prop shape ?

[mpsyamaha]

i have a 2006 2stk 70 yamaha with its OEM aluminum 13 1/4" x 17 prop. I also have another prop for the boat that i have not tried yet, its a Solas stainless steel prop, also a 13 1/4" x 17. Solas prop is the same size but has a different shape to the blades. They are more rounded overall (how most props look) than the factory yamaha aluminum prop which has a straight trailing edge with only the very tip rounded. Its almost more similar to a cleaver prop blade shape but without the sharp tip. This shape difference between the two props must make them perform differently right? what should i expect switching to the SS Solar prop?

Also the SS Solas prop is much heavier than the OEM aluminum one, does this affect performance at all?

 

[Bondo]

Re: prop shape ?

Ayuh,....

You'll probably get more bow lift with the round ear prop,...

The Weight means little or Nothing....

 

[mpsyamaha]

Re: prop shape ?

Ayuh,....

You'll probably get more bow lift with the round ear prop,...

The Weight means little or Nothing....

Good to know. Im looking for more speed (who isnt?). I would like to get more rpms out of the motor since the most I can get is 5600 now, shooting for 6000. Im hoping the SS prop will help me get closer. The boat is a 16ft semi-v that weighs just over 700lbs dry and it lifts the bow in a hurry already, particularly if i trim it up as high as possible. The boat has a VERY shallow v at the transom and the motor is mounted so that the anti-ventilation plate is pretty much dead even with the bottom of the v.