AMC clutch

Not sure about the length of the springs but the most important thing is that all three are virtually identical otherwise the clutch plates will lift at an angle.

They are only about £2 each so if in doubt it is worth replacing them.

Different makes of clutch plate tend to vary in thickness hence it can be difficult to be exact(for any bike)..If there is a reasonable level of friction material visible then again there is no real concern.

There were two slightly difffering lengths of spring. Depending on whether the clutch is a standard pre-1961 (SS) type or later. The later SS clutch springs are shorter and thicker.

The stack size/thickness depends on the plates. Some dealers have sold replacement driver plates that were so thick you could net get the correct number into the basket without the top two jumping out on on full lift.

Attachment shows the whole range of Dominator clutch spring lengths from 1948 up to 1970. The SS springs are marked with *.

It appears that after the Laydown gearbox was superseeded by the post 56 AMC type, the spring part number changed from D2/399 to 040385 and remained as such even after the introduction of the SS clutch.