4x4 Recovery points

• Personal notes and observations 2014.
• Bolts
  • M16 x 8.8 - 125kN ??
  • M12 x 8.8 - 67kN ??
• Using tow-bar (not tow ball) for recovery ?

  • http://www.4x4community.co.za/forum/showpost.php?p=710739&postcount=40

  • Tow ball snapped http://www.4x4community.co.za/forum/showpost.php?p=874727&postcount=9

• Tow (Pintal) hitch with pin and ball, put pin through loop of rope.

  • - Not rated.
    - If bolt's connecting it to the towbar fail, you have a big piece of metal flying at high speed.
    + Can be made save if used with lanyard connected to rope and differnet point on vehicle.
    + big bolt with a large surface area on rope eye.
    + Quick to assemble, and get to if chassis in sand.

• Recovery hook

  • + Rated, attached with two bolts.
    + Open, does not need shackel, just hook rope, less metal to fly.
    - If bolts break, hook fly's off on kinetic rope, but as rope slows it can fly off on it's own.
    install directly on chassis, one on each side, and use bridal (>3m) to spread load over both.

Accident reports

• http://www.abc.net.au/news/2011-08-21/freak-accident/2848762

• http://www.4x4community.co.za/forum/showpost.php?p=478318&postcount=14

• http://www.youtube.com/watch?v=f8trkgFX6wI&feature=youtu.be

• http://www.4x4web.com.au/brettski4x4/CanTeen2007/IMG_6207.jpg

• http://nz4wd.co.nz/articles/rated-%E2%80%98r%E2%80%99-recovery

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Category4x4