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Best Prop for my Bird?

RSMRSM Posts: 3 Greenhorn
edited June 3 in Boating #1
I have a 167 with a Yamaha 130 2 stroke (L130A). Engine is mounted 1 hole from being as low on the transom as it will go. Interested in hearing what prop is best for this configuration? I have a 16 pitch 4 blade on there now but am not getting the best performance. Hole shot is more than adequate but it is not getting anywhere near the speed I should be getting.

Thanks.

Robert

Replies

  • goalmongoalmon Posts: 28 Deckhand
    I have the same set up. Ran 48.6mph at 5900 rpm this weekend with 2 guys and 20 gal of fuel. Seems like there is a bit of prop "slip" with this set up. Would also like to hear from others. Thanks.
  • goalmongoalmon Posts: 28 Deckhand
  • waldnerrwaldnerr Posts: 1,040 Officer
    I'm not sure this is of any help, but I have the first consumer 16'7" (a c/K hull) pushed by a '97 115 carbureted Ocean Runner. We (the old Egret crew from Dania, and I) tried a number of props, mostly Turbos, on this setup, and the boat just didn't perform right. We finally had Spinelli make a custom 12 3/4 X 17" cupped 4-blade wheel, and the boat came alive. I'm not sure whether the horsepower of my old Johnson was measured at the head or the prop but, in any case, you have considerably more power than I do, and I believe a 16" wheel is too small in pitch for your rig. A 4-blade will reduce slippage since you'll have more wetted surface in the same diameter prop; putting cup in the blades will also help the prop hold water. A 13 1/4 X 19" cupped 4-blade might be in the ballpark for you. If you can't get the rpm's that you should or you want to improve your holeshot, drop down to a 17" pitch wheel. This link might be useful to determine your prop's efficiency: http://www.rbbi.com/folders/prop/propcalc.htm.
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