Shaft for boats ECO classes. And not only.
Shaft is made of rusting wire from Graupner, with diameter of 2.00 +/- 0.01 mm
At one end of the shaft, a duralumin adapter is attached to the propeller, with M4 thread.
Thread length on adapter - 8 mm
The adapter on the shaft is glued with a Loctite 638 sealant. The cases of tearing off the adapters are not noticed.
On such here shafts - the people win at any competitions!
Length of the propeller shaft with adapter -200 +/- 2 mm.