quote:
Originally posted by hardie
You have to compare gear, water state, currents, wind strength, wind density, fins, boards, sails, mast, boom, volume of board, rider weight, skill level, that I think is the fairest comparison.
We can put up a Speed sailing thread here just for fun though.
..but it's a start
quote:
Originally posted by ka43
Wineman, Im 90kgs before beer
Im pretty hopeless at estimating wind speed but all I know was it was bloody light and very short runs. Just to get wet basically and to see what sort of efficiency I could get. I dont understand your theory or calculations so Im just sticking with double windspeed
everyone knows that to go really fast you have to have lots of wind, eg/ Finian doing 48.7 in gusts of 50-60 knots.
You look at the efficiency of someone like Chris Lockwood, hes not a big bloke but is usually in the top 5. besides raw strength,size and Jatz crackers the size of watermelons like Finian he is smooth (Ive never seen the guy sail but from posts on GPS its obvious).
Just hanging onto the biggest sail possible is not the go anymore, its efficiency.
hey Elmo, can you give us some of your experience on this??
Now imagine this place when the tide drops far enough the reef gets exposed, you get long narrow channels of dead flat water. If the wind is from the right direction there is no stopping you, and even though it's FNQ, it can howl there. I don't have any small gear for the extreme days anymore, but should be fun in moderate wind.
quote:
Originally posted by kato
Its interesting to look at the speed v wind ratios. 35kt in chop is scary but at Sandy Point just an easy walk.Having flat water is the key.Looking back at some old times, my best ratios are with a 7.0 on a kids pro with 8 to 15k in small chop. Sandy Point in high wind the ratios are worst.Inverloch with a 7 ,30.2 in 15-20k=2.01 Sandy Point on a speed board with a 5.0 ,39.96 in 20-30= 1.33 Now if I can just swap the ratios around. Any ideas????
quote:
Let's try this as a starting point.....
In theory,
likely most efficient wind speed (average)- 15 knots
median board vol - 150 lt
median sail size - 7.0 m
median rider wgt - 80 kg
my random adjustment % for variation from median
Variants - simple
1. Board volume......for every 10lt over -1%, under +1%
2. Sail size.........for every 0.5m over -5%, under +5%
3. Rider weight......for every 5kg over +1%, under -1%
4. Wind speed (aver/measured at launch pt)
...........for every 2knt vary from 15knt +1% (cutoff 10 knt & 25knt)
Soooo...
if KA43 is on 111 lt board(+4%), 8.5 m sail(-15%), say 80kg(0%), wind 13knt(+2%)....Total (-9%)
If KA43 had max 26 knt, then say aver 20knt on run..
Speed Efficiency = 20/13x0.91 = 1.40
mmmmmmmmm...needs some work..but it's a start
. Don't know how to work it out though. Leave that to the experts but i think it should be there.quote:
Originally posted by Troppo
hurry up and buy a gps bob so i can borrow it.
ohh yeah you do sail like a nana!
quote:
Originally posted by Harrow
How are you guys defining your speed? Are you using 2 second peak readings, 10 second peaks, or what?
The GPS speed sailing web-site average of five runs over 400m, or whatever it is, is a bit too complicated for the casual free-rider, but just the same it would be nice to compare apples with apples, also I don't want to think I cracked 30, when everyone knows a 1 second average could be subject to a large error.
So I'm wondering, what is the consensus for a reliable reading?
