Featured 1950 5t Rebuild

Discussion in 'Builds & Projects' started by darkman, Sep 1, 2022.

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  1. darkman

    darkman Crème de la Crème

    Oct 26, 2015
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    Su's next project a 1950 5T speed twin, i have spent the last two weeks flatting and polishing all the painted parts as they had accumulated many years of dust and over spray etc ingrained into the paint, a few part that are not good enough i will respray. Next job is to strip and inspect all the engine and gearbox parts ready for its rebuild.

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  2. Dawsy

    Dawsy Cumbrian half-wit
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    Aug 24, 2018
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    Already drooling in anticipation :kissing_heart:
     
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  3. Wessa

    Wessa Cruising

    Apr 27, 2016
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    Agreed, looking forward to seeing progress ;)
     
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  4. speedrattle

    speedrattle Senior Member

    Feb 19, 2021
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    do you just have a shed full of these projects that youve accumulated over the years, or are blessed with a benevolent and eccentric uncle?
     
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  5. darkman

    darkman Crème de la Crème

    Oct 26, 2015
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    Sadly none of the above, just good old fashion work, i will be posting some pics of a paint job in the coming weeks that will pay for the engine rebuild :)
     
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  6. timboo

    timboo Well-Known Member
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    Oct 17, 2021
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    Just google south coast national motorcycle museum and your house comes up
     
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  7. darkman

    darkman Crème de la Crème

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    Another great idea for cash, we could open for the summer months with guided tours and Su will do tea and biscuits :)
     
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  8. Tiglet

    Tiglet Vintage Member

    Mar 28, 2016
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    One or two of these sprung hub 5T's are beginning to surface in the VMCC Cheshire Cats Section. The lovely softish motor will run all day.
    Keep the pictures coming,I'm drooling already:)
     
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  9. darkman

    darkman Crème de la Crème

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    Well i expected the white metal big ends to have play but had another expected surprise, when stripping the engine i had removed some Hylomar from around the drive side main bearing outer crankcase area and found a crack in the case and sure enough on stripping the engine found more bodged centre punch marks made in an attempt to hold the bearing in place :-( Good old 90's engineering for you lol.

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  10. Iron

    Iron Elite Member

    Dec 29, 2021
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    Well, that's a bit of an arse......
     
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  11. darkman

    darkman Crème de la Crème

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    Its just got even worse :joy:
     
  12. darkman

    darkman Crème de la Crème

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    When you think ah its just the white metal that failed and maybe the old bodger with shares in Hylomar wasn't so bad i find this pathetic effort : unamused:

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  13. Iron

    Iron Elite Member

    Dec 29, 2021
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    Bummer, new rods as well.....
     
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  14. timboo

    timboo Well-Known Member
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    Oct 17, 2021
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    I will take your word for it don’t have a clue what I am looking at.
    Great story as always though love seeing the progress.
     
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  15. speedrattle

    speedrattle Senior Member

    Feb 19, 2021
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    jeez.

    what about the crank journals?
     
  16. darkman

    darkman Crème de la Crème

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    I have just remeasured the journals as they look fine and they are within specs for -20 thou unit 500 shells, so some LFH 500 rods but with 6.5" centres will work :)
     
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  17. darkman

    darkman Crème de la Crème

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    Best bit is they had ground the rod bolts with a flat (see pic) to clear the shells lol.
     
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  18. Mark9

    Mark9 Noble Member

    Jul 13, 2020
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    Ha, there’s definitely been some “out of the box” thinking on those bodges, or should that be “out of their mind!”, lucky that parts for these engines are available and relatively cheap, I noticed it’s still rigid frame at 1950,( I have a 1947 T100), when did they go to rear suspension?
     
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  19. darkman

    darkman Crème de la Crème

    Oct 26, 2015
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    54 for swingarm i believe Mark and Triumph still produced some ridged bikes as well after that date but i'm no pre unit expert as i tend to stick with 63-70 unit construction bikes.
     
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  20. Mark9

    Mark9 Noble Member

    Jul 13, 2020
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    It’s little wonder that the British bike industry went down the pan with their glacial development program, I was looking at a 1938 T100 at the National motorcycle museum a few weeks ago, besides the front forks and a few other changes here and there my 1947 is the same bike!, going well into the 50’s with rigid frames is another example of the lack of investment and development, if you look at a 1992 Honda Fireblade and then a 2002 model for example they are totally different bikes!.
     
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