[dingocooke]

Hi Dale,

All the previous answers are correct, because it depends on which ones youre using.
If you are using Halibrand style spinners, because of the inertia of such a large spinner, they should be lockwired in at least one point.

If you are using the Hawk type 289 spinner on wires (same thread as an MGB) it is a small spinner, with very fine thread, so doesnt need anything more than an occasional stout blow with the hide mallet to check its all ok.

So, big halibrand spinners-lock wire, small Hawk/MG type 289 spinners not needed.

Steve