[trykemike]

here is a list of values that may be usefgul :

gear rpm mph kph

4 4500 35 55
5000 40 65
5500 43 70
6000 47 75
6500 51 83
7000 55 90
7500 59 97
8000 63 101

5 5000 49 80
5500 54 85
6000 58 95
6500 63 101
7000 68 115
7500 73 120
8000 78 125