Wood props for 1.40 pattern birds?

[Gray E Fowler]

Chris

The wood props do not have the ability have the deep pitches of 12 and 14 
that are standard on the APC props. As a result a larger diameter must be 
used, which can be a problem. The wood grain nature of the prop also does 
not allow for better tip shaping, reducing efficiency and causing alot of 
noise. The answer seem to be the CF props, that appeared a couple of years 
ago, but it seems that there are not so many anymore. 



Gray Fowler
Principal Chemical Engineer
Composites Engineering




"White, Chris" <chris at ssd.fsi.com>
Sent by: discussion-request at nsrca.org
05/27/2004 11:15 AM
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        Subject:        Wood props for 1.40 pattern birds?


 Has anyone tried stock wood propellers on 1.40's and found that they can 
live with the performance compromises from composites?  Just wondering 
because of the desire for light weight aircraft.
 
Thanks,
Chris White
 
 
 

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