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TECHNICAL SPECIFICATION
The NMT gearbox is a transaxle unit, designed for mid-engined, rear wheel drive cars. The unit is produced with six
forward gears, reverse, and a powerflow differential.
The gear selection mechanism is sequential, with a separate, mechanically interlocked reverse engagement mechanism.
The drive is taken from the engine via the clutch shaft, which turns input and pinion gears to drive the final transmission
assembly.
Gear changing is effected through non-synchronising face dogs. An extensive range of gear ratios provides a wide
range of gearing requirements. The gear ratios and differential assembly can easily be changed without removing the
gearbox from the vehicle.
Heat treated nickel chrome steel is used to manufacture all gears and shafts. The selector forks are also steel.
Lubrication is by splash or optional internal pump with distribution circuit, and the oil is retained by lipped oil seals.
In general configuration, the NMT-200 is a high tech racing transaxle unit which achieves the maximum effective use of
power, in conjunction with extremely stiff integral rear suspension mountings.
weight (AL) 128 lbs (58 Kg) 1st to 6th gear ratios from 3.31:1 to .89:1
oil type SAE 80 or 90 final drive ratio 11/31, 10/31, 9/31
oil quantity 7 pints (4 litres) clutch shaft made to customer's requirements
max. torque 320 lbs.ft (430 Nm) Pinion shaft nut tightening torque = 120 lbs.ft (163 Nm)
Crownwheel bolts = 75 lbs.ft (100 Nm)
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