Propellers : `Adjustable` FP propeller

Kamewa has introduced an adjustable bolted propeller. This is said to have the advantage of a FP propeller but has the blades bolted to the hub rather than being a single casting.

Such an arrangement allows spare blades to be carried against the eventuality of propeller damage and allows some minor degree of pitch adjustment. Such alterations and blade replacements can be carried out without the need for drydocking.

The hub is hollow meaning the bolts can be tightened from the inside using light hand tools. While pitch adjustment is not likely to happen regularly, there is scope to move the blades by about +/-2 deg.