Quiz...I think this could be fun
 

Please define x dimension of a boat. :food-smiley-007:

Distance from the Crankshaft center-line to the bottom of the boat

Propshaft centerline.

Wrink's definition of x dimension.
 

Due to the length of his new boat(47 FEET) he has to walk 4 feet further to get a beer.

X Dimension is equal to how many times that biitch said no before you told her to get bent and bought the boat anyways.

Oh, wait, that would be ex-dementia....sorry. :poopoo:

Looks like we have 5 different answers so far. Are all of the answers correct? maybe. Lets see who else chimes in.

Summer can't get here quick enough! I'll go with post #2

It's the angle at which old man Sy's walker pivots 2 allow him 2 sit on his raised toilet seat!!!:evilb:

The number of girls that can fit on the sunpad

I would think that Captain Kirk knows about the x-dimension, If not Spock knows for sure. :p

My Ex Wife :lolhit:

Was she BIG?? (Dimension Wise?) j/k Lol

It is really from early boat building days when they measured the transom for the drive cutout. They would mark a line straight across the chine (looking at the transom) and measure up from there (Not from the running surface like they do today) Then measure laterally out from center (after finding the transom center) for twin engine boats, and just using the center for singles, They would mark the spot to drill with an "X" hence the X-Dimension....No Sh*t :)

[QUOTE=fastdonzi;3647180]It is really from early boat building days when they measured the transom for the drive cutout. They would mark a line straight across the chine (looking at the transom) and measure up from there (Not from the running surface like they do today) Then measure laterally out from center (after finding the transom center) for twin engine boats, and just using the center for singles, They would mark the spot to drill with an "X" hence the X-Dimension....No Sh*t :)[/QUOTE



I thought it was the X you draw on the bottom of the boat when you found a good fishin hole ...... so you can find it again .....:eating:....:fish::fish::fish::fish::fish::fi sh::wuerg019:

Correct


Incorrect.

I thought it was the X you draw on the bottom of the boat when you found a good fishin hole ...... so you can find it again .....:eating:....:fish::fish::fish::fish::fish::fi sh::wuerg019:[/QUOTE]

:lolhit::thankyouthankyou:That's it!

it is eally all about the propshaft centerline to keel dimension. BUT, you arrive at it by putting engine in it at a certain height (x-dim) so that with your drive length your prop is where you want it to be. assuming you can still close the engine hatch.

yup.

Crankshaft of the engine?

X dimension=Square root of:

(Camshaft to Crankshaft^2)*(Crankshaft-Propshaft^2)-(keel to oil pan^2)+(lenght of waterline+windsheild Height)/(lenght of boat trailer +number of wheels)-(Tounge weight in kilos+name plate capacity in lbs-saftey equipment weight)+(minum octane rating * % of solid fiberglass of hull+amount fuel burn during 90 second wot blast)

:angry-smiley-038: :poopoo:

Haha.

looks Like DerekandKathy nailed it? With all the talk about drive to keel I never thought about it that way. Good to know...

I always wondered why it was dubbed X-Dimension and not Y-Dimension. Conventional wisdom would imply that any measurement along an X axis would be one that is lateral. The Y axis is most commonly associated with a vertical dimension or measurement.

Sq. Rt. of (5.150^2)(21.8125^2)-(17^2)+(312+18)/(32+4)-(409+2400-113.72)+(89*86.3+1.99) = 131.63049

Asuming it's a bravo boat, trailer full of blinker fluid, and ceramic muffler bearings :party-smiley-004:

No,,,,, that's the sex-dimension. Sometimes also refered to the boats entertainment value, as measured pr. square inch.:evilb:

It's called x- dimension because an azzhole like me dubbed it that.....

Yes, the X dimension is controlled by the engine height.
If you put on a shorty drive, the actual X dim does not change, but he propshaft height does change.

Thanks Griff. So on a twin how would one go about measuring? From crank to bottom of keel? V hull no notch.

And what might be the optimal measurement for propshaft to bottom no boxes?

J you measure from crant to the bottom of the hull directly under the crank, not the keel. It is always measured perpendicular to the crank, no matter the number of engines ect. There is no optimal x as such, it depends on what you want to do. Many twins today run between 17" and 19" in B1 applications. Some a bit less, some a bit more. It also depends on whether the manufacture set it up with shorties and/or boxes from the beginning. When talking drive x-dim, it refers to the distance from input to output shaft.

See some expereinced boaters are learning somthing. From reading what others have talked about in the past I thought it was tottally related to prop shaft height but turns out prop shaft height is just relalted to x dimension and it depends on the length of the drive.

NO wonder you have a cruiser! :lolhit:

Yup, I had to be educated on the subject last year. The term x-dimension is used so loosely its hard to tell WTF some people are talking about, and about half the time its used improperly.

Really it is just that strange place where all of us performace boaters come from where common sense does not exist.

Most people are not moving thier x dimension but moving prop shaft height

Kel wishes U could move your propshaft height!!!!!:evilb: