I was thinking about updating my board but I guess I should find the volume of my existing one first (wouldn't be too happy buying the same volume again )

Any suggestions as to the best way to guesstimate it?

Get a large pan with curved edges that can hold about 120 litres. Put a large bathtub in the pan. Fill the bathtub up with water to the brim. Push the board into the water. Collect and measure the amount of water displaced. Subtract the volume of your arms from total.

Otherwise accept you cannot compare this board to modern boards. The volume of your board, whatever it is, is of little relevance.

Other aspects like where the mast track and footstraps are located are more important. What I am trying to say if there is a modern board of the same volume as yours, it will be very different and probably much better to windsurf.

Fill a big bucket with water mark a line on the side of the bucket were the water level come to. Submerge the board completely in the water. Mark on the side of the bucket the new water level. You now have the volume of water the board displaces which would be equal to the volume of the board.

Only problem is you need a big bucket!

legless said...
Fill a big bucket with water mark a line on the side of the bucket were the water level come to. Submerge the board completely in the water. Mark on the side of the bucket the new water level. You now have the volume of water the board displaces which would be equal to the volume of the board.

Only problem is you need a big bucket!

That wouldn't be accurate at all. It would be like trying to measure an extra 10ml in a regular beaker.

I think the best way would be to use something like boardcad or akushaper and recreate the dimentions. You should get something relitively close.

Wouldn't a professional board building company use some sort of 3D scanning machine to measure volume?

barn said...

legless said...

barn said...

legless said...
Fill a big bucket with water mark a line on the side of the bucket were the water level come to. Submerge the board completely in the water. Mark on the side of the bucket the new water level. You now have the volume of water the board displaces which would be equal to the volume of the board.

Only problem is you need a big bucket!

That wouldn't be accurate at all. It would be like trying to measure a an extra 10ml in a regular beaker.

It is how they do for real I and it is very accurate.

I know that's how some do it. Add 5 litres to a bucket big enough for a board to fit inside and the human eye couldn't accurately read this of a marking on the side.

That's why beakers are useless for any accurate chemistry.

Who said anything about the human eye!? In addition we are talking 80 liters plus slightly different from a chemistry beaker.

Archimedes had it figured out ages ago.

Fill the container till it overflows.

Then put the board in and submerge it, capturing all the water that overflows as you're putting the board in.

Now you can measure or weigh the water that was displaced.

^Assume they need to measure formula boards too, and raceboards?

Is there a 3m vertical, metre wide beaker?

barn said...
^Assume they need to measure formula boards too, and raceboards?

Is there a 3m vertical, metre wide beaker?

Yes why not.......you better make it 4m as raceboards tend to be 3.8m long.

You seem to have a hang up with the word beaker.....I never said beaker.

Thanks for the advice guys (even an offer to work it out r2908). Maybe I should just try some newer boards on the water. Local guy offered me just that (thanks Philip ).

What spurred me into updating the board was last week I was sailing at Lake Illawarra entrance and the tide was going out like the clappers. Wind died and I dropped the rig into the water & couldn't uphaul it . So here's me sittin on the board heading out the entrance - problem ahead was where the ocean met the outgoing tide the water looked very angry (maybe sucking the rig & me under). Managed to get to the breakwater rocks before that but foot got cut & bruised from whatever creatures live on those rocks.

Anyway I decided
- to get a board with a bit more volume
OR
- don't sail at the entrance on the OUTGOING tide . If I do, just make sure I have a valid VISA for New Zealand

barn said...
^Assume they need to measure formula boards too, and raceboards?

Is there a 3m vertical, metre wide beaker?

Will it fit in a wheelie bin? measure half at a time if it does? catching the displaced water will be hard so measure what it takes to refill it?

Another thread where everyone is right


Barn is right that the water level rise in a container large enough for a horizontal board, is stuff all and you'd struggle to be accurate.

Legless is right that in a vertical container it would be a piece of cake.

I think a couple of us said that it is irrelevant as modern boards are better in so many ways.

But it took a kiter to suggest half the board at a time in a wheelie bin ....... which would be so damn easy. Shut up, Chris.

Sit the board in a pool and add gym weights on to
the deck until the board is below the water surface
work out how much weight you used times it by something devide it by something add and subtract just for the hell of it and you'll be more confused than ever.f
One litre of water = 1kg

I cant belive how shiny and new that board looks for its age. It dosent look used to me, must be really slippery when wet!