Changing from dry-fire mode to firing mode w/o discharging?

[3sevice]

I have a Walther CP2. In order to change from firing mode (F) to dry-fire mode (T), the gun must be cocked. When you change back to firing mode the gun discharges the CO2. Is there any way to avoid this, or is it a fact of life that when putting the gun back into Fire mode, the gun will discharge. Thanks for any help.

[Ed Hall]

If you are saying that simply changing from (T)raining to (F)ire discharges the pistol, then there is a problem - the striker is not held back. The gun should only discharge when in the Fire mode and the trigger is pulled. The T/F mode selector holds the striker away from the valve while in the Training mode. If the stiker is against the mode switch when changed, it can spring forward and hit the valve. That's why it must be cocked to move from Training to Fire. If you have it fully cocked and the striker releases from just switching modes, there's a definite problem. You might check the trigger group to make sure you have enough engagement in the cocked mode. Or provide some more info and I'll compare it to the one here.

Take Care,
Ed Hall
http://www.airforceshooting.org/
http://www.starreloaders.com/edhall/
http://www.geocities.com/ed_ka2fwj/

[Mike T.]

message deleted in view of Ed Hall's following message

[Ed all]

The book says, "Please turn the dry-practice trigger only in cocked position." The accompanying picture shows the lever in the up position, which is the best way to ensure it's cocked. However, as long as it is cocked, the position of the lever doesn't matter, although I too, always leave it up when switching. Physically, the mode selector is a rod that runs perpendicular to the striker and slightly off its center of travel. There is a channel cut through the mode rod such that the striker can travel through this channel while in the (F)ire mode. When the selector is turned to the (T)raining position, it rotates the channel out of reach so that the striker is blocked in its forward travel.

With the pistol cocked (at which point the position of the lever no longer matters), the mode selector is free to travel in either direction and nothing should happen other than the rotation of the selector rod. However, if the selector is in the (T)raining mode and the striker is forward, it is being held off the valve by the striker, and it is possible to turn the selector to (F)ire and have it discharge. If the selector is in the (F)ire position and the pistol has been fired, such that the striker is in its forward position, the mode selector cannot be turned to the (T)raining position because the striker is within the channel and prevents is rotation.

Take Care,
Ed Hall
http://www.airforceshooting.org/
http://www.starreloaders.com/edhall/
http://www.geocities.com/ed_ka2fwj/

[Mike T.]

Thanks for the correction and clarification, Ed. I've removed my erroneous message.

[3sevice]

Ed,
Thanks for the reply. Yes, when I am finished dry-firing, in order to put it back into (F) mode, I have to re-cock it. When I turn the allen wrench back to (F), it discharges. If I need to adjust the trigger to stop this, can you walk me through it? I don't have a manual for it, bought it used. Wonderful pistol, but I'd hate to not be able to dry-fire it. If I leave the cocking lever up, will that prevent it? It doesn't seem like that would make a difference. Thanks,

John

[Ed Hall]

Hi John,

I'm failing to understand how it can release the striker simply by turning the mode selector while cocked, but work fine for dry firing. The trouble with not being there... Anyway, here's something to try to begin with:

Starting with it in (T)raining mode, lift the lever to fully cock it and hold the lever there. Now move the selector to (F)ire. Slowly release the lever and see if it stays cocked. You should be able to tell the difference in spring pressure. If it stays cocked that way, next watch the lever (still in the up position without holding it) and turn the selector back to (T)raining and see if the lever stays up and remains cocked. Finally, if both of these stayed cocked, leave the lever up and switch back to (F)ire. See if the lever stays in place or springs forward. In all of the above mode switches the lever should have stayed up without springing forward or dispelling any CO2.

After we see how this test turns out (and I do some more thinking on the subject) we can move further and see what can be figured out.

The trigger adjustments are on this host's site in the TenP Files at this page:

http://www.pilkguns.com/tenp/spwacp2.htm

I don't know of any .pdf copies on the web, but maybe someone can chime in with one. I'll try to help as much as possible though the board, but there may be some time gaps here and there. Good luck with getting it figured out.

Take Care,
Ed Hall
http://www.airforceshooting.org/
http://www.starreloaders.com/edhall/
http://www.geocities.com/ed_ka2fwj/

[3sevice]

Ed,

Went through your procedures and everything works fine. I figured out that you do have to leave the lever up when changing to (F)ire. So now I can go back and forth between (T) & (F) without discharging. Thanks a lot for the help.

John

[Ed Hall]

Hi John,

I still think something may be amiss. The striker should stay cocked after the lever is lowered, until the trigger is pressed, not the mode switched. I do recommend doing the switching with the lever up, though. As long as you have a safe and legal procedure I guess you're set. (Discharging CO2 at an inappropriate time can cause penalty point reductions.) I'm glad to have been of help.

Take Care,
Ed Hall
http://www.airforceshooting.org/
http://www.starreloaders.com/edhall/
http://www.geocities.com/ed_ka2fwj/

[Mike T.]

Hmm, guess my memory is not so bad afterall! :-)

[Ed Hall]

I wondered why you had removed your message. I hadn't remembered anything wrong about it. I had just gone into more detail. The image shows the lever up with an arrrow pointing back, but the text merely says cocked. You can interpret the picture as indicating it should be left up, but the text doesn't say that (and physically, the lever shouldn't need to be left up). In the physical workings all that should be required is for the striker to be held back, which should stay that way until the trigger operation is performed. I can't envision anything that the selector can do to trigger the striker to release from cocked. It is the most basic cross rod with an allen hole in one end, a line in the other, a detent mechanism to hold it in either position and the perpendicular cannel to allow the striker through in the (F)ire position. Anyway, as long as John is all set, I guess I'll run off.

Take Care,
Ed Hall
http://www.airforceshooting.org/
http://www.starreloaders.com/edhall/
http://www.geocities.com/ed_ka2fwj/

[3sevice]

Yes fellas, it works great. Been dry firing for two days now. When you cock it to go from (T) to (F) you leave the lever up. After you turn it to (F) with the allen wrench, then you lower the cocking lever. No discharge. Then I can safely load and fire as normal. Thank you guys for your great input. Love this site.

John