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Thread: Unusual trailer axle combination

  1. 06-24-2009 08:28 PM #1
    Oso
    Oso is offline Rookie Oso is an unknown poster at this point. Don't let him/her around power tools just yet.
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    Default Unusual trailer axle combination

    The recent discussion about speccing a flatbed got me thinking about an axle configuration that I don't see too often anymore. Back in the 70's-80's I used to see Canadian trailers with a regular spread tandem and a lift axe towards the middle of the trailer (Maybe about 10+ ft from the tandem.)

    Does anyone know why these fell out of favour? What's the advantage to this set-up?

    Examples:
    http://www.hankstruckpictures.com/pi...8/file0098.jpg
    http://www.hankstruckpictures.com/pi...rabel_v_03.jpg
    http://www.hankstruckpictures.com/pi...ansport_ws.jpg
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  2. 06-24-2009 08:39 PM #2
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    Windwalker
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    I've never pulled one, and never had a chance to take a good close look at them either. But, it seems to me that the rear tandems were fixed, and the bogeys were able to carry a measure of the weight from the rear axles and make the load legal. At the time, I don't believe they recognized a ten-foot spread and allowed 20K for that axle.
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  3. 06-26-2009 03:33 PM #3
    specialkay
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    In Ontario you only need 9 ft to get 22,000 lbs on a axle. A common spec was a 6' spread on the tandem and a lift 9 or 10 feet ahead. They are getting phased out because Ontario is slowly getting rid of lift axles in favour of steer axles.
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  4. 06-28-2009 02:26 PM #4
    bikerboy
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    ontario steerable axles are still lift axles, but only can be lifted when empty and when reversing
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  5. 06-28-2009 05:10 PM #5
    Oso
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    I suppose I could look this up somewhere, but are the steerable axles generally legal in the US?

    Also, why don't people use a steerable axle on a 10' tandem spread? Woulldn't it help with tire scrub?
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