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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 |
All you need is a bottomless checkbook:D
Sorry. Not very helpful, but had to say it.:) |
lol I know that much :-)
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How about an 80 MPH boat with a 120 MPH tail wind? ;) :D
Seriously, turbine power is the only thing that will get you to the promised land without rebuilding 4 piston/pushrod internal combustion engines after each 200MPH stint... |
You could give these guys a call Callan Marine I believe they have been over 200mph.
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Even with turbines you won't see a vee run anywhere near that. You'll run out of bottom long before hp. A tunnel hull is the only way to do it.
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It takes two 1850hp turbines for Jetset to reach into the mid 190s.with a 40' skater. Also it takes 20,000 RPMs.
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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. |
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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Personally I do not see any problem at all with a Piston Powered Cat going over 200.
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