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#51
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BTW, The 250EFI has no stickers on the outside to indicate HP it was recently painted, in a wind storm no less. Hoist the 40 lb lid off and the ECU's have 250 stickers all over.
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#52
10-08-2009, 10:24 AM
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Update
Since I can't afford to fly spareparts down to drive my 20 to 60mph I have taken it upon myself to go on a diet. You know increase my power to weight ratio.
I got a 21pitch prop, repainted the lower and have been working to resolve all motor issues. Hope to raise the motor this evening, set the throttle position sensor and be ready for a lake test this weekend. 
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#54
10-08-2009, 12:11 PM
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Thanks Nipper.
I agree 100%. Kill Switch Lanyard to be worn at all times when boat is in motion, no matter what speed. In addition we will have a full life vest, no riders and a couple bystanders with 911 on their speed dial until we see how it reacts. Hopeful to get some pictures. I don't care to take pictures while driving but will improvise there, maybe a quick shot of the GPS at maximum velocity.
54 was without drama, no ill tendencies except you have to train yourself to watch for big waves much farther ahead. I posted it before, the extra speed is a novelty that won't be used much. But, I would be lying if I said I wasn't having fun with this endevour.
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#56
10-12-2009, 08:00 AM
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Quote:
Trip to the lake was a huge disappointment, 96 degrees, no wind, too much prop, motor too high, less top end and the motor malfunctioned. It would only turn 5400 trimming to the moon. I had a rider that saw 52 mph on the gps. The motor will need to come down two holes. The center of the gearcase is now 2" below the bottom of the boat with the 30" setback. On plane I can see the water 2" below the ventilation plate and at this height the prop is surfacing with trim at wot although water pressure was always good. The prop is ventilating somewhat in the turns. The setup was not right and going to the 21p Thunderbolt was too much prop. I will have to send it off to be re-pitched since I bought it. The motor dropped off about half way thru the test session. Something crapped out with the fuel system or the ignition. It wouldn't even get on plane. I don't think I hurt it too bad, it still has a good smooth idle. I am happy it died in the lake instead of the Gulf of Mexico but  NOW WHAT?
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#57
10-12-2009, 10:25 AM
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With respect to props, Ferm you were right on the money, I should have tried a 19 Mirage. I really thought it might turn the 21 with the motor raised up. I may have already seen the highest top speed. The giant diameter of the new prop really made a huge difference.
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#58
10-12-2009, 06:27 PM
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sorry about pointing you in the wrong direction on the 21, I guess Ferm nailed this one, but you do need to stick with the same style prop, just 2 numbers down
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#59
10-13-2009, 07:17 AM
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Quote:
I agree, the style of prop is the correct choice for all around performance. It has more rake and cup than the prop I was running to 54 mph. This one carries the bow a little better and still has a great holeshot. If all holds true I should be just right with a 19 Mirage, Ferm nailed it alright. I can keep this one for a spare or make it into the right prop by sending it out. Any thoughts there?
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#60
10-13-2009, 07:45 AM
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Quote:
You could reach 60 with a modified motor I think it would take 280 or 300 hp on a light version set up for speed. I never felt the boat was out of control at 54. It handled great. There are some out there now running 54 or better with less hp than what I tried. I have concerns about the additional weight of the added hp and just how practical is it? Max hp = 225. That is a great recommendation IMHO.
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