2010 GTX 155 n/a

[amigo32]

What should be normal high RPM , I did replaced oem Prop and wear ring for a solas 11/19 now the holeshot is great
no cavitation whatsoever top speed is 54mph Max RPM is 7000 , I believe before RPM was at 8000 if i am correct
would a solas prop make you loose rpm ?

 

[skiasylum]

If you increase pitch you increase the load on the pump and generate more water flow, this results in a decrease in RPM's.
If you decrease pitch you reduce load thus allowing the motor to rev and increase RPM's

Also if there is more blade area with the same pitch you will decrease RPM

If the prop pitch is too high (higher in inches) the motor may run below the WOT range—called “lugging the engine”—which can also put undue stress on engine and gearcase components.

 

[amigo32]

Thanks Skiasylum
could not be explained any clearer than this