[Public-List] Standard Prop Size and Pitch

[MMasstransit at aol.com]

I  can  only  suggest  and  I   have  nothing  but  wonderful  things  to   
say  about  teh  Indigo Electronics 3  bladed   stainless steel  prop---no  
cavitation (or  very   little)  and  very  good  in  reverse!!   DESIGNED  for  
the  A-4.
 
Speaking  of  A-4   does   anyone  have a used  one  for  sale   within   
pick  up  range  of  NYC??  My  range   is  relatively  wide!!
 
Thank  you.
 
 
In a message dated 5/22/2008 11:20:53 A.M. Eastern Daylight Time,  
Bpalmer at DigitalArsenal.com writes:

On  L'Esprit, I've got an Atomic 4 with the 13x7 prop.  The engine  runs
strong and smooth, but when in gear, I can't rev higher than  maybe
1900RPMs.  If I push the throttle higher, the engine doesn't go  any faster.
I think it's just that the engine is working hard enough that  it simply
can't spin the prop any faster under that load.

It's not a  problem, since I can motor along at 6 kts or so on flat water.  I
hear  people mentioning 2300RPMs...  It would be nice to have this as  reserve
power if I was motoring against the wind and chop or  something.  Do those of
you who also have A4s with the standard 13x7 2  blade find the same
limitation?

On a side note, Towney mentioned  before that he had his 13x7 prop turned
down to a 12x7 prop after getting a  nick in it or something.  He said the
engine ran like never  before!  He had the same problem I speak of, with the
RPMs never  getting high enough to take advantage of ideal HP and torque
available at  those higher RPMs.  He said that once the prop was smaller it
felt  like it was a better match for the A4.

-Brian  Palmer
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