[pcbass]

What do I put for gear ratio ?
When I put in my currnet speed & rpm’s, it said 1.65 .

[pcbass]

Your 4 blade is a little too big . Im running to same boat , with 25 3 blade . It blows out in 4 footers so I tried half way plugging the holes . Wouldnt even try to get up on plane . Anyhow , When going to a 4blade you have to go to a small pitch . I would say a 23 in a thur hub , or 24 in a over the hub .Im hope ing to try one this weekend myself . Ill let you know what I find out .The only advantage That I can find for a four blade is on the great lake . They dont blow out as much . The boat feels like its higher in the water , or on . And the biggie , more bow lift .But keep in mind , pitch = how far the boat is soppose to move with one turn of the prop . So by going to a smaller pitch , you may slow down a little . About 2 or 3 mph. . 5 for a 5 blade .Oh , and I have a friend that runs a 25p. 4 blade ,but he has a 250 . And he has all the holes open .

[pcbass]

I guess everyone here knows more then someone does nothing all day but work on props .Granted , you can try to remove the last plug ,first . But the reasons for using a four blade prop are being defeated by increasing the amount of air around the prop .The 2nd. biggest killer of motors, before vntilated props, was guys trying to run too big of prop . They had no hole shot , but if they did come down on plane theyd fly . But , the time your motor works the hardest is the hole shot .

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