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1-year limited warranty
List Price $30.00 Save $5.05 (16%)
other products by Air Venturi
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Things I liked: I have rebuilt 4 times now with this spring and find it to work and last longer than the original spring that came in the HW97K.
Things I would have changed: I wish that the springs came already polished
What others should know: Be sure to polish both ends of the spring before installing it
Things I liked: Slightly snugger fit. A bit more power than original spring
Things I would have changed: nothing
What others should know: works great
Things I liked: Everything
Things I would have changed: Nothing
What others should know: New spring is a different design than the original one. Original spring has a helper spring 2 inches long on one end. Looks like double coils on the first 2 inch section of original spring. My Beeman R10 with this spring and new seal, fires 10.65 Kodiaks at an avg of 770 fps. I added two hardened washers at the rear of the new spring before assembly. This rifle has absolutely no spring (twang) when firing. NICE.
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What spring do I get for HW 77k carbon for 25 Cal or are they the same how many coils
They use the same spring since the rest of the gun is what determines what spring it needs, not caliber. Of course you can always find a stronger one if you want more power, like a Vortek, but typically a stronger spring has drawbacks due to the harsher reverse recoil. Like it's harder on the scope and it jars the gun more so accuracy suffers. You can certainly try one, or this one, and see how you like it. As for coil count, the picture may be generic. Plus coil count is not very important, what matters is the spring rate, length & force at coil bind, and quality. So one with less coils could be better than oem, or the other way around. More coils gives you better spring rate (lower rate), but due to space restrictions in the gun that typically means smaller wire so it's weaker compressed. Fatter wire is stronger compressed, but with a higher spring rate so it's like two steps fwd one step back. Then there's outside/inside diameters which affect power as well, and can make it louder due to fit. The oem spring is close to ideal in all specs for the avg shooter, but depending on what is important to you there is likely room to alter it. Most just want more power but many find a stronger spring is not worth the trade off and they take it out. Whatever you do buy top quality because lesser ones weaken more with use than good ones. Vortek should have a variety of springs that fit, plus they include specs to make a better decision.
could i fit this spring to my hw97kt??? how much energy coul it produce???
Only 26 coils?