Overtorqued wheelnuts

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Comments

  • PITCHTOCLOSE
    PITCHTOCLOSE Forum Participant Posts: 658
    500 Comments
    edited January 2016 #32

    it makes you wonder why do not have a spigot on the hub the same as a car, the weight is on the spigot,on a caravan it is on the studs crap idea, how many car wheels fly off.

  • ocsid
    ocsid Forum Participant Posts: 1,395
    1000 Comments
    edited January 2016 #33

    it makes you wonder why do not have a spigot on the hub the same as a car, the weight is on the spigot,on a caravan it is on the studs crap idea, how many car wheels fly off.

    By the time the caravans weight is taken by any spigot the wheel is just seconds from coming off completely.

    Spigots on car wheels, where used, don't play any part at all in load carrying, to do that the bolts have come loose as the friction they develop alone holds the wheel on and carries the loads.

    Spigots are a wheel mounting , u- mounting aid only.

     

  • rogher
    rogher Forum Participant Posts: 609
    500 Comments
    edited January 2016 #34

    What is the purpose of doing them up tight? Mine has split washers that would seem to be there to stop the nuts from coming undone.

    Is it necessary to do the near-side tighter than the off-side?

    Unless we are talking at cross purposes, wheel securing bolts used on caravans absolutely must not be used with spit washers.

    They require seating directly onto either on conical or spherical seats in the wheel.

     

    Yes, I had forgotten that the discussion was about caravans, and it's a long time since I removed a caravan wheel.

  • Chris Ardis
    Chris Ardis Forum Participant Posts: 55
    edited January 2016 #35

    It looks like Rougher is describing the wheel stud and spring washer system used by Mercedes on their commercial vehicles. This is a totaly differant system than the studs used by other truck/van and caravan manufactures.

  • Landlubber
    Landlubber Forum Participant Posts: 65
    edited February 2016 #36

    Wheel nut torqing has and still is a big problem in the transport industry. I was a MIRTE for 40 years and did much work on the problem. If you run a TA be extra careful and yes toque them up to recomended but do not relax your checking - They are subject
    to a great deal more stress on the studs because of stretch and flex when cornering.

    Stay safe

    John

  • Landlubber
    Landlubber Forum Participant Posts: 65
    edited February 2016 #37

    it makes you wonder why do not have a spigot on the hub the same as a car, the weight is on the spigot,on a caravan it is on the studs crap idea, how many car wheels fly off.

    By the time the caravans weight is taken by any spigot the wheel is just seconds from coming off completely.

    Spigots on car wheels, where used, don't play any part at all in load carrying, to do that the bolts have come loose as the friction they develop alone holds the wheel on and carries the loads.

    Spigots are a wheel mounting , u- mounting aid only.

     

    Write your comments here...This is not strictly true - spigots are used exclusively on truck wheels and have drasticly reduced wheel loss - the spigot grips the wheel when warm and aids security - on trucks the spigot alone holds the wheel and the nuts simply
    clamp them the the axle - nuts are flat with a special anti friction element built in called spigotted nuts - the cone is on the axle side.

    John 

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