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Fastest Checkmate Hull?????

kind of a loaded question....smaller boats like a 2000 or 2100 run great...but do they run 100+ ???? personally seen a 251 run 114 on radar at a organized event, and was not super lightened, piece either...
 
All are good arguments! Bottom line is, Cmate has made alot of fast boats. But I would still like to know what the weight to hp ratio is for any of these boats. Like GEP's predictor, how many hp, how much does it weigh, or SCT's 300, how much does it weigh to run 90 with 600hp, Wildmans 2100 at 96mph. These are boats that we already know how fast they are(FAST), but how efficiant are they. I watced a 26 foot cat run 120 on radar, but that was with 1600hp. To find the answer to the original question, we need one of the math guru's on here to figure the ratio on a handful of boats that we all know what kind of spee's they run. Like GEP, we already know he can run 90 and we know for sure he can drive, but what is the efficiancy ratio?
 
I've been watching this thread and have been kind of hesitant to chime in as it seems like one that could just lead to endless debates of the "fastest hull," as there are so many factors involving a boat's speed besides just hull design.

The setup of the boat, as we all know, is extremely important including prop design, prop pitch, prop diameter, hull weight, weight balance in the boat, prop in realtion to the bottom, setback, max rpm and the list goes on...

One way of measuring efficiency of a boat and it's setup is prop slip. The problem is it takes into account all factors involved in the boat's setup, not just the efficiency of the hull.

I like the original question and would like to know the answer myself, but I don't think it can be answered comparing our boats against each others as there are way too many variables. Not to mention we're spread all over the country so you would also have to account for environmental variables like altitude, temp, humidity, fresh vs salt water, etc.
 
just went across the street to landfill scale with boat. put a moving blanket down dumped the boat on and got in......6 gallons fuel,engine and battery and a few rods and a paddle 741 lbs total 110 hp 58 mph with a 17 pitch alum prop. you should of heard the stupid questions from the people coming in to get rid of the trash!:rolleyes:
 
paulsboats said:
just went across the street to landfill scale with boat. put a moving blanket down dumped the boat on and got in......6 gallons fuel,engine and battery and a few rods and a paddle 741 lbs total 110 hp 58 mph with a 17 pitch alum prop. you should of heard the stupid questions from the people coming in to get rid of the trash!:rolleyes:
Click to expand...
6.736 lbs per 1 hp and 1 mph per 100 rpm
 
prop pitch question

how does it calculate? example....17 pitck moves forward 17 inches per revolution or per 100 revolutions?
 
And this little tidbit from somewhere in the Book of Jim, possibly the chapter on Acceleration and Defying Gravity, but more likely in the Chapter on High Speed and Low Drag. "Since water is not a solid,friction wont apply since it is a function of solid on solid. Fiberglass on liquid water will be a function of drag. Unfortunatly, drag is more complicated than friction in that it is dependant on shape, area, and velocity." This may be why it may be difficult to come up with a control on size, speed, and HP....
 
I love this thread! Lots of people giving there opinions and ideas, good imformation and not the first attitude or curse word.Waaaay Koool!
 
paulsboats said:
just went across the street to landfill scale with boat. put a moving blanket down dumped the boat on and got in......6 gallons fuel,engine and battery and a few rods and a paddle 741 lbs total 110 hp 58 mph with a 17 pitch alum prop. you should of heard the stupid questions from the people coming in to get rid of the trash!:rolleyes:
Click to expand...
Did you get a picture?
 
Cool opinions guys! :cheers: I know its not a real straight forward question and probably not really a way to accurately answer it without doing some real scientific testing, but was curious what people thought and what hulls people might think were the most efficient per horsepower.

Been busy, and not a math guru, but maybe I'll plug some numbers this week on some boats just to get an idea for some of those faster ones what they look like. Would be cool to make a spreadsheet from all the data from the "how fast is your checkmate thread" and get a range for each hull with different HP, and might even out some of the setup differences.
 
Another tidbit from The book of Jim, Chapter on High Speed and Low Drag, it talks about Newtons law and a whole lot of other stuff that can hurt your head early in the morning. The level of horse power goes up quickly in relation to speed. We got force shoving our vessel forward, but we also got the air (drag), and the water slowing us down. (Somewhere right around here the "no replacement for displacement" comes into play) So maybe 15 hp would take us 30 mph but it might take 50 hp to get us to 60 mph, and then 150 hp to get us to 100 mph on land. Then we would have to come up with a number for the resistance of water on the hallowed Checkmate fiberglass.....
 
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