Spring replacement

[Slick]

Don't forget to make sure the grip screws are tight.  They do come loose.

[Savior_6]

kwesi, a bit late on the reply, but the Pup seems to be working fine. I had a buddy of mine give it a go, but we only had about 1/2 an hour to work with at the range so he only did a few rounds for fam fire. I'm positive that the problem was solved as I notice the problem during manual cycling of the slide and have not felt the same problem since.

[mefly2]

May I ask at what OAL measurement the spring sho8ld be replaced; my new / removed from pistol spring measures 1.5065 inches ?

[tracker]

I don't think this is an exact science: 200 rds. or whenever you feel you need it; for example, someone asked if they should change the spring after not firing it for two years: probably so.

[mefly2]

I'll still hold out for some dimensional numbers.  The recoil impulse will be different with regard to CBon light mass HP rounds versus 147 grain FMJ rounds.  Likely that is some of the variance/wear between changing out the main recoil spring at 100 rounds versus the previously stated 500 rounds.  The pistol is designed for serious social encounters and I would like to know the criteria for spring evaluation rather than a variable round count.

It is akin to saying that a Rolex needs service at a specified interval as well versus automatically replacing the mainspring at x-years of use.  As a leo, it would be more comfortable knowing the length criteria for change as opposed to number of rounds ... sometimes that count is easily lost.  I will measure & post my spring lengths at various intervals - but that will not take into account variations in wear due to differences in cartridge manufacture / mass of bullet / velocities. Thanks for your input.

[Chinook]

I just did a spring replacement after about 200 rounds.  I've changed the spring before but never measured it.

My old spring was approximately 1/8" shorter than any of my new ones.  My new ones are 1 19/32".

It would be interesting to measure a given spring after 50, 100, 150 and 200 rounds to see if the shortening is linear.  That would be pretty easy to do for me as I seldom shoot more than 50 rounds at a time and I always (OK, usually) clean after shooting.  But don't watch this space; I'm not very reliable these days (ask my wife...).

Regards

[Writer_Ron]

I've been meaning to ask ... does racking the slide (which obviously compresses the spring) count as a "round"? AFAIK, compression coil springs don't wear out unless repeatedly compressed into a "solid," which must happen during an R9's recoil.

Ron

[tracker]

I don't change the spring on the number but just check the length of the spring compared to a new one. Recently, I changed one at about 150 rds. It is mildly irritating that these springs must still be changed so frequently.

[Chinook]

At what delta-length do you change the spring?  Mine was only 1/8" less; would you have changed that one?  Thanks

[kjtrains]

I probably would have, although don't think it would be necessary.  I would go by the round count; now that's just me.  In your case, since I had it out, I would have changed it just because I knew it was shorter.  

A comment on Ron's question on racking the slide.  I have heard that you should count racking the slide as a round, but whose counting.  Others may disagree and that's OK.  

[ultrared]

Does the same rule of spring replacement apply to the .380 cal. pistols?

[FloridaCCW]

no  

[kjtrains]

ultrared.  Welcome to the Forum.  Post often.

[Richard S]

Carter, When you start shooting and carrying the pup, the spring replacement issue will be forgotten. it's a good idea to order some extra springs. Bond should also replace his PPK for the R9s like the other agent.  Tom

This agent?  

[kjtrains]

I believe that's the one!