Spring/Shock angles

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  • imca37
    Junior Member
    • Dec 2013
    • 13

    #1

    Spring/Shock angles

    I'm rebuilding my rearend from a 3 link to a 4 bar. Would like to know what the spring angles need to be. In at the top angle and forward or rearward angle. Any suggestions welcome. Thanks.
  • Racer96m
    Senior Member
    • Feb 2008
    • 425

    #2
    I would keep them as straight (Up and Down) as you can get and keep the angle to 10Deg in. All the angles just complicate the rates. Any angle less than 90 deg to the ground just decreases the advertised rate. My chassis has movable clamp on mounts at the top so you can play with standing the spring up or laying it down, depending on what you are trying to do.

    Dave
    2012 UMP Stock Car National Champions.
    2013 UMP Modified Rookie of the Year
    2014 Kankakee Speedway UMP Modified Champion
    2016 Fairbury American Legion Speedway UMP Modified Champion
    2016 Kankakee Speedway UMP Modified Champion
    2016 UMP Modified, Northen IL Regional Champion
    2018 UMP Modified, #2 National Points Standings
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    • Lizardracing
      Senior Member
      • Sep 2009
      • 839

      #3
      I would lay the spring in a line with the center of the contact patch, the lower spring mount. Maintain that line and place the upper spring mount where ever it needs to go.

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      • imca37
        Junior Member
        • Dec 2013
        • 13

        #4
        Thanks guys

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        • save the racers
          Senior Member
          • May 2013
          • 271

          #5
          Make sure the upper mount are close to the same distances from the center line of the wheel track width.The top mounts close to the same distance from the tires might be a different way to say the samething.

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