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Father-Son build - 1953 Triumph Speed Twin bobber

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  • Father-Son build - 1953 Triumph Speed Twin bobber

    A few months back, while stranded on the side of the road with a flat tire, I mentioned to my dad that I wanted to get my motorcycle licence and build a bike. I mentioned building a bobber or a cafe, something a bit custom. What I haven't mentioned is that my dad's been riding bikes since way before I was born and has collected a lot of cool stuff, mostly Triumphs. We tossed around the idea of using a 1968 650 and turning it into a rigid frame... but then my dad said, "hey what about the 53? it's already hard tailed"

    This bike sat in the basement of our old house for at least 20 years, and prior to that it was a farm bike. I knew it as "the orange bike"

    So with the moderately interesting background out of the way, here it is. It is a 1953 Triumph Speed Twin, otherwise known as a 5T. It has a 500cc engine, which produces a whopping 27hp. It is among the last of the Triumphs to use an iron head. It also has a sprung rear hub, which incorporates some travel into it to make the ride from the factory rigid frame a little less harsh. As I mentioned earlier it has been sitting, in my dad's possession for over 20 years and an unknown amount of years prior to that. His friend bought it off a guy who used it as a farm bike and when he fell into hard times and wanted to flip it my dad bought it for... well.. not much.

    Before work could start though, the garage had to be cleaned out and after two major renovations at the cottage and moving from a house to a town-house meant that it was seriously neglected aka a disaster. So.. after two days we cleaned it up and pulled out the bike.



    What you can't really tell from photos is that the whole bike was painted with a brush and some orangy-red Tremclad, nuts welded on to the frame, all sorts of ghetto shit. When we rolled it out of the garage, I couldn't believe it - the rear brake still worked great and the tires held air!

    Anyways, got it back inside, found the factory tank, slapped it on and took off the seat to get an idea of what a single saddle might look like...





    Then.. a couple hours later..... a bunch of 60 year old parts came off...





    So end of day one that's what it's looking it.. Next on the docket is to pull the rest of it out and see what sort of shape it's in and go from there..

    But for now here's a pic of my dad's Triumph, one owner since new.


    Dad's bike by christopher.johnston, on Flickr

  • #2
    Wut.... So sick. I'll be following this one.
    IG: ossiep

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    • #3
      Well this is going to be awesome
      -SW|UK-
      Education - Knowledge - Power
      insta: @stinkinrich

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      • #4
        Day 2 provided some new intel. Turns out that the guy my dad bought the bike off of, bought it from a shop who were commissioned to look at a faulty magneto. The owner left it at the shop and never came back - the bike sat in the shop for many years, then my dad's friend bought it, then my dad, then it sat. So a conservative bet is that nobody has touched it for about 40 years.

        Did a bit of work today. I didn't mention yesterday but these old Triumphs use it's own fastener system called Whitworth. http://en.wikipedia.org/wiki/British_Standard_Whitworth

        Working on it is fun because sometimes an imperial wrench would be too big and a metric is just a bit too small - so you need to stretch the wrench a bit by rocking it back and forth for a nice tight fit...

        Luckily we found one Whitworth wrench..... haven't used it on anything. Notice the markings on the wrench. This is the same wrench, with two different measurements stamped on opposite sides....?????



        Removed the carb first.. it uses a slide instead of butterfly - funny how simple it all is. Here you notice the oil hard lines going from oil tube to cylinder head.


        Then the rocker boxes were removed, then cylinder head...
        Here's the head removed looking at the barrel...


        Cylinder head with rocker boxes removed with complimentary mouse nest remnants.


        Notice the plugs look brand new and not too much carbon build up...


        Then the barrel was removed.. looks ok?


        A bit of scoring on the piston..


        ..and a bit of rust from sitting for ?? years


        end of day 2...


        Next up need to remove the gear box. This is considered a pre-unit bike so the gearbox and engine case are separate.. So in order to remove the bottom end I need to remove the gearbox, to do that the clutch needs pulled and not sure if we have a puller.... to be continued.

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        • #5
          I'm jealous. I love Triumphs. I better see updates daily hahaha
          My '66 C10 Build
          My BMW 2002 Build

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          • #6
            This sounds wonderful. I can't wait to follow your build.

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            • #7
              Downloaded the manual (1950s manual scanned to pdf version - super look) and thought I'd share some of the drawings. Work should resume tonight - if we can find the clutch puller..

              Anyone care to guess the friction material used for the clutch???????



              5T by christopher.johnston, on Flickr

              here's a shot of the slide carb that I was referring to....


              here's someone fondling the cylinder barrel


              want to put this on a t-shirt or poster or something.



              VS

              My 1953 Triumph by christopher.johnston, on Flickr

              close enough....

              Any guesses about friction material for the clutch? (without searching)

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              • #8
                asbestos! i actually knew that aha

                love this man, dream of doing a hard tail bobber, but seeing as i dont my bike license i cant justify it yet

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                • #9
                  Good guess! but INCORRECT lol

                  Pre-unit clutches are made from a different material.

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                  • #10
                    Leather? lol.

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                    • #11
                      Poo from a baby seal held together by unicorn tears?
                      Sup. Call me Z.
                      My Accord "build".

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                      • #12
                        omg this is so good! sub'd!

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                        • #13
                          ah man, thought i had that for sure aha

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                          • #14
                            Originally posted by CrackerTeg View Post
                            Poo from a baby seal held together by unicorn tears?
                            really close actually, but the answer is CORK!

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                            • #15
                              Damnit! So close!
                              Sup. Call me Z.
                              My Accord "build".

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