Superboat Reunion
#121
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HEY TRIPPS ARE YOU GOING DOWN TO THE RACE WITH THOSE HOT BABES FROM THE SUPERFEST PHOTO.YOU ARE THE GRAND WIZZZARD. ALSO DOES ANYBODY KNOW THE SPEED CALCULATION FORMULA FOR A 1.36 DRIVE THE 1.5 IS RPMXPITCHX.667X.00094697=MPH THAT.667 HAS TO BE A DIFFERENT NUMBER THEN TAKE THE THEORETICAL AND DIVIDED BY THE ACTUALE TO GET THE SLIPPAGE
#123
VIP Member
VIP Member
I don't know of a clean number to just multiply by, but here is how I would do it:
Engine Speed (rev./min.) X Drive Ration (1/1.36 or 1/1.5) X Prop Pitch (inches/rev.) X (1ft/12inch) X (1 mile/5280ft) X (60min/1hour) = Theor. Speed
Example: 5000rpm x (1/1.36) x 23in/rev x (1/12) x (1/5280) x (60/1) = 80mph (theor.)
If you have a real efficient hull like a 24' Superboat, your actual speed might be 94% x 80 = 75.2mph
Engine Speed (rev./min.) X Drive Ration (1/1.36 or 1/1.5) X Prop Pitch (inches/rev.) X (1ft/12inch) X (1 mile/5280ft) X (60min/1hour) = Theor. Speed
Example: 5000rpm x (1/1.36) x 23in/rev x (1/12) x (1/5280) x (60/1) = 80mph (theor.)
If you have a real efficient hull like a 24' Superboat, your actual speed might be 94% x 80 = 75.2mph
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Patrick
Patrick
#124
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Thread Starter
Hey Z Z,howes it goin,I know you'll check this post,here we are crusin on a old tanker from St Thomas to Bahamas and I'm postin on oso at the same time!!! Thank God for sattlites sea ya tripps
#125
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HEY TRIPPS BRING BACK SOME WARM WEATHER. I WAS THINKING OF YOU GUYS THIS MORNING ON MY WAY TO WORK I SAW A T/TOP/LEANING POST FOR SALE FOR THE SCARAB. P.S. STILL AT THE HOUSE.
#127
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Thread Starter
Hey ZZ,where did u see that? and i did talk to ralphieboy today,and yes pec,i'm lucky when it comes to weather cep't NYC poker run,and maybe this one ,but you know ill will make the best of it nomatter what . I might have hooked up with that centerconsole in the bahamas,might be a sale!!! the guy is gonna call me,looks pretty goood!!! tripps
#128
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Join Date: Oct 2002
Location: Quogue, NY
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Superfest organizers: Talked to Jcap at the Jersey Boyz meet. Jcap says forget Kismet. I move that we meet at the State Park Tripps recommended and then take it from there. All in favor, say aye.
#130
so where are ya tripps? I dont know the name of the marina he was talking about but it is just west of the bridge on the south side of the inlet (or the north shore of fire island) it is east of the democrat point marina or cove and west of the bridge. Ive been in there a few times and it appears to always be empty.If someone knows the official name maybe we can try to get official permission, although I think it is open and free to the public so we probably dont need offical permission.
Hey tripps werent you supposed to send me something?You asked for my address and im still waitin!!
jim
Hey tripps werent you supposed to send me something?You asked for my address and im still waitin!!
jim