this is a good example of how any folding prop must be designed so it performs as needed: http://www.hobbyking.com/hobbyking/store/__5268__Fol ding_Propeller_w_Alloy_hub_6x4.html in it you can see that the hub protrudes and the blades have an "L" bend so they fold and don't get blocked by the fuselage. why the designers of these small props did not do the same?
poorly designed. they can only bend at 45 degrees. the blades don't clear the fuselage, as the hinge is under the cone and the blades aren't 'L' shaped near the pivot. otherwise they could do ok. same with all the others of similar design.
Auf den ersten Blick nicht schlecht, es wurden wirklich 2 Stk geliefert. Die Luftschraube selbst lÃ¤uft sehr ruhig, nur die Spinnerkappe ist eher oval, wenn die Kappe montiert ist. Bei den geringen Drehzahlen halten sich aber die Vibrationen in Grenzen, deshalb 4 Sterne!
Nice Little Motor that will power my Nuri XXS. With a tiny screwdriver and a (light) hammer its easy to convert it to a pusher! If you want to do so also, have a look at the pins which hold the blades: one hoel is a bit thinner than the opposite. This one is the side where you have to push out the pin for conversion. Spinner runs not too precise - I expect some vibrations Thats why only 4 stars.
As expected these are cheap copies of the small Graupner folding props, I'm not complaining though because of the huge price difference ;-)
My only issue is that the spinners are made of a very thin plastic: out of the six units I received, two spinners were bent out of shape in such a way they are unusable.
@HobbyKing: use a slightly bit thicker plastic on those spinners and you have a winning product for your 5-8-10 grams brushless motors!