Hi, Just wondering how you figure out a ROUGH board volume if it isnt stated on the board
dimensions: L- 265cms W- 55cms depth- 6cms
thanks

109l - 111l I have one that just falls inside those dimentions. Its fibreglass isnt it?

yep, it narrows down to a point at the bow(not a round bow) and flattens off really thin at the back so im assuming 100-105L perhaps
thanks

Length X width X depth gives you 87.45 litres but that would be if it was a rectangular prism shape. The board has edges and corners cut off so it would be a fair bit less than that I would think. Under 80 litres????
That's my thoughts anyway. No guarantee.

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waggles56 said...

Length X width X depth gives you 87.45 litres but that would be if it was a rectangular prism shape. The board has edges and corners cut off so it would be a fair bit less than that I would think. Under 80 litres????
That's my thoughts anyway. No guarantee.

I would listen to the teacher;). Although I think your measurements might be off a bit an that makes a huge difference.

A less practical way to measure volume would be to fill a container (larger than the board) to the brim with water. Submerge the board in the container with the water just enough to ensure its completely covered (water will spill out). The water that has spilled out will be precicely the litre volume of the board. Alternatively the amount of water needed to fill the container to the brim will be exactly the same amount.

You can also attempt to use a cad program (i think someone has posted about it here) to try to design a board to exactly the same dimentions. You will get the volume from the program.

Or you can try to use graph paper and work out roughly the cubic centimeters and divice that by 1000 to get liquid volume.

Or you can take that dinosaur to the tip and get a board that has the volume written on it, which will be easier to ride and use.

Hey waggles did I pass my grade 4 math logic???

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jermaldan said...

waggles56 said...

Length X width X depth gives you 87.45 litres but that would be if it was a rectangular prism shape. The board has edges and corners cut off so it would be a fair bit less than that I would think. Under 80 litres????
That's my thoughts anyway. No guarantee.

I would listen to the teacher;). Although I think your measurements might be off a bit an that makes a huge difference.

A less practical way to measure volume would be to fill a container (larger than the board) to the brim with water. Submerge the board in the container with the water just enough to ensure its completely covered (water will spill out). The water that has spilled out will be precicely the litre volume of the board. Alternatively the amount of water needed to fill the container to the brim will be exactly the same amount.

You can also attempt to use a cad program (i think someone has posted about it here) to try to design a board to exactly the same dimentions. You will get the volume from the program.

Or you can try to use graph paper and work out roughly the cubic centimeters and divice that by 1000 to get liquid volume.

Or you can take that dinosaur to the tip and get a board that has the volume written on it, which will be easier to ride and use.

Hey waggles did I pass my grade 4 math logic???

A+ Mate!!! You have passed with flying colours. Archamendes principle explanation 100%

Another way to get a rough idea would be to jump on the JPAustralia website, (or other manufacturer) and in their board section find a board with similiar dimensions, although most are a bit shorter nowdays, and see how many litres it is.

Willing to learn, so can someone please advise what type of easily-obtainable container you could put a board into, to either catch the displaced water or fill up the container after the displacement?

Aleeex, you might also consider this:

www.peterman.dk/windsurf-boardvolume780-gb.htm

The figures for the Bics are pretty good: Bic say that for a 282, the volume was 107 L and for the 279, the quoted volume was 96 L For the 299, the quoted volume was 149 L.

Also agree with Waggles about going onto the JP site: have used this method myself.

Hope this helps.

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WindmanV said...

Willing to learn, so can someone please advise what type of easily-obtainable container you could put a board into, to either catch the displaced water or fill up the container after the displacement?

...the answer my friend, is blowing in the wind, the answer, is blowing in the wind.....

But more importantly,are you concerned about static bouyancy or dynamic bouyancy? heh heh

alex, i get the feeling that isnt a beginner board judging by the volume

Sounds like an old slalom board. Useless to learn on especially with the dimetions you provided.