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Resurrection of 46U2774

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  • Resurrection of 46U2774

    After years of inactivity, I have started the resurrection process of my 1946 Big Twin Flathead. Most of the job will be done by AntiqueBike in Sweden.

    I purchased the bike in 1970 and rode it regularly for five years. Started with a Steib sidecar.​​
    Had it during my internship in the Netherlands in 1970 and later during my vacation in Morocco in 1972.​​

    On my way back, in Madrid, I exchanged my Steib for a modified Harley sidecar.







    ​​

    ​​









    Started restoration in 1980 but career, kids and family took all my time. So now I am finally acting to get it back into a shape as similar as possible as it was when leaving the factory in May 1946.

    The post-war transition was, most likely, not straightforward at the factory. Chrome and rubber were scarce and much material from the war was used. I have only found reliable information in the Bruce Palmer book "How to restore your Harley-Davidson". But some information in this is not complete. So my first restoration problem has to do with the frame.

    According to Bruce's book, changes were made to the steering-head early 1946 (from 28 to 30 degrees), and after April 1946 the springer fork was off-set. From the book I can conclude that my 46U2774 was manufactured in May, just before chrome and rubber became available again. Bruce also states that the steering heads of 1946 either had die numbers 9, 11 or none. Some steering heads also had an upside-down ND. Strange thing then that my steering head (likely from Kropp Forge Co) has a die number 10 and a not up-side down ND. My frame is obviously a bit special, and this is why I wonder if the front-stay lumps emanate from the factory. So what does this mean that my steering head does have a die number 10 and a vertically aligned ND?

    ​​













    The lumps could, of course, also come from a frame repair, or a modification needed to attach the Steib sidecar.

    My frame will soon be sandblasted, so I will soon send more detailed pictures of these possible production anomalies. But until then, I would welcome any input from anyone who might have more information, and perhaps pictures from untouched 1946 survivors.​​

  • #2
    Sven, your post does not have pictures, at least none that I can see.
    How did you determine the month of production for your bike, it seems very late.
    Which edition of Palmer's book are you using?
    Robbie Knight Amca #2736

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    • #3
      I don't see any of the pictures Sven posted either.

      *M.A.D.*

      Comment


      • #4
        Dear Robbie and JoJo,

        Seems to be more than one way to post pictures. I used the image icon in the top row, but also I cannot see any pictures when on my phone (on my PC they show up). So let me repeat the original post by using the bottom row "Upload Attachments" (next post)

        Sven

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        • #5
          Repeated post with pictures inserted in a different way, hoping that you can see them this time!

          Part 1: Presentation of the bike and its history (with less than 5 pictures)

          After years of inactivity, I have started the resurrection process of my 1946 Big Twin Flathead. Most of the job will be done by AntiqueBike in Sweden.

          I purchased the bike in 1970 and rode it regularly for five years. Started with a Steib sidecar. 46 with Steib.jpg
          Had it during my internship in the Netherlands in 1970 and later during my vacation in Morocco in 1972. Morocco.jpg
          On my way back, in Madrid, I exchanged my Steib for a modified Harley sidecar. Harley car.jpg

          Comment


          • #6
            Part 2: Frame questions (with less than 5 pictures)

            Started restoration in 1980 but career, kids and family took all my time. So now I am finally acting to get it back into a shape as similar as possible as it was when leaving the factory in May 1946.

            The post-war transition was, most likely, not straightforward at the factory. Chrome and rubber were scarce and much material from the war was used. I have only found reliable information in the Bruce Palmer book "How to restore your Harley-Davidson". But some information in this is not complete. So my first restoration problem has to do with the frame.

            According to Bruce's book, changes were made to the steering-head early 1946 (from 28 to 30 degrees), and after April 1946 the springer fork was off-set. From the book I can conclude that my 46U2774 was manufactured in May, just before chrome and rubber became available again. Bruce also states that the steering heads of 1946 either had die numbers 9, 11 or none. Some steering heads also had an upside-down ND. Strange thing then that my steering head (likely from Kropp Forge Co) has a die number 10 and a not up-side down ND. Steering head 46.jpg Steering-head tube.jpg
            My frame is obviously a bit special, and this is why I wonder if the front-stay lumps emanate from the factory. So what does this mean that my steering head does have a die number 10 and a vertically aligned ND?

            The lumps could, of course, also come from a frame repair, or a modification needed to attach the Steib sidecar. Front-stay lumps.jpg

            My frame will soon be sandblasted, so I will soon send more detailed pictures of these possible production anomalies. But until then, I would welcome any input from anyone who might have more information, and perhaps pictures from untouched 1946 survivors.​​​​​

            Comment


            • #7
              Howdy chaps,

              Thar’s gotta be a first, a “cucumber” Steib (S 350), replete with fender light and way cool “feather” knock off on the wheel attached to a big flattie. And likely a two stroke Saab parked behind it. I drove a uber rare Erik Karlsen built 750 cc two stroke Saab D Sports racer on the street at the tender of 18 in 1974 year round in NE Ohio, no top, no wipers. Miss it.



              Cheerio,
              Peter
              #6510
              1950 Vincent - A Red Rapide Experience

              Comment


              • #8
                The "lumps" may be a much larger repair to that frame and may indicate the steering head was replaced at some point with part of another frame and the lumps were sleeves to connect the upper frame section. Those lumps are in no way from H-D. How does it look at the rear portion by the seat post area?
                Robbie Knight Amca #2736

                Comment


                • #9
                  Reply to Robbie: How do I know that 46U2774 was manufactured in May 1946?

                  I base this primarily on information in Bruce Palmer's book (2nd edition). My frame has a 30 degree (bullneck frames started in December 1945 or January 1946). It also has an off-set fork (first shipped on April 29). From Palmer "Based on factory invoices for new motorcycles shipped to Harry Molenar ... OHV models with serial numbers below 46xx4740 and BTSV models below 46xx2435 will have in-line as 46EL4739 and 46UL2434 were shipped to Molenaar’s on April 26th. It is hard to say exactly what the serial numbers of the first off-set models is but 46EL5271 was shipped to Molenaar’s on May 8th and 46UL2898 was shipped to Molenaar’s on June 17th. Also, since April 26th was a Friday and April 29th a Monday, the first off-set cannot be much higher than the two listed above that shipped on the 26th".

                  My BTSV has a 30° neck angle and an off-set fork. According to the info above it was produced in the 2nd quarter 1946 but after April 29 (first off-set fork) and before June 17th, so most likely in May 1946.

                  Furthermore, approximately two Knuckleheads were produced for each Flathead in 1946. 3,522 Big Twin flatheads were built in 1946, and engine numbers start at 1000, so my 46U is about 40% through the model year, which also fits with a May production.

                  Comment


                  • #10
                    Reply to Robbie: Here are two pictures from 1984 when my restoration still had not halted. Do they shed any light on your question about valuable the rear portion by the seat post area? Bild1.JPG Bild2.JPG

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