Sidecar wheel Tracks

Discussion in 'Hacks' started by Beet, Apr 15, 2018.

  1. Beet

    Beet adventurer

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    was at a Rally in Australia on the weekend, got my tape measure and did a walk and some kneeling over measuring. The measurements are centre of drive wheel to centre of chair wheel. Just shows the variety out there at just one gathering. image.png
    #1
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  2. High Octane

    High Octane Long timer

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    We need to get these in real inches!

    :-)
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  3. Tarka

    Tarka Strangely strange. Oddly normal.

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    It mustn't have been a very interesting rally. :D
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  4. Beet

    Beet adventurer

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    It's a great way to start up a conversation and get more info on the owners builds.
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  5. Beet

    Beet adventurer

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    No you need to move with the times - metric is the new inch. LOL
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  6. Bobmws

    Bobmws Curmudgeon At Large

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    LOL. I remember being told & taught that in grade school, I'm 69 now....... :hmmmmm
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  7. High Octane

    High Octane Long timer

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    I’ve tried to get up with the times but I’m afraid I still need a calculator to convert as I just can’t get the intuitive feel for the metric stuff.
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  8. brstar

    brstar Long timer

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    25.4 MM to the inch.
    How hard could it be?
    We went metric in OZ when I started my apprenticeship as a boilermaker in 1972 (Still yet to make my 1st boiler).
    But when farmers and truck drivers came into the workshop they only spoke in feet and inches, likewise my father.
    So my old brain has a pretty good feel for both and its not so hard to mentally convert roughly.
    Beet you know current OZ reg's limit us to 1850mm wide overall don't you?
    For those on the other continent that's about 6 foot and a 3/4 inch give or take.
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  9. Kruzof

    Kruzof embracing entropy

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    If you want to be convinced, build something that needs uniformly spaced fasteners.
    And get a metric tape measure.
    You won't go back to fractions.
    :deal
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  10. High Octane

    High Octane Long timer

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    I machine a lot of metal and thus I think in decimals inches, thousandths, and tenths. But that’s even a different language to most folks.
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  11. Kruzof

    Kruzof embracing entropy

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    A really different system is the traditional one used by boatbuilders and [I think] old-school airplane builders.
    They build strangely shaped objects so they needed a way to avoid cluttering up the plans with many dimensions in feet, inches and fractions of inches.

    So a dimension of 2 feet 6-13/16 inches is entered as 2-6-6+.
    Fractional inches are entered as eighths. The + brings it up a sixteenth.
    It works, I guess.
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  12. Beet

    Beet adventurer

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    Yes
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  13. 3legs

    3legs Real men ride sidecars

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    Average 1277mm.
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  14. Nudie

    Nudie Rusty not rusty

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    I wonder if you spent the time to compare those measurements to each bikes wheelbase, how close would you get to an ideal wheeltrack (expressed as a percentage)?
    Yes I'm aware that all set ups are different, but this might give you a figure to aim for perhaps.
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  15. Beet

    Beet adventurer

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    That would have been a great idea, no I didn't. Next time I'll see how I go. In Australia we (generally, not all obviously) that use our outfits for outback use try to build them with a track that suits the most popular 4x4, namely the older Toyota 4x4. All the best
    #15