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Thread: Triathlon trailer

  1. 4th October 2012, 07:30 AM #21
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    That's an interesting point Graham! I'm not sure of the qualifies for those signs, but I'll have a look when I get to work today. It will be interesting with the tail of it when turning too, the legal maximum overhang is 3.7 m from the rear axle, this is 3.5 m to the axle sets centreline, Not that this diminishes its ability to wipe out a car in the next line.
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  2. 4th October 2012, 07:41 AM #22
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    Quote Originally Posted by Graeme View Post
    .................Turning left from a dual lane road is going to cause the tail to swing out just a little.
    In cases like this it can be helpful to use indicators / hazards as appropriate and occupy the two lanes ....
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  3. 4th October 2012, 08:18 AM #23
    Graeme
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    Quote Originally Posted by 87County View Post
    In cases like this it can be helpful to use indicators / hazards as appropriate and occupy the two lanes ....
    Only if its legal to do so. Fitting a do not overtake... sign does not make it legal to occupy 2 lanes or to turn from the outside lane as minimum length requirements must be met.
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  4. 4th October 2012, 10:44 AM #24
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    7Mtrs is the required length, so I'd say Simons car trailer combination qualifies

    Baz.
    Cheers Baz.

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  5. 4th October 2012, 11:42 AM #25
    Graeme
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    Just squeezes in Baz? Actually that seems rather short.

    Edit: 7.5 metres but still quite a lot shorter than what I remembered.
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  6. 4th October 2012, 02:14 PM #26
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    Quote Originally Posted by Graeme View Post
    Just squeezes in Baz? Actually that seems rather short.

    Edit: 7.5 metres but still quite a lot shorter than what I remembered.
    I thought I remember it as 21 feet, so just rounded it to 7mtrs, memory is fading I think
    Cheers Baz.

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  7. 4th October 2012, 03:21 PM #27
    Graeme
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    My memory is perfect - the number 25 rings a bell.
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  8. 4th October 2012, 03:52 PM #28
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    The box is 27 foot long and the trailer is about 32 1/2 foot long. It should be long enough.
    Cheers
    Slunnie


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  9. 4th October 2012, 07:13 PM #29
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    "This is way too heavy to flip"
    Thats why when I built the shed in Cooktown it has a dirty great beam running across the rafters 3.5m up in the sky
    450kg of Volvo TD deflected the beam about 10mm- Your 'lil box trailer could get flipped like a pancake and the beam wouldnt even cough !!!!!

    Simon - please tell me you will have further verticle trussing / ladder for the main chassis rails
    With 2T load on such long members surely poxy 150 SHS is gonna banana before you even move it
    Stiffness in the X direction (flange) vs weight is where PFC rules and is why it is used on equipment trailers and truck chassis (Rust control is the other huge positive)
    As you say RHS is good for variable loadings but your floor joist system should cover the horizontal loadings pretty comprehensively
    I fear you will need a whole swag more vertical stiffness

    I would have a guess that a centrally supported 8 metre 150RHS4 used as a bearer would never be engineered for a live load of 2 tonne at 2 metre spacings (irrespective of the joists) - trundling down the road is a whole world more "live" than foot traffic

    Are your guns big enough??

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  10. 4th October 2012, 07:39 PM #30
    slug_burner
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    I might be a bit optimistic but I think that the 150x50x4 will be fine. The load is going to be distributed. Take a vehicle trailer, they are likely to be on 100x50 and probably 3mm material. The 150x50 is more than twice as stiff than the 100X50. Sure it is a longer cantilever but it is not carrying a car but triathlon equipment.
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