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Propeller pitch question.

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Scott Stewart

Joined: 29 Jul 2008
Posts: 30
Location: Windsor, California

Posted: Tue Jul 30, 2013 4:27 pm Post subject: Propeller pitch question.

Hi Folks,



I'm getting really close to finishing my plans-built CH-640.  I'm to the point I need to buy the propeller, and I want to compare the performance of climb versus cruise pitches.



From Zenair, I was supplied the FWF pick list which shows the Sensenich 76EM8-0-54.  On the Sensenich website, their propeller selection guide shows 76EM8-0-61, 63, or 65 are appropriate for the CH-640.  This is a really wide range of pitches: from 54" to 65".



I don't want to buy an under-pitched propeller since I want to do a lot of long distance cruising.  And, of course, an over-pitched propeller will stress the engine too much.  So what does the group think?  What pitch are you using, and how well does it work for you?



Thanks.

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_________________
Scott Stewart
CH-640 built from plans
Flying since August 2014

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