Automatic/Centrifugal Clutch

By Colin Croft, New Zealand

clutch1.gif The Automatic clutch appeared in Meccano Magazine in November 1931.

Its operation is very simple. As the clutch gathers speed the centrifugal force causes the Collars 59 to fly outward and so make contact with the rim of the Wheel Flange 137, ensuring drive to the model. If the motor detects resistance, the Spring Cord attatched to the Collars will take over and disengage the drive.

This mechanism is particularly useful for driving heavy models, where a slow start is more desireable, and so giving realism to the model.

clutch2.gif The Centrifugal Clutch (perhaps a better description) works in exactly the same manner. It takes advantage of some of the relatively new parts, in particular the Aero Tyres 1421, which are available in the new Collection Series. These are placed over Short Couplings and together with a Boiler End make an improved and almost silent drive.

Previous page