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Saving a 1935 Scout case half

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  • Saving a 1935 Scout case half

    This 1935 Sport Scout lh case had most all of the threads for the main race retaining nut broken off. I welded and machined one of these once! Never again everything moves and warps when you start in that area. So a new technique.
    I turned all the threads off then turned the od to accept a sleeve

    I made a sleeve but left enough on the end to thread 2" 16 left hand

    Then I made some male 2" 16 left handed threads and parted a nuts worth off with my hightech parting tool.

    Then using the threaded sleeve as a fixture I bored the nut to size and cut the left handed thread that acts as an oil seal in this engine.

    Then I heated the sleeve to 950 degrees f and slid it into place let it cool and torqued and staked the nut.

    Other than the fact it will rust I suspect way better than original and its all straight
    Dusty



  • #2
    So awesome to see these old cases saved with some solid craftsmanship
    Posts while cruisin....

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    • #3
      Yes! Always love the knowledge you share!

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      • #4
        Dam I just noticed that lots of the broken stuff under the table showed in the last pic. I was kinda feeling like I was making a little progress until I saw that.
        Dusty

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        • #5
          Awesome work Dave

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          • #6
            I want a ‘35 sport scout mountain bike. I know a Chief is easier to find parts for and the 101 is a better bike (and Chout candidate) and the 41 has the skirts but damn...

            That 35 rules


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            • #7
              Originally posted by Madrivermoco View Post
              I want a ‘35 sport scout mountain bike. I know a Chief is easier to find parts for and the 101 is a better bike (and Chout candidate) and the 41 has the skirts but damn...

              That 35 rules

              Ya oughta start collecting parts, I built this one almost completely out of ebay and swap meet parts. https://photos.app.goo.gl/XHx4DZtkDZGyLdMk8 Don't know for sure but have less than two grand in it. The only really expensive part was the T&O flywheels. Using the 741 cylinders & heads saved a small fortune and the vertical twin frame saved another small fortune.
              Dusty

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              • #8
                That is pretty bad ass. good work.

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                • #9
                  The other case half I'm going to use with the 35 left side is probably 39 or later if the pushrod guides are original to it. It had a tiny crack .



                  Then I discovered that the pinion race bore is well machined just to an odd size that isn't available now if it ever was. So I started making a pinion race with a .0075 oversize OD.
                  This drill bit in rockwell 45 shaft is all the little Atlas Craftsman wanted even in back gear.

                  Dusty

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                  • #10
                    Forgot to get a shot of boring to size and parting. Boiled the case for 3 or 4 minutes and the race drove in at a medium hammer fit.

                    Dusty

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                    • #11
                      A little better picture.

                      Dusty

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                      • #12
                        You boiled the cases in water to get the race in? Thats something new. it makes sense.. Just never heard of it before .

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                        • #13
                          Straight out of the WW2 Indian Overhaul manual. A lo tech way of getting about 212 degrees fahrenheit. Bout 209 at my altitude.
                          Dusty

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