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Author Topic:   97 20 Dauntless

merc125 posted 03-08-2004 04:00 PM ET (US)
I just purchased a very nice 97 20 Dauntless dual console 175 evinrude, sea trial went very well, but this boat is larger and heavier than my previous boats. Top about 42 and lots of bow rise coming to plane. What type of performance could I expect with a 200 or 225? Gross weight of my last boat was about 1/2 of the whalers .MartyD
jimh posted 03-09-2004 09:56 AM ET (US)
Boat speed generally increases with horsepower at an exponential factor of 0.5 (i.e., at the square-root of the horsepower increase).
northwhaler posted 03-09-2004 04:22 PM ET (US)
merc
One thing to consider in going to a 200-225 is the additional weight of a new motor. Your Evinrude (according to NADA) weighs in at about 370 pounds. A 200 Opti..497#'s, a 200 Evinrude...520#'s, a 200 Yamaha...450#'s and up depending on model. Four strokes are, I believe all over 500#'s.
My 1999 Ventura (same hull, I believe as your 97) max's out at about 46 MPH with a 200 Optimax. Lot's of $$$ to repower your boat for 3-4 MPH gain. With a full load of fuel, and the weight of the Optimax on my stern, the stern drain holes are underwater, and the bottoms of my side scuppers are just below the waterline as well, when the boat is tied to the dock. You may experience the same nuisance if you add 100 plus pounds to the back end of your boat.
merc125 posted 03-10-2004 10:41 AM ET (US)
Thanks , I would probably never see the extra 4 mph here on the Barnegat, When its not windy, there are too many wakes. I guess I will wait and see how it performs sking, perhaps a prop with a bit less pitch will get me on plane quicker. Present prop SST 14 1/2 X 17. MartyD

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Author	Topic: 97 20 Dauntless
merc125	posted 03-08-2004 04:00 PM ET (US) I just purchased a very nice 97 20 Dauntless dual console 175 evinrude, sea trial went very well, but this boat is larger and heavier than my previous boats. Top about 42 and lots of bow rise coming to plane. What type of performance could I expect with a 200 or 225? Gross weight of my last boat was about 1/2 of the whalers .MartyD
jimh	posted 03-09-2004 09:56 AM ET (US) Boat speed generally increases with horsepower at an exponential factor of 0.5 (i.e., at the square-root of the horsepower increase).
northwhaler	posted 03-09-2004 04:22 PM ET (US) merc One thing to consider in going to a 200-225 is the additional weight of a new motor. Your Evinrude (according to NADA) weighs in at about 370 pounds. A 200 Opti..497#'s, a 200 Evinrude...520#'s, a 200 Yamaha...450#'s and up depending on model. Four strokes are, I believe all over 500#'s. My 1999 Ventura (same hull, I believe as your 97) max's out at about 46 MPH with a 200 Optimax. Lot's of $$$ to repower your boat for 3-4 MPH gain. With a full load of fuel, and the weight of the Optimax on my stern, the stern drain holes are underwater, and the bottoms of my side scuppers are just below the waterline as well, when the boat is tied to the dock. You may experience the same nuisance if you add 100 plus pounds to the back end of your boat.
merc125	posted 03-10-2004 10:41 AM ET (US) Thanks , I would probably never see the extra 4 mph here on the Barnegat, When its not windy, there are too many wakes. I guess I will wait and see how it performs sking, perhaps a prop with a bit less pitch will get me on plane quicker. Present prop SST 14 1/2 X 17. MartyD