Two Identical Props, one is 3blade, one is 4, which one is best?

[walleyehed]

Re: Two Identical Props, one is 3blade, one is 4, which one is best?

Kalteri, for low-pitch 4-blades, go to www.ptprop.com you will find what you need here.

 

[kalteri]

Re: Two Identical Props, one is 3blade, one is 4, which one is best?

thanks guy<br /><br />the problem n 1 is the weigth/power of course, it ain't a wakeboard boat.<br /><br />unfortunately<br />the boats are not as cheap here in N-Europe as <br />overthere. <br /><br />the fin may hurt the wake so I have to consider<br />between 4-blade and 13" pitch. <br /><br />can you say anything general about the pitch<br />recommendations when moving on to 4-blader?<br /><br />at ptprop.com they really have nice ones that sure<br />will help me but those are a bit expensive.

 

[walleyehed]

Re: Two Identical Props, one is 3blade, one is 4, which one is best?

Low pitch 4-blades are hard to find, and generally are going to be specialty items as listed at ptprops.<br />You might want to consider a bow-lifter in 3-blade to keep the stearn down for better wake, only problem there is you may experience porpoise.<br />As for recommending a pitch for 4-blade, that's tough considering the variety of designs available. I think considering a good starting point with a minumum investment I'd go for a 13" pitch, as it could be reworked slightly in either direction. Remember a 4-blade is going to cost more initially, and will cost more to repair/rework.<br />I'll do some looking and see if I can recommend something.....

 

[walleyehed]

Re: Two Identical Props, one is 3blade, one is 4, which one is best?

http://www.boat-props.com/propellers/s/Johnson/Charts/19/74/R <br />Kalteri, this would be possible if you had a prop shop add some cup. I think it's slightly low pitched for your needs, but cheaper than a Power Tech.......take a look!

 

[Dhadley]

Re: Two Identical Props, one is 3blade, one is 4, which one is best?

I cant help myself any longer!<br /><br />Quote "Two Identical Props, one is 3blade, one is 4, which one is best?"<br /><br />Hummmmm...... since one has an extra blade, they arent identical -- are they???? Lol!<br /><br />And we gotta keep OBJ happy so here goes -- play with the X dimension. Raise the motor. At 5500 youre still lugging the motor -- slightly. Lets try to get 5800 with that four blade.<br /><br />Im glad youre having fun!

 

[walleyehed]

Re: Two Identical Props, one is 3blade, one is 4, which one is best?

Kalteri, if you return, let's start a new thread, as we are in the way of the topic discussion here. When you come back, start a new thread using "Prop help" as title, and I'll be looking for that, and maybe Dhadley will have a recommendation as well!