Problems gapping points on QD-19

Home › Forum › Ask A Member › Problems gapping points on QD-19

Viewing 10 posts - 1 through 10 (of 28 total)
1 2 3
  • Author
    Posts
  • May 4, 2020 at 10:13 pm #202027
    RetiredGunny
    Participant

      Just replaced the points, condenser on my QD-19. I used the OMC kit with points (580148). Here’s my problem: (1) Using my timing tool, placing the pointer between the marking points, using a multi meter with audio, and turning the adjusting screw, the points move back and forth but do not open always having continuity. (2) Not using the timing tool, at the widest point of the cam, my points will not open to .020.
      I have played for 3 days, replaced screws, fiddles with the points, I figger three things: (1) the new points are bad, (2) filing down the points themselves, but shouldn’t have to do that on new points or (3) the rubbing block is too small. I’ve used two different set of points.
      Any ideas I sure would appreciate it!

      May 4, 2020 at 11:13 pm #202030
      h20lew
      Participant

        US Member

        So I just tried this myself tonight on an RD-21 and have to say it never seems to be as convincing as I’d like it to be. The books commonly gloss over this – but it does seem like there is a bit more of finesse required than they let on. What sort of seemed to work for me was to make sure the eccentric screw was most of the way down and then have the retaining screw tight enough to hold the base but still able to move the base if you push on it. I pushed the base towards the condenser to give enough space to make a gap and let the eccentric screw do it’s job to shrink or widen that gap. I still wasn’t entirely convinced I got it and still think there is some magic I’m missing. If I don’t have it right when I test fire tomorrow I’m going back to the feeler gauge and maybe figure out the correct position with the timing tool vs trying to figure out when exactly the lobe on the timing cam is at its highest.

        May 5, 2020 at 12:03 am #202031
        crosbyman
        Participant

          Canada Member - 2 Years

          Btw with the meter /tone method you don’t need .020…. the moment you lose tone is perfect. That is exactly when the points open and cause the collapse of the magnetic field and ignition spark

          http://www.youtube.com/watch?v=ga1Cjymj6ms&feature=youtu.be

          Joining AOMCI has priviledges 🙂

          May 5, 2020 at 12:26 am #202034
          crosbyman
          Participant

            Canada Member - 2 Years

            BTW if you still have the old points which presumably were simply used…. compare your new points to the old set

            I for one, seem to recall a set of points which had a shorter rub arm. Sounds crazy but tue ….. in any event just compare old and new points…..

            keep us posted on progress

            Joining AOMCI has priviledges 🙂

            May 5, 2020 at 2:55 am #202037
            frankr
            Participant

              US Member

              I’ve heard complaints that the new points today aren’t what they used to be, quality-wise.

              May 5, 2020 at 6:53 am #202042
              oldemtr
              Participant

                I’ve had this same problem with a set of new points.

                May 5, 2020 at 8:57 am #202050
                RetiredGunny
                Participant

                  Thanks for the video. Believe me, I’ve watched this 20 times and many others. This is what makes me think my points are faulty cause I’ve followed these and others to the “T”. I’ve ordered some Sierra points to see if maybe there’s a difference. Unfortunately, I deep sixed the old ones and cannot reuse. I’ll re-post when I get the Sierra’s. Thanks everybody for the comments.

                  May 5, 2020 at 10:10 am #202056
                  crosbyman
                  Participant

                    Canada Member - 2 Years

                    please perform autopsy when you get the new points…. we all need to know… hopefully the new points will work 🙂

                    Joining AOMCI has priviledges 🙂

                    May 5, 2020 at 10:30 am #202057
                    squierka39
                    Participant

                      US Member

                      Throw put the new junk point set, put the old ones back in. This happens way too often. Old points unless very worn down or pitted will be better than the new ones.

                      Edit, I see you threw out the good ones. Oops.

                      • This reply was modified 4 years ago by squierka39.
                      May 5, 2020 at 11:27 am #202066
                      Mumbles
                      Participant

                        If you remove the small adjusting cam screw, you should be able to set the new points correctly with a bit of prying.

                      • Author
                        Posts
                      Viewing 10 posts - 1 through 10 (of 28 total)
                      1 2 3
                      • You must be logged in to reply to this topic.