CW45 questions

[AFDoc]

So as you all know I've had a jamming problem when the second round tries to feed (http://kahrtalk.com/showthread.php?t=21135). I took it out again today and it's not improved after two trips to Kahr. Almost 500 factory new rounds through it so far. After cleaning it today I noticed something: the slide is much harder to rack after dry firing if I hold the trigger. If I let go if the trigger, it then racks easily. I checked out my PM9 and it doesn't matter if I'm holding the trigger all the way back or not, the slide racks easily.

So my question is for those with CW45's; Is the slide harder to rack when you hold the trigger back after dry firing?

[wyntrout]

Why would you want to hold the trigger back after pulling it... except to remove the slide?? That's just not "normal"!

Wynn:)

[Gringo Pistolero]

Why would you want to hold the trigger back after pulling it... except to remove the slide?? That's just not "normal"!

Wynn:)

As part of a function check...

And to the OP, my CW45 is not noticeably harder to rack with the trigger to the rear.

Chuck

[ParanoidMedic]

As part of a function check...

And to the OP, my CW45 is not noticeably harder to rack with the trigger to the rear.

Chuck



Mine to.

[AFDoc]

Wynn, I doubt I'm quick enough to let go of the trigger before the slide starts moving back when live firing. So even though I'm not going to hold the trigger for a long time after firing, I'm betting the slide will have started moving back before I reset the trigger. If that's the case, perhaps this extra force that I'm finding is required to pull the slide back with the trigger back is messing up the timing of the motion during live fire and thus not getting a proper feed. I don't know why that would occur only (usually) on the second round fired from a full magazine but that's why I'm on here asking the questions.

Thanks Chuck and ParanoidMedic for the input. My PM9 doesn't require any extra force with the trigger back either.

I've also just noticed that the rear of the slide lifts up when I pull the trigger. I'm thinking there is something with the trigger bar or the groove in the slide that the end of the trigger bar rides in.

[yqtszhj]

As part of a function check...

And to the OP, my CW45 is not noticeably harder to rack with the trigger to the rear.

Chuck

Mine is not different either. Sounds like maybe you're onto something.

[yqtszhj]

Hey, Just for kicks you may want to look at this new link. It may be no help but who knows. May be good to look for some problem with the trigger bar. I know I had initial problems with mine.

http://kahrtalk.com/showthread.php?p=279144&posted=1#post279144

[Ed Ueberall]

Just checked mine. No difference in the force required to rack the slide either with or without holding the trigger back. :Amflag2:

[gb6491]

So as you all know I've had a jamming problem when the second round tries to feed (http://kahrtalk.com/showthread.php?t=21135). I took it out again today and it's not improved after two trips to Kahr. Almost 500 factory new rounds through it so far. After cleaning it today I noticed something: the slide is much harder to rack after dry firing if I hold the trigger. If I let go if the trigger, it then racks easily. I checked out my PM9 and it doesn't matter if I'm holding the trigger all the way back or not, the slide racks easily.

So my question is for those with CW45's; Is the slide harder to rack when you hold the trigger back after dry firing?
Mine was. Here's my thoughts on this and what I did.
When you hold the trigger back after pulling it to release the striker, the trigger bar stays in contact with the cocking cam. The lobe on the cocking cam slightly overlaps the trigger bar at this point. Racking the slide, while maintaining this condition, forces the trigger bar down which further rotates the cocking cam. What I found was that the lobe on the cocking cam that raises the striker block was pinned against the bottom of the slide directly to the rear of the slide block. My first thought was that this makes it difficult for the cam to rotate enough for the the trigger bar to clear it (which also makes the trigger bar harder to push down, making the slide harder to rack). I checked for and cleaned up a burr around the lip of the hole that the striker block sits in. This helped some, but was not a dramatic improvement. I then thought to look at the striker block (as the lobe also rotated against it), so I replaced it with another I had on hand. This dramatically improved how easily the slide racked: effort was now about the same as when done with the trigger released (trigger bar is not in contact with the cam in that condition).
My conclusion (FWIW): the shape/size of the striker block lobe on the cocking cam. the size/shape of the striker block, or the slide could all be contributing factors if this condition exists on your pistol. As the striker block was the remedy on my CW45, I would suggest swapping it out for another (the PM9's should work) to see if this would give similar results. The other components would be better addressed by Kahr or a gunsmith.
http://i43.tinypic.com/fm2ngj.jpg
http://i40.tinypic.com/2cf4bvq.jpg
http://i39.tinypic.com/15qcj0h.jpg
Regards,
Greg

[TucsonMTB]

Ya' know, it is a shame that we rubes here in "the colonies" do not have a tradition of "knighting" individuals who demonstrate outstanding talent and achievements.

If we had, I know of a candidate. Nicely done, Sir Brannon!

http://lib.store.yahoo.net/lib/carenginecare/accolade-leighton.jpg

[AFDoc]

I had to read it a couple of times and then compare, again, the PM9 (which functions perfectly) and the CW45. I can see now where the cocking cam comes considerably higher (and above the top of the frame) when the trigger is pulled on the 45 versus the 9; I also note that the back end of the trigger bar goes down more on the 9 when the trigger is pulled. The CW45 is pictured first:

[AFDoc]

And with the trigger relaxed, the back of the trigger bar seems higher on the CW45, which is the first picture. I'll be contacting Kahr with this new info and forward your info and hopefully get this thing running better. Thanks again!

[AFDoc]

Heard from Jason today and he concurs that the cocking cam is sticking up too high so off it went back to Kahr this afternoon.

[yqtszhj]

You have some perseverance there AFDoc.