I just got back from 10 days or so in Lake Powell, this was my maiden cruise on "deja la". The Yamaha F-150 has a 15 x 15 1/4 alu prop. During the test ride with the PO last November, with a virtually empty boat with only a 1/4 tank of gas we reached 5300 rpm at WOT. i thought that was a bit low at the time but did not give it further thought until this lake Powell trip.
The boat was now fully loaded for a two week cruise, tanks full, plus 2 5gl. jugs one for extra water the other for the Honda 2000 and kicker fuel.
I added Permatrim, the 9.8 kicker and bracket, the honda generator, the inflatable dink, fair amount of tools, more chain on the rode, 2 spare anchors, food, drinks etc..
It was obvious right away that i needed to raise the water line..
In terms of performance it was also clear I needed a different prop, the first day i would top out at 4200. After playing with the permatrim a bit and the trim tabs and with a little lesss fuel in the tank i was able in super flat water to reach 4500 rpm, still not good and my best speed was with the trim tabs all the way down, as soon as i tried to raise them a bit the speed would drop. the Permatrim was up about 30% for best speed. I was very stern heavy and felt like i needed to add weight to the bow so i did not have to rely so much on the trim tabs. Do any of you C-25 owners go through the same thing? what did you end up with prop. wise? Any insight appreciated. Alain Provost
The boat was now fully loaded for a two week cruise, tanks full, plus 2 5gl. jugs one for extra water the other for the Honda 2000 and kicker fuel.
I added Permatrim, the 9.8 kicker and bracket, the honda generator, the inflatable dink, fair amount of tools, more chain on the rode, 2 spare anchors, food, drinks etc..
It was obvious right away that i needed to raise the water line..
In terms of performance it was also clear I needed a different prop, the first day i would top out at 4200. After playing with the permatrim a bit and the trim tabs and with a little lesss fuel in the tank i was able in super flat water to reach 4500 rpm, still not good and my best speed was with the trim tabs all the way down, as soon as i tried to raise them a bit the speed would drop. the Permatrim was up about 30% for best speed. I was very stern heavy and felt like i needed to add weight to the bow so i did not have to rely so much on the trim tabs. Do any of you C-25 owners go through the same thing? what did you end up with prop. wise? Any insight appreciated. Alain Provost