The UH-1D or UH-1B models with an excessive length of the rotor shaft out of the mechanics fly for safety reasons with rotor shafts of 12 mm Ø. The difference between the SKS semi-scale rotor heads on offer is due to the centre hub. This version fits the shaft diameter of 12 mm.
We recommend this rotor head for experenced pilots only.
The performance of this rotor head is complementary with a rotor disc of 1810 mm combined with rotor blades Ord.No. 419.
When using an electronic stabilizing system of the swash plate (FBL system), the rocker lock Ord.No. 702/81 is required.
It is not permissible to use this rotor head on a mechanical system powered by a turbine. The only rotor head with 14 mm blade holders which can be used with turbine power is Ord.No. 1005/62.