Specifications

GEARBOX & FINAL DRIVE
DATA
The Homologated ratios for the heavy duty
gearbox are as follows. It is important to
remember that these are internal and not the
overall ratios.
RATIO

NUMBER OF TEETH
1st . . . . 2.54:1

33:13
2nd .... 1.76:1

30:17
3rd .... 1.42:1

27:19
4th .... 1.19:1

25:21
5th .... 1.04:1

24:23
Rev .... 3.31:1

29:13
x
43:29
Several optional final drive ratios have been
homologated but the crown-wheel and pinion
sets that equate to the ratios are not necessarily
readily available.
The following ratios are currently being used
successfully:
Gravel. 4.64:1
Tarmac. 4.36:1
PERFORMANCE DATA: Fifth gear
Cq•
7500 RPM
Final Drive
Ratio

Racing Tyres

Gravel Tyres
18/56-14 14/60-14
KPH/MPH KPH/MPH
4.64:1

161.10/100.05
4.36:1 171.433/106.48
SPEEDS IN GEARS AT 7500 rpm
4.36:1 Final Drive
18/56 - 14 Michelin Racing Tyres