Air Venturi Mainspring,, Image 1
Air Venturi Mainspring,, Image 1

Air Venturi Mainspring, Fits Beeman R9, R10 & R11 and Marksman Air Rifles

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5.04 reviews
2 answered questions

$33.99

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4 of 4 Air Venturi Mainspring, Fits Beeman Reviews

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rating
5
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rating
5

Works great. Spring settled in quickly. I got stable chrony numbers after the install and breaking in the spring a bit. I would buy again for sure.

I think installing springs is NOT a do-it-yourself project. I recommend seeking a pro to do it.

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rating
5
Value for money
rating
5

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.

I wish that the springs came already polished

Be sure to polish both ends of the spring before installing it

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5
Value for money
rating
5

Slightly snugger fit. A bit more power than original spring

nothing

works great

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rating
5
Value for money
rating
5

Everything

Nothing

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.

David Jan 07, 2020

I have replaced the spring in my R-10 twice and both times the original had broken into 3 pieces. A small piece in the front and another in the rear about one inch long. There were no "helper" springs in the original R10, nor have I ever seen any such thing in any other spring gun I have owned or worked on. I am pretty sure any small pieces are of a broken spring. The R10 was notorious for that. Quite often there is little sign of breakage unless you have a chronograph and note the sudden loss of velocity.

Airgun Papa May 12, 2019

I am seeking comment from others who have read this review and have experience with the R-10. I am wondering if Gary is correct regarding the "helper spring" concept of the original or if he encountered a section of broken spring that had worked its way into the rest of the original. I have seen this numerous times on other spring guns but I have not worked on the R-10. I do know that the R-7 and R-9 have no such design and it does not seem this "helper spring" concept would offer any benefit in performance.

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