gradyfish22
GreatGrady Captain
Here are numbers for the OX66 from Boating Magazine's Dec 99 issue. I knew I kept these things for a reason...
OX66 225'2 Prop 19"x15-1/4"
rpm mph nm sm
1000 7.5 1.8 2.0
1500 9.5 1.1 1.2
2000 11.4 0.9 1.1
2500 15.9 1.1 1.3
3000 20.9 1.2 1.4 Range of 277 nm 319sm
3500 27.4 1.4 1.6 Range of 305 nm 352sm
4000 32.0 1.2 1.4 Range of 273 nm 315sm
4500 36.8 1.0 1.2 Range of 231 nm 266sm
5000 40.1 0.9 1.0
5500 44.0 0.8 1.0
That was taken with full fuel and full water with 3 onboard. I contacted the Mag and found out that these numbers were taken with closer to 3/4 of fuel on the way out. It was also flat calm, so I would suspect worse numbers on a normal trip. These engines will keep you within canyon range but will definetly make you plan wisely and have alternate plans.
Cruise with this package is 27.4, with F225's it is 28.7 according to Yamaha. 250 OX66's may boost your cruise about 1.5-2mph but the fuel consumption will be similar to the 225's or worse. With 200 HPDI's Yamaha claims cruise is 33.1mph(with 1/2 fuel, so probably closer to 31.5mph.
FishingFINattic, to me it does not make sense to go to 250 OX66's, your HPDI's provide the best fuel and speed combo for this boat. Four stroke and HPDI number's are similar except the F stroke will burn less at trolling speeds which may equate to running faster on the way home if you save some fuel trolling. It really is a toos up between HPDI's and F strokes. OX66's numbers are fine unless you plan to fish offshore a bit, you have the range but will constantly be watching the fuel guage and may end up calling your days short to safely run in.
OX66 225'2 Prop 19"x15-1/4"
rpm mph nm sm
1000 7.5 1.8 2.0
1500 9.5 1.1 1.2
2000 11.4 0.9 1.1
2500 15.9 1.1 1.3
3000 20.9 1.2 1.4 Range of 277 nm 319sm
3500 27.4 1.4 1.6 Range of 305 nm 352sm
4000 32.0 1.2 1.4 Range of 273 nm 315sm
4500 36.8 1.0 1.2 Range of 231 nm 266sm
5000 40.1 0.9 1.0
5500 44.0 0.8 1.0
That was taken with full fuel and full water with 3 onboard. I contacted the Mag and found out that these numbers were taken with closer to 3/4 of fuel on the way out. It was also flat calm, so I would suspect worse numbers on a normal trip. These engines will keep you within canyon range but will definetly make you plan wisely and have alternate plans.
Cruise with this package is 27.4, with F225's it is 28.7 according to Yamaha. 250 OX66's may boost your cruise about 1.5-2mph but the fuel consumption will be similar to the 225's or worse. With 200 HPDI's Yamaha claims cruise is 33.1mph(with 1/2 fuel, so probably closer to 31.5mph.
FishingFINattic, to me it does not make sense to go to 250 OX66's, your HPDI's provide the best fuel and speed combo for this boat. Four stroke and HPDI number's are similar except the F stroke will burn less at trolling speeds which may equate to running faster on the way home if you save some fuel trolling. It really is a toos up between HPDI's and F strokes. OX66's numbers are fine unless you plan to fish offshore a bit, you have the range but will constantly be watching the fuel guage and may end up calling your days short to safely run in.