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CCM cocking rod too long?

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    CCM cocking rod too long?

    Hello, all. I have a CCM S5B (back block pump) that I recently acquired and it’s having a peculiar issue. The cocking rod cannot be adjusted short enough to properly set the gun’s timing. With the cocking rod nut factory set with red loctite, the front of the bolt had to travel nearly 1/2” behind the feedneck before the gun would cock. I loosened the nut and screwed it in all the way onto the rod to make it as short as possible. Now the gun cocks when the front of the bolt is 3/16” behind the back of the feedneck. Better, but still not right. I'm using a zip tie on the cocking rod right now as my temporary means of adjusting the timing properly.

    It’s literally as if the cocking rod is too long for this gun. The cocking rod with the nut removed is 3 3/4” long end to end and the distance between the threads on each end is 2 7/8”.

    I called CCM and they were stumped. I didn’t have the cocking rod measurements on hand for the CCM tech nor the serial number as I was at work when I called (so I’ll be calling him back on Monday with that info), but he did mention that CCM slapped together and sold a few S5 markers they had lying around their shop a couple years ago. And the seller did say that he bought this gun new in 2018, so my gun is probably one of those.

    I'm wondering if the S5B is supposed to have a shorter cocking rod than more modern CCMs. Does anybody else out there own an S5 with a back block? If you do, what is the measurement you have between the rubber bumper and the back of the threads on the front of your cocking rod?

    #2
    Yes. Every CCM cocking rod I've used (3 now) have been at least 1/8" too long and not threaded far enough down to adjust for correct cocking overtravel on an autococker. On pumps it doesn't matter and in fact having an overly long rod is fine because it won't hit your back block if your autotrigger timing is off (again, most CCM's I've seen have the AT timed to fire too soon).

    My Series 5 autococker had problems with not catching the sear if you released the trigger too slowly because the rod was too long. I got the knob loose on the threads and tried to adjust it down but no luck. Bought a new cocking rod just like the one shown (with the grooves instead of the knurling) and still the same issue. Used a WGP cocking rod with good success.

    Comment


    • Ghost Flanker
      Ghost Flanker commented
      Editing a comment
      Interesting. I never would have thought that. I may try cutting some more threads onto the end of the cocking rod then.

    • gabe

      gabe

      commented
      Editing a comment
      I'd try a shorter cocking rod before trying to add threads to an existing one. I bet a Lapco or WGP rod with the CCM knob on it would work fine.

    #3
    I have some cocking rods (just the rod) from Lapco. You can replace your existing rod and still use the same knob.
    Not 100% it will solve your issue, but it should.
    Need Inception Designs or Shocktech Products? Let me know!

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    Comment


    • Ghost Flanker
      Ghost Flanker commented
      Editing a comment
      Depends on the distance between the threads. Take a quick measurement of your cocking rod. If the smooth section between the threads is 2 and 9/16 inches or less, I'll buy one from you.
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