The one I replaced was a two bladed 16"x11" and fitted a three bladed 15"x11". No difference in engine speed no black smoke etc.
These were calculate by prop supplier.
Yes taken it up but they say it's good their calculations, I cannot blame them as this seems a bit of dark ark.
I have noticed that the cord length is larger on the 2 blader compared to the new 3 blade.
I will contact mike Lucas for a chat see what he says.
Thanks guys any more thoughts please keep them coming
bob
Can you get maximimum revs? You say that the revs have not changed but it could be that you can get more speed by flattening the pitch to allow the engine to get up to full revs, or just below.Yes taken it up but they say it's good their calculations, I cannot blame them as this seems a bit of dark ark.
I have noticed that the cord length is larger on the 2 blader compared to the new 3 blade.
I will contact mike Lucas for a chat see what he says.
Thanks guys any more thoughts please keep them coming
bob
At Shamrock Quay, Talk to Paul.
These guys are terrific, knowledgeable, good engineers and understand hull dynamics.
As ever no connection, just work next door and they work on our / my boats.
Satisfied customer.
Simes