who makes these ultra-light trailers/wheels and are they highway legal?

Discussion in 'Boat Design' started by Squidly-Diddly, Jul 6, 2020.

  1. brendan gardam
    Joined: Feb 2020
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    Location: east gippsland australia

    brendan gardam Senior Member

    For what it's worth I have a 12 ft aluminum boat with 8 inch tyres on the trailer; the alloy rims have integrated hubs. You remove the wheel and bearings to change the tyre. I was worried about such small wheels but I tow it at 100 kmh and the tyres and bearings are cold every time I check them.
     
  2. A II
    Joined: Jun 2020
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    Location: Belgium ⇄ the Netherlands

    A II Junior Member

    Are these your wheels ? - What's the brand of the trailer ?

    8 inch aluminum alloy rim integrated hub plus tire tyre trailer wheel.jpg
    From the linked ad: - - ( 1080 × 1080 pixles 1524 × 1524 pixels)
    ‘‘ 8 inch Trailer Wheel & Tyre 5 stud HT pattern or Holden bearing mount (bearings incl) Parallel Bearings - Weight 5 kg - Oz $ 165.00 ’’ (US $ £)

    Info on the rim integrated hub: ‘‘Max Load 825 LB’’ - 374 kg
     
    Last edited: Jul 13, 2020
  3. brendan gardam
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    Location: east gippsland australia

    brendan gardam Senior Member

    I will have a look when I go home Friday. It is a local Australian made trailer. The wheels in your pic look the same.
     
  4. A II
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    A II Junior Member

    Re post #47: Below some info put on the there shown tire. - ‘‘6 P.R.’’ - I don't know what that is, maybe someone else ? - Maybe ‘‘6 Ply Rating’’ ?

    8 inch aluminum alloy rim integrated hub tire code info.jpg
     
    Last edited: Jul 13, 2020
  5. A II
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    Location: Belgium ⇄ the Netherlands

    A II Junior Member

    Could it be this one ?

    "Lean Machines: Preliminary Investigation" (PDF) Institute of Transportation Studies, University of California at Berkeley
     
  6. DCockey
    Joined: Oct 2009
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    Location: Midcoast Maine

    DCockey Senior Member

    That looks like a standard 4.80/4.00-8 trailer tire which has been widely used in the US for at least six decades. My impression is 8" wheels and tires have been less common on new trailers in recent years.
     
  7. The Q
    Joined: Feb 2014
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    Location: Norfolk, UK

    The Q Senior Member

    it was later admitted that rolling the Reliant Robin was only acheived by putting smaller wheels on one side and the front, and on a slope. With the standard wheels , the weight of the engine and gearbox is so low down, they could not roll a Robin.
     
  8. A II
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    Location: Belgium ⇄ the Netherlands

    A II Junior Member

    The aluminum alloy rim integrated hub spares a lot of weight and costs, although the latter depends on the manufacturer and the sales chain.
     
  9. The Q
    Joined: Feb 2014
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    Location: Norfolk, UK

    The Q Senior Member

    A great many Dinghy trailers in the UK are still manufactured with 8 inch wheels, they are capable of meeting all UK transport regs and quite safe at legal speeds, (and illegal having seen a few pass me).

    My own small boat Trailer has 8 inch wheels , it has safely done a journey of over 80 miles, with the boat on board, though most journeys are just the 10 miles to the sailing club... The boat weighs 1/2 a ton....

    Oh 6 PR = 6 plys making up the basis for the tyre, the lawn mower version only has 2 or 4 Plys, the heaviest duty 8 inch tyre I've seen was 8 ply.. for a bomb trolley.
    Yes always run those tiny tyres at full pressure or the casing may rotate on the wheel..
     
  10. A II
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    A II Junior Member

    The huge Jeremy Claxon always sitting on the roll side also helped I'll guess.
     
    Last edited: Jul 13, 2020
  11. A II
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    Location: Belgium ⇄ the Netherlands

    A II Junior Member

    Thanks, the 6 ply figure is also represented by the ‘‘C’’ on light truck and trailer tires.

    Wikipedia: Tire Code Load Range Ply Rating

    Load Range Code (represented Ply Rating) - A (2) - B (4) - C (6) - D (8) - E (10) - F (12) - G (14) - H (16) - J (18) - L (20) - M (22) - N (24) -
     
    Last edited: Jul 13, 2020
  12. Rurudyne
    Joined: Mar 2014
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    Location: North Texas

    Rurudyne Senior Member

    As it was classified a bike for drivers licensing purposes why not add training wheels up front as an aftermarket solution?
     
  13. Rurudyne
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    Location: North Texas

    Rurudyne Senior Member

    So another exploding saddle tank trick, but done for laughs and not as "journalism"?
     
  14. upchurchmr
    Joined: Feb 2011
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    Location: Ft. Worth, Tx, USA

    upchurchmr Senior Member

    A ll
    Thanks very much for that document. I have looked for years for any information on the Lean Machine concept.

    The title of the document I have is : Evaluation of electric and Hybrid 3-wheeled vehicles for handling and stability. Volume 11: Technical Report
    By Systems Technology, inc. Hawthorne, Ca, Sep 1981. Paul G. Valkenburgh, Richard H. Klein, Henry T. Szostak.

    Marc
     

  15. A II
    Joined: Jun 2020
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    Location: Belgium ⇄ the Netherlands

    A II Junior Member

    I'm glad you enjoy having it now, I've found the Lean Machine document on the Wikipedia page Three-wheeler, as reference #31.

    I'll later see if the document you named pops up for me, as I'm now kinda studying ‘‘salt water welding machines’’ on the thread Real Ocean News in post #145.
     
    Last edited: Jul 13, 2020
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