Which propeller should i get

[miichael]

I have a 1974 70HP evinrude in has the orginal prop and im wanting to upgrade. its on a 16 foot dixie boat and it will run like 26-28 mph. i dont know much about props i want one good for pulling skiiers and good high speed. how much faster would a good prop make my boat? at 28mph how fast do u think it would change it?

 

[roscoe]

Re: Which propeller should i get

The key info needed in picking a new prop is what do you have for a prop now? and how many rpm is your engine turning at full throttle?<br /><br />To get more speed and more pulling power from a prop will be difficult. Usually you have to give up speed to get more power, and vise versa.

 

[DJ]

Re: Which propeller should i get

miichael,<br /><br />Without knowing your top RPM, you are guessing. That engine needs to run at a minimum of 5500 at WOT. If not, you are lugging it and asking for troubles.

 

[sharkcat]

Re: Which propeller should i get

Hi miichael,you really need to know your rpms at WOT.less pitch/diameter = more rpm. <br />more pitch/diameter = less rpm.I have just fitted Hustler props to my boat & Im very impressed.They are a 2 part prop.The hub & an interchangeable housing available in different pitches/diameters.The good thing about them is a new housing is about the cost of a repair.You could get a lower pitched prop for waterskiing & a higher pitched one for speed.Try this guy he may be able to help emailropdok@aol.com or his website is www.BoatpropsRus.He has been very helpful.