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Re: What 3 blade for a OS 52 four stroker?

The recommend props are Prop(s): 10X8,10X9,10.5X8,10.5X9,11X6,11X7,11X7.5,

12X5,12X6,12.5X6

As the normal rule of thumb is decrease by one inch when going to three blades. It would appear you would have too much prop.

> Is a Master Airscrew 11X7 three blade too much for a OS 52 4-stroke? > > Thanks > > Don > > > -- > twinster2 > -------------------------------------------------------------------------- --------- > Posted from the RCGroups.com Discussion Forums. > Visit us at
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Reply to
W4JLE
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Hello Don... I've found out by experment that the rule of going down one inch in length ond up one pitch is just not the way to go.. I use the same in two blade and three blade..11-7 two..11-7 three blade..... But the bottom line is that you just have to experment till you find one that works good for your application.........If you get inbetween sizes and find one isa litte too much for your motor you can shave off a little off the back of the blades to unload the motor a llittle.... works for me.In your case you can always go to a 11-8 or a 12-6.I think either one of these will work fine....Bobby

Reply to
DAYFLIER

I once used a Graupner 12x ? (6 I think) 3 blader on my saito 50 and it was cool!! used to pull the plane (i.e taxi) on an idle of 2100rpm toped out at

Reply to
Nick Beard

I used Graupner 11 x 7 or 7.5 's on Saito 50's to power my Royall B-25. Never tached them but they flew the plane great.

Reply to
David

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