It can't be that bad if you are still using it (although you probably
shouldn't). You can get it repaired for a spare, or repaired and
re-pitched for everyday use. Find a good prop shop and talk to them.
There are a variety of factors that affect the performance of a prop.
You can also have them add a "cup" or vent it, for example. Whatever
you do you don't want to exceed your maximum RPMs at WOT and get a new -
or repaired- prop on there right away!
If you are happy with the hole shot for skiing, you might be able to
gain more top end with the right tuning with the prop you have. From
your post it seems that you are unhappy with the top end speed but boat
propellors rarely give you the best of both worlds.
Talk to the experts. It's well worth it.
Dan
gudmundur wrote:
I currently have a 13.75 inch X 15 pitch aluminum prop on my 70 hp
Evinrude. The prop was really beat to death by it's previous owner, and
it is needing replaced. I use this boat for diving and skiing mostly, it
runs about 30 knots at present, and yanks me up out of the water quickly.
I was looking to go stainless, but they all seem to have a much higher
pitch, like 19 or more. What could I expect from say 13.25 X 21? I would
guess it would lug my motor down, and be very poor on pulling a skier up.
|