress and the release over time fall under fatigue then the quality of the spring steel to last under that.Know nda to they say don't leave a springer cocked over a period of time/ storage.Also I would think the rubber parts like seal would "" blow out"" way before the spring fails over use and pressure of shotsI'm no expert but just my opinion and thinking
This is a myth.
These worries about spring life are nonsense, That just somebody who thinks things last forever, and they don't! a spring costs $20 bucks! + shipping quality springs! and will probably 15 to 20k shots that's a lot of shooting!
Quote from: Robert 5mm on May 10, 2021, 06:40:36 PMThis is a myth.If they did, then any springer offered in multiple calibers would have cascading spring life base on caliber. So a HW95 in 177 would have a longer life than a 20, which in turn would be longer lived than a 22, and a 25 would be shortest of all.Wouldn’t we see more people complain about broken spring with the larger caliber guns of the same model? Have I missed those threads? Sure the load is different, and there may be some small difference, but I doubt it would be noticeable. I go with old wives tale instead of myth.