1. The axle or axles of the leading wheels are normally located on a leading truck. 2. Innovations in steam locomotive design included the introduction of compound engines and bogie rather than axle leading wheels . 3. Two step reductor was used as a power transmission from a traction motor to the leading wheel pair. 4. Originally the 141 Class had leading wheels of diameter, coupled wheels of diameter, and cylinders measuring. 5. Leading wheels are used to help the locomotive negotiate curves and to support the front portion of the boiler.6. The 4-6-2 designation means it has 4 leading wheels , 6 driving wheels, and 2 trailing wheels. 7. The extra weight of the larger boilers was borne by the leading wheels , making the locomotives unstable, particularly at speed. 8. The drive was on the trailing wheels and the slide bars were attached to a motion bracket just behind the leading wheels . 9. Tyre wear was reduced by supplying jets of water, fed from diameter pipes, to the leading wheels while negotiating curves. 10. Tyre wear was reduced by supplying jets of water, fed from diameter pipes, to the leading wheels while rounding curves.
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