Gif of LNWR Emblem
London & North Western Railway Society
Glossary for the LNWR Society

Glossary Results for Word "Rack and Pinion"

Rack and Pinion Rack and pinion drive converts rotary motion into linear motion (or vice versa) by a toothed wheel engaging a matching rack. Some very early locomotives used this system before it was realised that, except on very steep gradients, the weight of the locomotive provided adequate adhesion. But the system is necessary on some mountain railways.