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  • Rpm @ mph

    Changing the gear ratio on my build looking for info RPM at 60 to 70 MPH want to get it close to stock bike,my build does not have the middle drive gear .

    Thanks

  • #2
    No mention in your profile what bike you have.

    A stock 1700’s 32/70 belt drive w/ transfer case is around 2.40:1 overall ratio..

    A 16t/40t setup will give you around 2.5:1 which would be geared a little lower than stock (slightly higher revs) @ any given speed.

    Running a chain? If so, what’s your current front and rear sprocket tooth count?

    The 1600 bike came with a 33T front pulley which put RPM’s around 2,250 @ 60 MPH.

    Comment


    • #3
      Sorry about that,the bike in question is my New Bike Build under the Bike build thread,i have a 17/45 with chain now,with the trans ratio .750 in 5th 17/45 puts me at a 2.64 final ratio which I feel is to low to run somewhere around 2300-2400 rpm at approx. 65-70 mph.Now I haven't ridden the bike yet so I don't really know just calculating.

      Comment


      • #4
        You should be in the ballpark with what you have now.

        Comment


        • #5
          Thanks Bikerron

          Comment

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