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Click on these links for a "hot lap" of the TZ350 and 250 Website:                                     

From Paul Allender in the UK:

Gear Ratios for the Rennstar Scitsu using 18" wheels.

Please note: The bike uses a stock TZ250/350 gearbox so all of this information is relevant to TZ250s and 350s.

                                   
Max Engine RPM Tyre Diameter(m)                     37T Sprocket          
12000   0.667             Gearbox Primary ratio           1st 2nd 3rd 4th 5th 6th
    Tyre Circumference(m)           Driver Driven Ratio     7500 42 57 72 84 93 99
Gearbox Rear Wheel 2.10     Gearbox Rear Wheel     25 74 0.34     7750 43 59 74 87 96 102
15 32   Dunlop 0 15 33               8000 45 61 77 89 99 105
      Avon 1 Calculated Speeds in each Gear   Gearbox Secondary Ratio       8250 46 63 79 92 102 109
Ratio KPH MPH Bridgestone 0   KPH MPH   Gear Driver Driven Ratio   8500 47 64 81 95 106 112
1st 124 77     1st 120 75   1st 15 29 0.52   8750 49 66 84 98 109 115
2nd 168 105     2nd 163 102   2nd 19 27 0.70   9000 50 68 86 101 112 119
3rd 212 133     3rd 206 129   3rd 24 27 0.89   9250 52 70 89 103 115 122
4th 248 155     4th 241 151   4th 26 25 1.04   9500 53 72 91 106 118 125
5th 275 172     5th 266 167   5th 23 20 1.15   9750 54 74 93 109 121 128
6th 293 183     6th 284 178   6th 27 22 1.23   10000 56 76 96 112 124 132
Gearbox Rear Wheel       Gearbox Rear Wheel               10250 57 78 98 114 127 135
15 34       15 35     Tyre Make        Dia.       10500 59 80 101 117 130 138
Calculated Speeds in each Gear     Calculated Speeds in each Gear   Dunlop 18 0.624     10750 60 82 103 120 133 142
  KPH MPH       KPH MPH   Avon 18 0.667     11000 61 83 105 123 137 145
1st 116 73