what's the max rpm for your present engine according to the manual? usually
going from a 3 to 4 blade the diameter is 1/4" less when keeping the same
pitch. But it's a gamble.


wrote in message
oups.com...
Hi there,

My mercury 2 stroke 3 cyl. 80 HP needs a new prop, it has a current SS
prop 3 blades 13,5" 19p. He's doing 5000 RPM at about 38-39 miles on my
fletcher arrowstreak GTO 161.

So I was searching on mercury marine on their "prop calculator". My
goal here is to have good allround performance. I found this prop:
Trophy plus 13,75" 19P 48-825932A46, I like the idea of having 4 blades
and therefore better acceleration and less fuel consumption.

This prop seems to get good scores on all available choices (acc., top
speed, handling, overall performance, mid handling) but I',m a little
bit scared, my RPM will drop too much...

Would this be a good choice for me?
Perhaps anyone knows a better choice for me?

thanks,
Foppe