Ive currently got a pair of Graupner 30mm 3-blades on my Lutzow hull, 1/144. Shes terribly slow at max speed, so, all things being equal, does it make sense to use a pair of graupner 30-35mm (1.5" approx) 2-bladed "racing" props?

Im torn on ways to get as much thrust out of my direct drive 550 motors as I can. Im pretty sure the problem is blade pitch, the props dont LOOK very mean at all.

For comparison my brothers Konig with twin 35mm 3-blade brass props at 45degrees produce an enormous amount of thrust ! It can almost plane up.


I want to keep myself limited to the graupner 4mm threaded zone. Any experience would be appreciated