Re: Just bought a 4 blade prop
Well, I tried out the prop over the last few days and I am definately impressed with the results.
Surprisingly, my WOT stayed right at 4800. Exactly where it was with the 14.5 x 19 3 blade. Holeshot was dramatically improved. Even with 6 adults on board, it still leapt onto plane better than it did with 4 adults and the 3 blade.
Slow speed handling, specifically around the dock, was much better. Especially when using reverse. It was so responsive that docking almost became a pleasure.
There was absolutely no blow out in heavy cornering. This made the tube rides a lot more exciting as we could really sling shot the "tough guys" from side to side. Previously, my 3 blade would lose 20 - 30% of its speed when aggressively turning.
The boat rode much higher on plane than previously. This may be my only complaint. I had to trim out a little less to avoid some slight chine walking. Nothing drastic though.
My top speed went from just over 45 with the 3 blade, down to 42 mph (gps). It's difficult to say how accurate those speeds really are, because I was on a tidal river and I did not monitor the tides. I did take the speeds going down river, but the tide can change the water speed by as much 5 mph. I've gotten as fast as 48 with the 3 blade previously, but never with 6 adults!
Overall impression: I love this prop for watersports and/or lots of passengers. It was a real pleasure at the dock. If I am in for a go fast day, I might look into a SS 3 blade with more cupping.
