In a message of 10 Dec 95  12:53:10, Roger Marshall wrote:
RM>  You have probably received a post-reply from Kevin Kline about why
RM>  several different size props can be used on an engine - Kevin really
RM> knows
RM>  what he's talking about so his advice is very good.  As to using a 10x6
RM>  vs. a 10x8 prop on a GS-40...the ST line of engines are ALL very good,
    High RPM isn't always the best way to get the maximum from an engine.  
When you run at the highest RPM possible you are wasting the majority of the 
power just thrashing the air.
    This is fine for pylon racing but not for any other type of flying.  With 
a prop of this type the plane won't accelerate or climb as well as it could 
so it won't be well suited for stunt flying.  It also shortens engine life by 
quite a bit.  Pylon racers don't care about engine life because they go 
through several a season.
          MC
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