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  1. 17th March 2011, 11:17 PM #16
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    Yonnee
    Yonnee is offline Trailer Bloke & Mild Mannered Moderator
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    Quote Originally Posted by journeyman Mick View Post
    I've got electric brakes for both axles, but my limiting factor is the axles. Two composite axles on slipper springs = 1830kg.
    Correct!

    Quote Originally Posted by Mick
    I gather that when you have two axles on slipper springs you subtract one third the capacity of one axle from the capacity. What about 3 axles, how does that work?
    The reg's state that with a non load-sharing suspension, each axle must be able to carry 120% of its share of the load. So 2200Kg (total of both axles) divide by 1.2 = 1833.3333. Or... 1833 plus 20% = 2199.6

    Quote Originally Posted by Mick
    I've got the Melbourne trailers indepependant set up, it's either got LM or composite bearings in it. I could, at no extra cost, have a triaxle set up. It would be a bit of a hybrid, but if I fitted a breakaway unit I'd get more than 2000kg capacity. It wouldn't be pretty and tight turns on bitumen would be a pain (but could mostly be avoided). But I would have a trailer that I wouldn't soon grow out of and which would have ample carrying capacity.

    I could even chain one (or more) axle up if running lightly loaded or unloaded.

    Mick
    I'm probably willing to bet that the Caravan will have had Composite. So using the same calculation (3300 / 1.2), you'd have 2750Kg capacity as a tri-axle. But as you said, turning tight corners is eye-opening .
    Too many projects, so little time, even less money!
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  3. 19th March 2011, 12:05 AM #17
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    journeyman Mick
    journeyman Mick is offline GOLD MEMBER
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    Yonnee, thanks for the help. I'm still undecided on whether to go dual axle or triaxle. If I went triaxle, where would I position the Melbourne trailers independant suspension, front or rear of group? Or wouldn't it really make any difference?

    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938
  4. 19th March 2011, 03:39 PM #18
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    journeyman Mick
    journeyman Mick is offline GOLD MEMBER
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    Quote Originally Posted by journeyman Mick View Post
    Yonnee, thanks for the help. I'm still undecided on whether to go dual axle or triaxle. If I went triaxle, where would I position the Melbourne trailers independant suspension, front or rear of group? Or wouldn't it really make any difference?

    Mick
    Or possibly even centre of group? If I did that, then I wouldn't need to remove the current set-up, I'd just attach the new axles either side of the existing. Less work = more play time.
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938
  5. 30th January 2012, 01:16 AM #19
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    journeyman Mick
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    Well, ten months down the track and I've got my car trailer registered. I'll let the pictures tell the story. Tare weight 680kg, springs and axles rated at 2900kg, tyres and rims rated at 4200kg, breakaway system fitted.

    Haven't looked at my running tally sheet for a while now, but I think it's cost me about $1200 all up. I did score a couple of near new light truck tyres for $30 the pair and the LEd lights for $30 on ebay off someone local amongst numerous other bargains. Plus the local workshop who sponsors me by doing all my (numerous) tyre changes on my play cars mounted and balanced all the tyres for the trailer too.

    If I add my time for the build onto the job at my usual charge out rate then I probably would have been better off buying a trailer but it's been a pretty quiet year, workwise and I've been pretty underwhelmed by most commercially built trailers I've seen/owned. Poor paint and paint prep really lets them down in the tropics and they turn into rust piles in no time at all.

    About six weeks to go till the first bitumen event of the year so the cheap suby I bought is off to the sponsor's workshop tommorrow to hopefully get the confused ECU (computer) sorted out. The next dirt event is probably not till April (end of wet season, fingers crossed) so that gives me plenty of time to get the suspension lifted (front struts came out this weekend) and the weber that I scored cleaned up and fitted. Happy Days!

    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938
  6. 30th January 2012, 10:54 PM #20
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    Bushmiller
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    That's a neat looking trailer and economically built too. Excellent job.

    Regards
    Paul
    Bushmiller;

    "Power tends to corrupt. Absolute power corrupts, absolutely!"
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