The difference between a 3 blade and 4 blade is...













wait for it....














DING!
1 blade more.

All things being equal(which they're not)the 4 blade takes more power to
turn for a given diameter and pitch. Thus, smaller Dia.

I went through the 4 blade thing a while back, couldn't see the case for
it to justify the expense then, or now.
JR

Josh Assing wrote:

The local prop shop says that the Revolution4 (17 pitch) will yeild similar WOT
as my SS 3 blade (19 pitch) and recommended the apollo 4 blade SS in 16 pitch

That seems like a lot to drop -- and seems like it'd make my top end & midrange
suffer.

The mercury prop selector pushes the rev4 17; and I just can't find any other
prop-calculators...

They weren't too thrilled about me "trying the prop" and 'would have to get back
to me'

Thoughts on this mojo-prop-magic ?

-j



--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth