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Old 04-07-2008, 03:45 PM   #1 (permalink)
epz-browncoat
 
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cocker spring questions

I am in need of main springs for an autococker, can anyone tell me the technical specifications. What I mean is exact length, diameter, or what you call the stiffness. I really do not want to buy a couple of spring kits if I don't have to just for the main springs. Thanks, Matt
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Old 04-08-2008, 01:46 AM   #2 (permalink)
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Good luck. I was thinking the same way and did some measurements for all the springs on my pump markers. Then I went spring shopping and couldn't find anyone that had those sizes as open stock.

And what you're looking for to measure the "stiffness" is called the spring rate. It's the grams or oz or lbs or whatever per inch of compression.

You need to match the diameter, free length and rate to get the springs you want. Sorry I didn't do the measurements for the cocker ones or I'd include them.
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Old 04-08-2008, 05:31 AM   #3 (permalink)
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Well for newer cockers the spring dimensions are the same as nelson springs.

2.0" long, about 0.48" od, 0.375" id

As for being exact, it would depend on the spring. I've seen different lengths between different spring kits and even stock springs. Diameter is all the same. Different lengths of the same spring rate will cause differences in velocity.
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Old 04-08-2008, 06:08 PM   #4 (permalink)
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Spring rates are set by the overall diameter of the spring and the size of the wire and the number of turns. Small changes actually make a big difference. A couple of thou on the wire or a turn more or less is all it takes to go for a soft to a hard spring for our applications.
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Old 04-08-2008, 08:37 PM   #5 (permalink)
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After some looking and talking to places locally, I will bow to my cheapness and take the easy way and spend the money.
Thanks again for the info it did help some while trying to explain what I needed.
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Old 04-12-2008, 10:43 PM   #7 (permalink)
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Thats where I got my springs from great guy and very fast shipping. The details that led to this post need there own thread in the custom section when I get a chance, it will have pics too.
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