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Old 06-21-2014, 02:51 AM   #201
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The S&W parts work just fine but the safety plunger may be more pointy than your old one.
.
The extractor spring has two ends so you may have some slide closure issues. Just don't intutively stretch the recoil spring or you'll be on a slippery slope to drilling, milling and welding...
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Old 06-21-2014, 10:07 AM   #202
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The problem with stretching a spring, particularly if the stretch is excessive (adding 1/4" to an already short, tightly wound spring), is that you, more than likely, exceeded the elastic limit of the spring wire. If you go too far (yield point), the molecular characteristics of the spring will change, permanently, and the spring may actually fail in normal use. I'd keep a close eye on that spring for a while.


The extractor spring is a high-ratio coil - the diameter of the wire is large in relation to the the spring coil diameter. It is only about 3/8" long, to begin with and stretching it by 1/4" adds more than 50% to its length:


When it is re-compressed, it may come out shorter than it was before it was stretched and the spring constant will be lower.

Not that I'm recommending it but, Wolff sells a spring service pack (~$15) that includes the following (if you call them, you may be able to get just the springs you need):

Quote:
Service Pak Type I - Contains the following springs to return pistol to original factory condition: recoil spring, firing pin spring, hammer spring, extractor spring, magazine catch spring, trigger guard spring and hammer block spring.
Link: Springs for WALTHER PPK & PPKS 9mm (.380) Semi-Auto Pistols
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Old 06-21-2014, 10:28 AM   #203
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Moved to sticky.... M1911
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Old 06-21-2014, 12:31 PM   #204
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Moved to sticky in FAQ section... M1911
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Old 06-21-2014, 12:52 PM   #205
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@1911M

The extractor/safety plunger assy is the same on my '89 IA pistol, although the tip of the plunger on mine is slightly "swage-rounded" from use. It looks like the detent wells in the safety cylinder were done as part of the original casting, not machined on mine (as well as yours) - note the similarity in surface texture to other, non-machined, parts of the safety cylinder.

It is possible that they may have glass or micro-shot peened the thing to work-harden the surface and produce that texture.
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Old 06-21-2014, 12:52 PM   #206
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@1911M

The extractor/safety plunger assy is the same on my '89 IA pistol, although the tip of the plunger on mine is slightly "swage-rounded" from use. It looks like the detent wells in the safety cylinder were done as part of the original casting, not machined on mine (as well as yours) - note the similarity in surface texture to other, non-machined, parts of the safety cylinder.

It is possible that they may have glass or micro-shot peened the thing to work-harden the surface and produce that texture.
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Old 06-21-2014, 01:21 PM   #207
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1917-1911M, your photo shows the plunger aligned at a ninety degree angle with the detent.

Please note, the hole in the slide running back from the extractor to the detent is not parallel to the surface of the slide.

Therefore, the angle formed between the plunger and the detent is obtuse, not ninety degrees.

Drilling at ninety-degrees to deepen the detent will create (worsen?) an alignment problem.
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Old 06-21-2014, 01:21 PM   #208
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1917-1911M, your photo shows the plunger aligned at a ninety degree angle with the detent.

Please note, the hole in the slide running back from the extractor to the detent is not parallel to the surface of the slide.

Therefore, the angle formed between the plunger and the detent is obtuse, not ninety degrees.

Drilling at ninety-degrees to deepen the detent will create (worsen?) an alignment problem.
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Old 06-21-2014, 01:22 PM   #209
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double post for some reason

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Old 06-21-2014, 01:22 PM   #210
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That sounds good to me Kurt. The part does look blasted by something although the working edge of the detent looks like it was cut roughly by something.

Check it out...this one is for Pilotsteve......guaranteed to flip him out. He will be OK by Monday morning I expect....then again, perhaps not. M1911

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