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*Cox Engine of The Month* Submit your pictures! -July 2014- - Page 2 Cox_ba12




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Post  kpriddle Mon Jul 07, 2014 11:10 pm

@1/2A Nut wrote:I have one of these olympics and 2 of the Sportsmans. What prop size do you go with for speed flying and percentage of nitro?  Small Cox Logo 

1/2A Nut,

I'm afraid to say I haven't flown this airframe.  I acquired this one, and I don't want to fly it as it holds special value to me.  Nonetheless, the prop is 6 1/8".  Can't remember the pitch.

KP
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Post  1/2A Nut Tue Jul 08, 2014 12:54 am

Cox made a 6x6 for the Sportsman powered Comanche CL planes.
I sourced a bearinged Olympic for swinging vintage wood 10x3 props on a floater.
5.5 x 7 would yield a theoretical speed of 133 mph at 20k rpm.  Thumbs Up 
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