Why...... on dremel fix?

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  • Fearthepack
    XStremely XSive
    • May 2012
    • 255
    • Orlando, Fla.

    #1

    Why...... on dremel fix?



    I ask this after i did the fix.
    1979 F worst one i could find
    to convert into a bobber/ streetfighter!
    _________________________________

    We can't all get along!
  • motoman
    Master of XSology
    • Aug 2005
    • 8413
    • Grand Junction, Colorado

    #2
    What your missing is contact load needs to spread across the whole face of dog ear. The gear pictured needs excessive material removal to accomplish that, and if re-used after correcting, full throttle speed-shifts would be its demise in short order.
    BTW, never seen dog-ears in that sorry of condition....they are badly 'hammered'.
    81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

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    • Fearthepack
      XStremely XSive
      • May 2012
      • 255
      • Orlando, Fla.

      #3
      But... contact on 2nd gear slots is only 2 washers deep right? not across entire dog ear.
      1979 F worst one i could find
      to convert into a bobber/ streetfighter!
      _________________________________

      We can't all get along!

      Comment

      • crazy steve
        XS-XJ Guru MODERATOR
        • Jan 2009
        • 7932
        • Beautiful outer Yelm, WA

        #4
        If the shift drum/shift forks are good, those dogs will engage about 2/3 of their height. And while those are bad, they still should be usable with proper grinding.
        Fast, Cheap, Reliable... Pick any two

        '78E original owner - resto project
        '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
        '82 XJ rebuild project
        '80SG restified, red SOLD
        '79F parts...
        '81H more parts...

        Other current bikes:
        '93 XL1200 Anniversary Sportster 85RWHP
        '86 XL883/1200 Chopper
        '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
        Cage: '13 Mustang GT/CS with a few 'custom' touches
        Yep, can't leave nuthin' alone...

        Comment

        • motoman
          Master of XSology
          • Aug 2005
          • 8413
          • Grand Junction, Colorado

          #5
          Originally posted by Fearthepack
          But... contact on 2nd gear slots is only 2 washers deep right? not across entire dog ear.
          Not sure what you mean with the 'washer deep' thing. I can tell you though, my Venturer tranny has FULL dog engagement, flush with backside of slot with NO washer swap when I 'corrected' the dog-ears. Unusual compared to others, but possible machining measurments during fabrication resulted in FULL engagement of that particular assembly. That trannies dis-engagement issue was a result of shaft retaining bolt/washer coming loose and falling out......makes for a 'floating' sideways shaft assembly, consequently also partial engagement, rounding off the edge end of dogs.
          81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

          Comment

          • BillyRok
            XStremely XSive
            • Aug 2011
            • 420
            • Shortsville, NY.

            #6
            Here is your answer -- Mack posted this a couple weeks ago. He mounted 2nd and 5th gears on the counter shaft after swapping the washer, then bolted the shaft back in its normal position in the case. You can see the shift drum and fork back where they normally sit in the case as well. When the transmission is shifted into 2nd gear, the engagement between 5th gear dogs and 2nd gear slots is as seen in the pic.

            [IMG][/IMG]
            Billy

            1982 XJ1100, Ceramic Coated Headers, Raptor ACCT, Barnett Clutch Springs, Dremmel Fix, TC's Fuse Block, De-Linked S/S Brake Lines, 850 Final Drive, Yahman's YICS Eliminator, Pods, stock jets

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            • Fearthepack
              XStremely XSive
              • May 2012
              • 255
              • Orlando, Fla.

              #7
              yes indeed that pic shows full engagement of the dog and the slots. i was under the impression only the rounded (worn) area of the dog makes contact with the slots, I will play with the shifting before I button things up to further any conclusion on the contact area. Thanks for your point of view seems like I have read a lot on contact points and formed this opinion that swapping the washer on 2nd gear doubles this tiny contact area of dogs and slots of 2nd/5th.
              1979 F worst one i could find
              to convert into a bobber/ streetfighter!
              _________________________________

              We can't all get along!

              Comment

              • Fearthepack
                XStremely XSive
                • May 2012
                • 255
                • Orlando, Fla.

                #8
                With the pic it is hard to imagine the flex that must happen to start rounding off the dogs in the first place. Doesn't seem to be any where near the movement internally to cause the rounding of the dogs. But.......... it's there somewhere.
                1979 F worst one i could find
                to convert into a bobber/ streetfighter!
                _________________________________

                We can't all get along!

                Comment

                • BA80
                  Doctor of XSology
                  • Oct 2010
                  • 9980
                  • Tulsa, Ok

                  #9
                  Do it the way you think will work, then go back and do it the way we KNOW it works.

                  Let us know how it turns out.
                  Greg

                  Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

                  ― Albert Einstein

                  80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

                  The list changes.

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                  • Fearthepack
                    XStremely XSive
                    • May 2012
                    • 255
                    • Orlando, Fla.

                    #10
                    No just looking at the big picture trying to understand the workings to see weaknesses vs strengths. I'm on XS1100 side always. it's help is monumental
                    1979 F worst one i could find
                    to convert into a bobber/ streetfighter!
                    _________________________________

                    We can't all get along!

                    Comment

                    • Fearthepack
                      XStremely XSive
                      • May 2012
                      • 255
                      • Orlando, Fla.

                      #11
                      This is where my confusion set in.... post #5

                      1979 F worst one i could find
                      to convert into a bobber/ streetfighter!
                      _________________________________

                      We can't all get along!

                      Comment

                      • BA80
                        Doctor of XSology
                        • Oct 2010
                        • 9980
                        • Tulsa, Ok

                        #12
                        trbig was just using the washer to show how little of the dog engages BEFORE moving the washer to the other side of the gear. That washer isn't even part of the transmission it was meant merely as a visual aid.

                        Sorry if I came off as a smart a$$, it's just me.
                        Greg

                        Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

                        ― Albert Einstein

                        80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

                        The list changes.

                        Comment

                        • Fearthepack
                          XStremely XSive
                          • May 2012
                          • 255
                          • Orlando, Fla.

                          #13
                          All good! I'm going to just install 2nd with washer swap and 5th on the counter shaft, put back into the bike with shift fork to see how much of dog ear really contacts the slots.............. I'm guessing not a lot, would be nice to be wrong in this situation.
                          1979 F worst one i could find
                          to convert into a bobber/ streetfighter!
                          _________________________________

                          We can't all get along!

                          Comment

                          • Rasputin
                            XS-XJ Super Guru
                            • Apr 2008
                            • 3179
                            • Lacombe, Alberta, Canada

                            #14
                            The wear on the dogs comes from the motion of them shifting in and out of gear. Once it is solidly set in gear, it will not slip. The things will take millions of gear shifts if they all were 100% efficient. They are not and the riders ability does create a part of the problem.
                            Thing is that thousands before you have had the issue and have fixed it using the advice here. Miss a couple of shifts or get lazy shifting and all bets are off.
                            2-79 XS1100 SF
                            2-78 XS1100 E Best bike Ever
                            80 XS 1100 SG Big bore kit but not fully running yet.
                            Couple of more parts bikes of which 2 more will live!

                            Comment

                            • Fearthepack
                              XStremely XSive
                              • May 2012
                              • 255
                              • Orlando, Fla.

                              #15
                              Indeed. I'm not questioning the fix (i already performed it the dremel way) it's just I was scared to work on the tranny and put it off! Now I find it a little fascinating so instead of just putting it back together I'm getting a good handle on how everything works together in there and study it's week links.
                              1979 F worst one i could find
                              to convert into a bobber/ streetfighter!
                              _________________________________

                              We can't all get along!

                              Comment

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