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Old 02-11-2010 | 07:43 AM
  #7  
da Rock
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From: Near Pfafftown NC
Default RE: determining spinner size

ORIGINAL: ece8893

Guys, I have a query to send and would like to hear your feedback. Ihave a World Model P51 Mustang size 46. Engine is OS 55AX 2-stroke.
I installed a Tru-turn spinner 3'' and a 3-blade 13x8 propeller.

Is this alright or am I killing my engine?

Anybody try 11x8 3-blade on P51 size 46 ?

Thanks in advance.

You might check the response to your almost identical question in the "how to choose a propeller" thread.

If you can find any size 3blade you wonder about, buy it and try it. The "rules of thumb" and "convention wisdom" about 3blades is so far off the mark, and so very, very few people have real experience flying 3blades that the only really dependable way to find out about 3blade props is to try everyone that you can find to buy that even looks like it might work for you.

As for spinner size......... you chose a scale model, why use any spinner that doesn't fit?


BTW, the answer in the other thread covers actual testing and experimentation of 3bladers on an OS55AX.