Spinner for R/C model folding prop (e.g. MPX Merlin)

Spinner Cap for R/C model with 2 blade folding propeller.
The model is done completely parametric in OPENSCAD with a procedural generated hyperbolic shape.

With the uploaded dimensions it fits to a MPX Merlin (with DIY Alu central prop hub). With slight modifications (increased dimensions and different connection to Alu hub) I use the same design for MPX Easyglider and even my Cularis.

Hyperbolic shape can be modified by exponent from 1.0 (linear cone shape) to 2.0 (ball shape), I experi