Announcement

Collapse
No announcement yet.

Speedo drive kaput?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Speedo drive kaput?

    Worked one day, didn’t the next. First suspect was cable, was surprised it wasn’t. Spin the wheel and drive doesn’t turn.


    54600-18403 is @$51 new, @$21 used on eBay. Or do I try to take it apart and see if I can fix it? Anyone ever fixed one?
    Rich
    1982 GS 750TZ
    2015 Triumph Tiger 1200

    BikeCliff's / Charging System Sorted / Posting Pics
    Destroy-Rebuild 750T/ Destroy-Rebuild part deux

    #2
    Good sleuthing.

    I've never taken a speedo drive apart but at this point you have nothing to loose. I'd go for it and see what you find...
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    Comment


      #3
      I've had one apart before, there really isn't much inside there that can go wrong. My guess is it's more likely to be the tab where it catches the wheel that's broken. Either way it goes you'll have it off anyhow and all it takes is slipping off a retainer ring to see what's inside and give it a fresh dab of grease.
      1980 Yamaha XS1100G (Current bike)
      1982 GS450txz (former bike)
      LONG list of previous bikes not listed here.

      These aren't my words, I just arrange them

      Comment


        #4
        I have worked on several, managed to get a few of them working again.

        In the picture shown, note that there are a couple of notches in the ring around the drive. Use snap ring pliers to unscrew that, you can then extract the drive screw. On the flat side (next to the wheel) you can remove the snap ring and remove that plate and the drive mechanism.

        The gears might be worn a bit, simply requiring some position adjustment, or they might be worn enough to justify replacement.

        As Nessim's signature says: "To measure is to know." (Thanks, Ed, I use that ALL the time. )

        .
        sigpic
        mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
        hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
        #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
        #2 son: 1980 GS1000G
        Family Portrait
        Siblings and Spouses
        Mom's first ride
        Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
        (Click on my username in the upper-left corner for e-mail info.)

        Comment


          #5
          Same; I've gotten a few of these working again after someone mashed the drive tabs by reinstalling the front wheel wrong. With a bit of judicious tapping and tweaking, you can straighten the washer and tabs. However, if it's been ridden in that state it could be beyond recovery.

          If the gears inside are chewed up there may not be much you can do, but they're very easy to disassemble. Might as well take a look, clean it up and grease the innards and see what happens.
          1983 GS850G, Cosmos Blue.
          2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
          2015 Yamaha FJ-09, Magma Red Power Corrupts...
          Eat more venison.

          Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.

          Celeriter equita, converteque saepe.

          SUPPORT THIS SITE! DONATE TODAY!

          Get "The Riding Obsession" sport-touring motorcycling podcast at https://tro.bike/podcast/ or wherever you listen to podcasts!

          Comment


            #6
            Thanks all, will disassemble tomorrow and see what I see. There were Christmas decorations she said needed hanging, leftovers that needed eating, now a new Mandalorian that needs watching.
            Rich
            1982 GS 750TZ
            2015 Triumph Tiger 1200

            BikeCliff's / Charging System Sorted / Posting Pics
            Destroy-Rebuild 750T/ Destroy-Rebuild part deux

            Comment


              #7
              sigpic
              When consulting the magic 8 ball for advice, one must first ask it "will your answers be accurate?"

              Glen
              -85 1150 es - Plus size supermodel.
              -Rusty old scooter.
              Other things I like to photograph.....instagram.com/gs_junkie
              https://www.instagram.com/glen_brenner/
              https://www.flickr.com/photos/152267...7713345317771/

              Comment


                #8
                Thanks Glen, just what I was looking for.
                Rich
                1982 GS 750TZ
                2015 Triumph Tiger 1200

                BikeCliff's / Charging System Sorted / Posting Pics
                Destroy-Rebuild 750T/ Destroy-Rebuild part deux

                Comment


                  #9
                  So on initial teardown, clearly a clean and regrease, at least, was in order:


                  All the parts all cleaned up:


                  After re-greasing and reassembly, I could not keep the gears engaged beyond a couple of careful turns. Very close inspection of the underside of the inner tabs revealed why. Those tabs that need to engage the cutouts in the drive ring have sheared and developed a ramp that won’t let them stay in the cutouts:


                  So, after starting to look for the cheapest replacement on eBay, an idea hit me. The flip side of those inner tabs are still perfectly square. So I took a hammer to the tabbed washer and bent the outer tabs 180deg the other way so I could mount the tabbed washer with the good face of the inner tabs secure in their cutouts. Initial spins of the drive prove positive. I’ve remounted the wheel and am about to go for a ride. Pretty sure I’ve got it. Won’t be the first time I’ve used and hammer and anvil to fix something on my bike.
                  Last edited by Rich82GS750TZ; 11-28-2020, 02:17 PM.
                  Rich
                  1982 GS 750TZ
                  2015 Triumph Tiger 1200

                  BikeCliff's / Charging System Sorted / Posting Pics
                  Destroy-Rebuild 750T/ Destroy-Rebuild part deux

                  Comment


                    #10
                    It works! Up to 85 mph anyway

                    Thanks all!
                    Rich
                    1982 GS 750TZ
                    2015 Triumph Tiger 1200

                    BikeCliff's / Charging System Sorted / Posting Pics
                    Destroy-Rebuild 750T/ Destroy-Rebuild part deux

                    Comment


                      #11
                      Winning
                      sigpic
                      When consulting the magic 8 ball for advice, one must first ask it "will your answers be accurate?"

                      Glen
                      -85 1150 es - Plus size supermodel.
                      -Rusty old scooter.
                      Other things I like to photograph.....instagram.com/gs_junkie
                      https://www.instagram.com/glen_brenner/
                      https://www.flickr.com/photos/152267...7713345317771/

                      Comment

                      Working...
                      X