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Moving Triangle Backwards


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  • Moving Triangle Backwards

    Those of you who have followed my two threads about the 2-lane 8290 nightmare I have had will know what I'm talking about. I have finally gotten the table to spot without wobbling, but the pins are all off spot about 1/2" too far forward. All table adjustments are good. I plan on moving the triangle backwards to compensate. Will I lose any adjustments besides the respot and spot rod adjustments?????

    Thanks in advance.

  • #2
    Re: Moving Triangle Backwards

    Hi Joe! Sorry I've been off-line for so long.
    To move the entire set back, you're going to shorten the spotting rod. Now, this will not affect toe (which is essential for non-wobble), but as you shorten the rod, your spotting hook (latch) gap at the front arm will be reduced. It's possible you'll run out of "hook". If you do, the hook will not be able to drop down and latch the arm. If you are able to keep enough hook, the next problem may be that the cups won't clear the bellies of the pins as they pull back.
    Normally you'd be able to compensate for cup clearance by opening up the cup gaps, but this will set the pins a little forward, and you may be right back where you started.

    As to the setting of the machine frame, it could be that they are in the wrong fore-aft position with respect to the 7-10 line. Using a 4' straightedge or level, extend the center of the 7-10 spots to the kickback, plum up the side, and mark this location on the top of the kickback.
    From the back of the lower frame member (where it bolts to the back end unit), measure forward 6-1/16" and scribe a vertical line into the side of the frame. The scribe line needs to meet at the 7-10 line. That's your front-to-back positioning spec.
    Now set the height so that the bottom of the frame
    is 19" from the height of the pin deck surface (plus or minus 1/8").

    No flags? Run a string (or use a straightedge) from the rear #1 respot cell frame mounting screw to its front screw. Do the same to the 7 or 10 cell. This will get you correct left-to-right. Do similarly from the finger pivot pin on the cell frame to the mounting screw opposite it for forward positioning.

    Good Luck. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]


    • #3
      Re: Moving Triangle Backwards

      B.E.; Front Roller, Updates {or s--- canned}?? Been There Done That............... :p
      If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it." -W.C.Fields


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