200mph
12-30-2002, 04:12 PM
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200mph
Hello,
I have a question here, besides all the safety stuff what is really needed for a V bottom or Catarman hull to reach 200MPH? Does anyone have any links to boat descriptions that have done it? I know that it is probably not the safest thing to do, but to me that would be an incredible goal to reach. Any comments/ideas would be appreciated.
Thanks,
Lance
I have a question here, besides all the safety stuff what is really needed for a V bottom or Catarman hull to reach 200MPH? Does anyone have any links to boat descriptions that have done it? I know that it is probably not the safest thing to do, but to me that would be an incredible goal to reach. Any comments/ideas would be appreciated.
Thanks,
Lance
12-30-2002, 05:10 PM
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12-30-2002, 06:14 PM
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Originally posted by catmando
It's very doubtful that a V bottom will ever reach 200. The hull cannot overcome the hydrodynamic forces acting on it. Take the fastest V hull out there(whatever that is), put two 3000HP turbines and Arneson Drives on it, and it MIGHT get there, but I wouldn't want to be in it.
A V hull is not stable at those speeds, which is why all the speed records above 150MPH have been set by cats and three-point hydros.
But maybe I'm talking out of ignorance here. Somebody's bound to know.
It's very doubtful that a V bottom will ever reach 200. The hull cannot overcome the hydrodynamic forces acting on it. Take the fastest V hull out there(whatever that is), put two 3000HP turbines and Arneson Drives on it, and it MIGHT get there, but I wouldn't want to be in it.
A V hull is not stable at those speeds, which is why all the speed records above 150MPH have been set by cats and three-point hydros.
But maybe I'm talking out of ignorance here. Somebody's bound to know.
12-30-2002, 06:36 PM
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Alot will depend on your prop rpm. There are different ways to get to those speeds. Its a function of pitch and rpm. Spinning a high rpm with lower pitch is easier on the driveline but tough on bearings. Running a longer prop will get you there but either requires stressing the driveline or alot of run in to make the power slowly. I'd recommend a shaft drive - Arneson derivitive with a rudder at these speeds.
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