Recoil Spring Testers

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Recoil Spring Testers

Post by Magload on Fri May 05, 2017 10:26 am

Has anyone used a recoil spring tester and have any recommendations for one?  Brownell's sells one for Gov model 1911s but the reviews wasn't very good.  I made one myself for my SW MP recoil springs but it only works on them.  Wollf springs says that the tester needs to have 3 different index marks on it for the different sizes of 1911s.  I was hoping to also check my SW 52-2 recoil spring and also test other springs like mainsprings.  Might just have to get innovative and design a few more testers.  Don
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Re: Recoil Spring Testers

Post by Russ OR on Fri May 05, 2017 10:37 am

The one I got from Dillon comes with an electronic scale that doesn't stay at the last pull weight-not handy.  -- 

I made one (mechanical scale) that checks weight in full recoil, in battery, and for spring bind (w/ buffer). So far only 1 spring (don't remember which one) binds with a buffer in the pistol.

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Re: Recoil Spring Testers

Post by Russ OR on Fri May 05, 2017 10:39 am

I also made/marked a different rod to check conversion recoil springs

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Re: Recoil Spring Testers

Post by Wobbley on Fri May 05, 2017 11:27 am

The problem I see with how springs are rated, from a strict engineering standpoint, is two fold.  The ratings given are at what length?  

When I specified a spring in my work, it was specified as "X +/- x pounds at Y in and Z +/- z lb at W inches.  The Y and W were the expected operating range of the mechanism. It was never at solid or at free length. When someone says "I have a 12 pound spring" it means very little to me as there's no reference. 

Secondly, springs have a high tolerance band.  The force and rate tolerances can be as high as 15%.  Less if you pay premium prices.  

In bullseye, we choose springs to give function.  If your pistol isn't functioning change the spring.

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Re: Recoil Spring Testers

Post by willnewton on Fri May 05, 2017 12:07 pm

He doesn't have them listed right now, but save the link.  He makes a marked tester for recoil and hammer springs.  Also, some other neat reloading bits.  I have placed several orders from him and like the testers.

http://www.ebay.com/sch/rrpmi/m.html?_nkw=&_armrs=1&_ipg=&_from=
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Re: Recoil Spring Testers

Post by Magload on Fri May 05, 2017 1:59 pm

willnewton wrote:He doesn't have them listed right now, but save the link.  He makes a marked tester for recoil and hammer springs.  Also, some other neat reloading bits.  I have placed several orders from him and like the testers.

http://www.ebay.com/sch/rrpmi/m.html?_nkw=&_armrs=1&_ipg=&_from=
He does have some interesting stuff.  I will keep checking back on his site.  I agree just put the spring in the gun that works but I don't seam to get them put back into the right packages or relabel the package when I take the 10 out and put the 12 in the package.  Hey I been on retirement for 8 years and maybe getting a little bored but I like to tinker and a inquiring mind needs to know.  Don
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Re: Recoil Spring Testers

Post by Chris Miceli on Fri May 05, 2017 5:40 pm

I shoot with the nic Taylor 1911 recoil sprigs they are color coded
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Re: Recoil Spring Testers

Post by LenV on Fri May 05, 2017 5:50 pm

I only use it for reference. Because I get them mixed up too.
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Re: Recoil Spring Testers

Post by C.Perkins on Fri May 05, 2017 6:23 pm

That is one nice custom made spring tester.
And I bet it works too.

Clarence
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Re: Recoil Spring Testers

Post by djw1cav on Mon May 08, 2017 4:56 pm

Magload wrote:anyone used a recoil spring tester and have any recommendations for one?  Brownell's sells one for Gov model 1911s but the reviews wasn't very good.  I made one myself for my SW MP recoil springs but it only works on them.  Wollf springs says that the tester needs to have 3 different index marks on it for the different sizes of 1911s.  I was hoping to also check my SW 52-2 recoil spring and also test other springs like mainsprings.  Might just have to get innovative and design a few more testers.  Don
Don,
I added a red dot to my 1911 a couple of years ago and of course it would not cycle properly with the standard spring.  To make a long story short I ended up making a simple spring tester to help me tune the gun for the extra weight.  I have included some photos below.  I used a pipe nipple with a slot cut in it, an inexpensive scale, a 1/4# bolt and some hardware.  I marked a spot on the pipe cutout for four springs (1911, commander, nelson conversion and S&W model 52).  I double checked it against a known weight and it seems quite accurate (within 1/4 lb).
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Re: Recoil Spring Testers

Post by Magload on Mon May 08, 2017 6:13 pm

That is nice I think I will built one like it.  Thanks  Don
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