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Automotive Calculating gear speed in rpm?

  1. Mar 9, 2017 #1
    Hi guys,

    How would I go about calculating gear speed in rpm? If I know the input shaft speed, output shaft speed, gear ratios and tyre size.

  2. jcsd
  3. Mar 9, 2017 #2
    What do you mean by 'gear speed' in rpm?
  4. Mar 9, 2017 #3
    How fast the gear is spinning.
  5. Mar 9, 2017 #4
    Well they'd be spinning at the same speed as the shafts.
  6. Mar 9, 2017 #5
    Sorry I meant engine speed haha, don't know why I said gear speed.
  7. Mar 10, 2017 #6
    By input shaft, I assume you mean transmission input shaft.

    What is driving / controlling the speed of this shaft?
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