Speedometer movement / calibration

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  • JayCab
    S2Forum Enthusiast
    • Mar 2025
    • 191
    • Country: United Kingdom

    #1

    Speedometer movement / calibration

    Hello Forum,

    Couple of questions on speedometers:

    1. My I ask others' experiences with the 0 - 20 MPH region of their speedos? Mine has a fair bit of no-movement while the vehicle in motion up to running pace, then reads believable at about 10 - 15 MPH. Behaves like any normal under-calibrated speedo above 20MPH.
    --> Anyone precision oiled or lubricated specific components to get this smoother from 0-20/fixed the dead zone?

    2. Calibration
    Has anyone successfully calibrated their speedo to read real speed and not slightly under ?
    Does anyone know a (reputable, skilled) engineer who can do this, and do it accurately?

    3. Rev gauge / Tach
    Does anyone know if this is absolutely accurate or also calibrated different to reality?


    Kind Regards,

    Jay
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