Lenny
10-07-2004, 10:12 PM
Man, what a difference as Matty said. The boat sits higher in the water, aired out a whole lot more, I don;t believe anything is in the water, or at least it "feels" that way, has waaay more bite and really sticks in turns with no blow out at third hole. It is a 14 x 24 P.
The elephant ear that was on it is of NO comparison.
My 3000rpm cruise, (GPS) has gone up about 5mph.
The tach, bouncing around a bit mind you is seeing about 5300, more than 5200 for sure. I wouldn't mind trying one more inch, either diameter or pitch. Best top speed was 58.4 and then I went into a run of waves rather too fast cuz I had to focus on the floor and try and find the GPS :rolleyes: This is with 400 pounds of gas, I had JUST filled up the tank and dunked her, as well, there wasn't a ripple on the ocean, reflectively calm like a mirror, other than the odd boat wake I found. So I figure, with 1/4 or less tank of gas, and a 1' chop I would see 60-62 ???
BUT the thing (port helm) is now spinning right and I have to literally grab the wheel between my knees and hang on hard with my right hand at any speed to keep it from going immediately to port. This is way beyond popeye stuff. This is WWF. I will search out a left hand prop during the winter 'cuz this won't do, plus it has added a slight bit of port heel and it does not have tabs.
Now, about the "prop shaft drilling" :rolleyes:
The mechanic pulled the shaft out this morning at 9am. I got a call at about 9:30am. He said the shaft was bent :eek: I said it seemed fine with little-no vibration. He said, "that's great, but your shaft is bent. I explained that I would like to upgrade the drive anyway in the near future and to just put a hole in it. No problem. Then an hour later, he called back to say he couldn't put the hole in it 'cuz it was too far out of whack and he couldn't even begin to get the tailstock to bore and sit in center. It would have ruined his equipment and given me a terrible, (no worky) hole. Bottom line, $300US for a "used" one that was straight and already had the internal thread. I said go for it. All done ($560US bill), grease job, fresh drive oil, Zincs, seal kit etc, and I was on the water by 5pm and just got in. GREAT run. There is no comparison now to what it was like. It is simply smooth. The prop is amazing. The shaft, now a bar souvenier for "Thunderboat Alley", was, get this, (and I saw it in the vise being rotated against the dial indicator) out by 50 thou :eek: That equated to close to 1/8" of deflection from linear through one full rotation. When we were spinning it it was horrific to look at.
Now, I have to get rid of the NICSON exhaust on there, and look into some sort of hydraulic steering for the Volvo 280, and find a left hand 15 x 24 Ultra or 14 x ??. I must change the rotation back.
Tons of fun. :D
Somehow my slip calculations aren't working out for a 1:61 tho. I get about 25% slip with these numbers at 58.4 @ 5300. I believe I have a set of 1:89's in there hence why I can pull the 24's to redline. What do you think? That would be 8%...
The elephant ear that was on it is of NO comparison.
My 3000rpm cruise, (GPS) has gone up about 5mph.
The tach, bouncing around a bit mind you is seeing about 5300, more than 5200 for sure. I wouldn't mind trying one more inch, either diameter or pitch. Best top speed was 58.4 and then I went into a run of waves rather too fast cuz I had to focus on the floor and try and find the GPS :rolleyes: This is with 400 pounds of gas, I had JUST filled up the tank and dunked her, as well, there wasn't a ripple on the ocean, reflectively calm like a mirror, other than the odd boat wake I found. So I figure, with 1/4 or less tank of gas, and a 1' chop I would see 60-62 ???
BUT the thing (port helm) is now spinning right and I have to literally grab the wheel between my knees and hang on hard with my right hand at any speed to keep it from going immediately to port. This is way beyond popeye stuff. This is WWF. I will search out a left hand prop during the winter 'cuz this won't do, plus it has added a slight bit of port heel and it does not have tabs.
Now, about the "prop shaft drilling" :rolleyes:
The mechanic pulled the shaft out this morning at 9am. I got a call at about 9:30am. He said the shaft was bent :eek: I said it seemed fine with little-no vibration. He said, "that's great, but your shaft is bent. I explained that I would like to upgrade the drive anyway in the near future and to just put a hole in it. No problem. Then an hour later, he called back to say he couldn't put the hole in it 'cuz it was too far out of whack and he couldn't even begin to get the tailstock to bore and sit in center. It would have ruined his equipment and given me a terrible, (no worky) hole. Bottom line, $300US for a "used" one that was straight and already had the internal thread. I said go for it. All done ($560US bill), grease job, fresh drive oil, Zincs, seal kit etc, and I was on the water by 5pm and just got in. GREAT run. There is no comparison now to what it was like. It is simply smooth. The prop is amazing. The shaft, now a bar souvenier for "Thunderboat Alley", was, get this, (and I saw it in the vise being rotated against the dial indicator) out by 50 thou :eek: That equated to close to 1/8" of deflection from linear through one full rotation. When we were spinning it it was horrific to look at.
Now, I have to get rid of the NICSON exhaust on there, and look into some sort of hydraulic steering for the Volvo 280, and find a left hand 15 x 24 Ultra or 14 x ??. I must change the rotation back.
Tons of fun. :D
Somehow my slip calculations aren't working out for a 1:61 tho. I get about 25% slip with these numbers at 58.4 @ 5300. I believe I have a set of 1:89's in there hence why I can pull the 24's to redline. What do you think? That would be 8%...