The difference between a two (2) to three (3)  and four (4) blades propeller is relatevily small. The triple / quadra blades propeller will provide more thrust but at the same time they will ΄΄ sacrifice΄΄ some of the speed that a two blades prop will provide.

       The greater advantage that a multiple blades propeller posses, is the higher ground clearence when the model is on the ground, along with lower level of aerodynamic produced noise at high engine revs. During the transition from a two (2) blades to a three (3) blades  propeller a 2΄΄shorter diameter is advised.

2 BLADES	3 BLADES	4 BLADES
10-6	9-6
11-8	10-8	10-6
12-8	11-8	11-6
12-10	11-10	11-8
13-10	12-10	12-8
14-10	13-10	13-8
14-8	13-8	13-6
15-8	14-8	14-6
15-10	14-10	14-8
16-10	15-10	15-8
18-10	16-10	16-8
20-10	18-10	18-8
22-10	20-10	20-8