Speedo driven gear ratios, C-1 - NCRS Discussion Boards

Speedo driven gear ratios, C-1

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  • lonnie johnson

    Speedo driven gear ratios, C-1

    Help keep my aging brain straight please. In my 62 the driven gear is off about 10% and obviously has the wrong number of teeth. Speedo reads slower than the car is actually moving judged by a correct speedometer in the car ahead of me. In order to raise the speed on the speedometer to match that of the car, I need to decrease the number of teeth on the driven nylon gear, correct?

    Thanks for assisting the addled minded!
  • William C.
    NCRS Past President
    • May 31, 1975
    • 6037

    #2
    Re: Speedo driven gear ratios, C-1

    Yes, if off by 10% you need to reduce by about 2 teeth as a ballpark.
    Bill Clupper #618

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    • lonnie johnson

      #3
      Re: Speedo driven gear ratios, C-1Thanks Bill *NM*

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