Mainsprings comparison (pic)

Mainsprings comparison (pic)

Joined: August 5th, 2004, 12:15 am

August 3rd, 2006, 12:10 am #1

Here's a pic of four springs. The first is the orignal factory spring out of my CF-X, after quite a bit of use. The second spring is the Jim Maccari spring that went into the CF-X, before use. After some use it got compressed and settled to a shortened length almost the same as the original spring. The third is the mainspring from a Daisy Powerline 1000S, after some use (maybe 200 rounds). That's a pretty powerful gun owing to this spring; the gun shoots a lot better after some tuning. The fourth spring pictured is from the Tech Force 99 (or QB 36-2). It's too long, in my opinion; they would have done better to make a shorter, thicker spring. I do not have spring measurements other than overall length as pictured.
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Joined: August 5th, 2004, 12:15 am

August 3rd, 2006, 12:11 am #2

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Joined: February 14th, 2006, 4:12 pm

August 3rd, 2006, 12:14 am #3

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Joined: July 11th, 2006, 2:45 pm

August 3rd, 2006, 12:34 am #4

which one shoots the best in the gun you want to use?
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Joined: August 5th, 2004, 12:15 am

August 3rd, 2006, 12:51 am #5

the JM spring in the CF-X. The spring in the Daisy Powerline 1000 (Turkish made) is a good one I think. I read somewhere that one of those guns was shooting through a chrony at 1030 or 1050 fps out of the box without any tuning. No false advertising there.
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Joined: February 14th, 2006, 4:12 pm

August 3rd, 2006, 2:10 am #6

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Joined: February 4th, 2006, 8:11 pm

August 3rd, 2006, 3:17 am #7

Here's a pic of four springs. The first is the orignal factory spring out of my CF-X, after quite a bit of use. The second spring is the Jim Maccari spring that went into the CF-X, before use. After some use it got compressed and settled to a shortened length almost the same as the original spring. The third is the mainspring from a Daisy Powerline 1000S, after some use (maybe 200 rounds). That's a pretty powerful gun owing to this spring; the gun shoots a lot better after some tuning. The fourth spring pictured is from the Tech Force 99 (or QB 36-2). It's too long, in my opinion; they would have done better to make a shorter, thicker spring. I do not have spring measurements other than overall length as pictured.
TF99 springs. What is the actual difference in length, ID and OD?

Thanks,
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Joined: July 27th, 2006, 11:45 pm

August 3rd, 2006, 1:19 pm #8

Which JM spring did you use? I was told none of the JM spring fits the gun and/or the stock CFX spring guide. Did you have to machine your own guide?
Last edited by airgunner3 on August 3rd, 2006, 1:20 pm, edited 1 time in total.
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Joined: October 22nd, 2005, 4:38 am

August 3rd, 2006, 2:30 pm #9

...the JM Tarantula gave about 40-50fps more.
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Joined: April 12th, 2005, 2:33 pm

August 3rd, 2006, 3:12 pm #10

But the best improvement came from consistency from shot to shot...
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