Compression Coil Spring Help

[BigBoy1]

I'm placing this in both the General and Gunsmitihing forums to increase the chances of finding the spring I need.

I have been give a rifle to repair. Parts have long become unavailable for it. The reason I took on the task to repair it becasue I have one exactly like it and mine has all the missing parts. I have made the missing parts but now have come to the point of needing the very small extractor compression coil spring.

The extractor coil spring I need is. 0.525" long (free length), outside diameter 0.112", has 13 coils and the wire diameter is 0.014". I have no equipment to messure the spring constant for the spring I have but that would be a needed bit of information.

I have ordered a spring that was close dimensionally from Small Parts but is way too "squishy". It doesn't have enough strength to function properly.

Does anyone know of a place that I can find a spring that will work? I have looked at the Brownell's catalog but didn't find anything. Thanks.

[Bob Ford]

http://www.use-enco.com/CGI/INPDFF?PMPAGE=756
These are the same spring assortments that Brownel's have. I have sets from Enco and Brownel's.

Bob

[Bob Ford]

http://www.brownells.com/.aspx/cid=0/k=coil+spring/t=P/ksubmit=y/Products/All/search=coil_spring
Here is Brownell's spring assortments.

[knedvecki]

Machinery's Handbook has mandrel sizes for winding your own springs. And you May be able to get some music wire of the correct diameter, in 2 - 3 foot lengths from your local Ace Hardware, (that is where I get mine). Or you can get the proper heat-treatable wire, (we made springs for aircraft), wind it on the mandrel, heat treat it, (usually a low heat, 350 to 700 deg. F), and grind the ends flat. I do not recall the S.A.E. classification of the wire that we used, as it is in my notes from 29 years ago, somewhere....

Regards, Keith

[mf205i]

Music wire is available at most hobby shops. Get an assortment and your oddball spring and small pin problems are solved.
Mike

[Al Messer]

Try your local locksmith as they use lots of compression springs in lock tumblers.

[Nick Carter]

Sounds like the first spring I wound recently:
http://anotherairgunblog.blogspot.com/2009/09/slavia-630-snatching-defeat-from-jaws.html

Scroll down the post to the middle. It was relatively painless but it helps to have extra spring wire on hand for when you screw up...

[HarryG]

You might look here:
http://www.leespring.com/

[JCHannum]

I keep a supply of music wire of various sizes on hand and usually make my own springs as needed. This is a very good tutorial on spring making;

http://home.earthlink.net/~bazillion/intro.html