Rear end kicks right over speed humps
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Thread: Rear end kicks right over speed humps

  1. #1
    FRESHMAN ROVER
    Join Date
    February 17th, 2019
    Posts
    61

    Rear end kicks right over speed humps

    Anyone had this? Will be checking alignment, bushes etc. there is no noise so thinking something may be bent rather than a worn bush. Panhard rods perhaps? It does feel much softer on the right rear too in that it seems to sink more and the left front lifts a bit more. It’s only on speed bumps I can feel it - but it’s very noticeable. Reaches for string, measuring tape and bars...

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  3. #2
    JUNIOR ROVER
    Join Date
    October 17th, 2017
    Location
    East England
    Posts
    873

    Re: Rear end kicks right over speed humps

    It will and it's normal on a P38 and any other vehicle using trailing arms, a solid axle and panhard rod. Think about it, the axle is on trailing arms to keep the wheels pointing in the right direction but as the body moves up and down on the suspension, the panhard rod, being a fixed length and attached to the left side of the body and the right end of the axle, will move the body from side to side. It's very noticeable if you drop the suspension down to access height and look at the car from the back. The rear wheels will look as if they are offset to the right in relation to the body. Then put the suspension on high and look again, the wheels will have moved towards the left side of the car (or more correctly, the body will have moved to the right). Normally you wouldn't notice it but when going over a speed hump, the rear wheels will drop downwards quickly and extend the suspension, which pulls the body over to the right enough for you to feel it through the seat of your pants. Take the speed bumps slower and you won't notice it.
    96 4.6HSE
    98 4.0 Police spec
    and a number of others I maintain for the owners.

  4. #3
    FRESHMAN ROVER
    Join Date
    February 17th, 2019
    Posts
    61
    Thanks for the detailed explanation-that’s exactly what I’m feeling and it doesn’t do it at slow speed. The tyres are also wearing correctly so yep must be a p38 feature. Thanks for putting my mind at rest.

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