Forums > Windsurfing   Gps and Speed talk

How fast is slalom board ?

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Created by Macroscien > 9 months ago, 31 Oct 2013
Bonominator
VIC, 5477 posts
8 Nov 2013 9:48PM
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mr love said..

OK, That makes sense. Your challenge is to repeat the speeds, same spot in a 20-30 knot SW!!!


That would be really nuts. Seems to be two discussions here. How fast slalom board? How fast in the LOC? I'm answering the first mainly. In a broad downwind slalom race that's not in open ocean, 28-33knots board speed not unheard of. In rough open water, say 25-28 knots board speed.

BTW I was using a KA 23 Symmy in that slalom board, so someone using a 28-32cm slalom fin would have a hard time keeping up when sailing broad.

Ian K
WA, 4048 posts
9 Nov 2013 6:39AM
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So until we get an equivalent of the Beaufort scale for water condition ( if that's possible as a single, or even as a two or three number set), "How fast is a slalom board?" is a "How long is a piece of string?" sort of question.

But when someone does figure out a Beaufort scale for water condition it'll open up a multitude of extra categories for GPSteamchallenge.
For me, at my home spot, beyond the protection of the reef, out where the challenge is, 28 is the new 40.

Macroscien
QLD, 6806 posts
9 Nov 2013 11:02AM
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My intention was to differentiate Slalom board ride on the choppy water to speed boarding on the absolutely flat water.
Getting above 30 ktn is real challenge for me, but for flat channel speedster getting above 40 could be walk in the park.

If we split the Slalom category into smaller groups. What we could expect from board like mine JP 118 L 68 cm when ridden by top sailor ?
I am still considering open bay condition rather not open ocean with chop/swell no bigger then 1 meter.
What could be ultimate sail size , fin size then for maximum speed for that board ? Is my 8.0 and 37.5 is ideal combination ?

If racing slalom rider approaching 35 ktn speed are using much smaller boards?

Macroscien
QLD, 6806 posts
9 Nov 2013 11:11AM
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I am preparring for next annual Green Island marathon.
What do you think will be ideal set for 85 kg ? And wind up to 20- 25 ktn ?



boardboy
QLD, 554 posts
9 Nov 2013 11:11AM
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Macroscien said..

My intention was to differentiate Slalom board ride on the choppy water to speed boarding on the absolutely flat water.
Getting above 30 ktn is real challenge for me, but for flat channel speedster getting above 40 could be walk in the park.

If we split the Slalom category into smaller groups. What we could expect from board like mine JP 118 L 68 cm when ridden by top sailor ?
I am still considering open bay condition rather not open ocean with chop/swell no bigger then 1 meter.
What could be ultimate sail size , fin size then for maximum speed for that board ? Is my 8.0 and 37.5 is ideal combination ?

If racing slalom rider approaching 35 ktn speed are using much smaller boards?


if you put as much effort into sailing as you do into posting dribble on seabreeze then going over 30 knots wouldnt be such a hurdle for you.

vando
QLD, 3416 posts
9 Nov 2013 8:39PM
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Macroscien said..

I am preparring for next annual Green Island marathon.
What do you think will be ideal set for 85 kg ? And wind up to 20- 25 ktn ?





Well we had 20-25 a couple years back for the event most were on 7s. you have to sail for an hour so pays not to go too big unless ya super fit

Macroscien
QLD, 6806 posts
9 Nov 2013 8:57PM
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vando said..

Macroscien said..

I am preparring for next annual Green Island marathon.
What do you think will be ideal set for 85 kg ? And wind up to 20- 25 ktn ?





Well we had 20-25 a couple years back for the event most were on 7s. you have to sail for an hour so pays not to go too big unless ya super fit


Thanks Vando . Last year I was on 7.4 but in amateur categories. Obviously when pro slalom started all passed me later on. What size board do you suggest , If condition similar to last year ?
I don't know your Bay at all and still experimenting with boards and sails

FormulaNova
WA, 14654 posts
9 Nov 2013 8:31PM
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vando said..

Macroscien said..

I am preparring for next annual Green Island marathon.
What do you think will be ideal set for 85 kg ? And wind up to 20- 25 ktn ?



Well we had 20-25 a couple years back for the event most were on 7s. you have to sail for an hour so pays not to go too big unless ya super fit



So, you are saying, rig an 8.5m then?

Oh, I just re-read it, and saw the 20 knots. Maybe a 10m?

Macroscien
QLD, 6806 posts
9 Nov 2013 11:40PM
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I found the record on ka72 for the fastest sailor at this marathon run above to Green Island

Peak 32ktn !

Serial Number: ?832004608
User Name: ?MVDP
Device: ?Navilink.GT31.Test
V1.4(B0803T)
All results are Doppler.
Session Date:?17/12/2011
Number of Points:?7807
Location: (Suggest Another Name)?Manly, QLD, AU
Approx Timezone:?10
2 Second Peak (kts):?32.26
5x10 Average (kts):?29.78
Top 5 5x10 speeds:?31.12
Top 5 5x10 speeds:?29.94
Top 5 5x10 speeds:?29.36
Top 5 5x10 speeds:?29.29
Top 5 5x10 speeds:?29.21
1 Hr (kts):?21.57
Alpha 500 (kts):?22
Nautical Mile (kts):?27.61
100m peak (kts):?31.5
Total Distance (km):?43.87

Results Link (to revisit this page):
Google Earth Overlay

vando
QLD, 3416 posts
10 Nov 2013 12:16AM
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Thanks Vando . Last year I was on 7.4 but in amateur categories. Obviously when pro slalom started all passed me later on. What size board do you suggest , If condition similar to last year ?
I don't know your Bay at all and still experimenting with boards and sails


I was on a IS97 that day gets pretty rough in the middle of the bay on a high tide.
Great Race the top 2 were neck to neck all the way to the finished where I pushed it too much and crashed 50m off the finish.
Managed a quick recovery though to get 2nd.

vando
QLD, 3416 posts
10 Nov 2013 12:17AM
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Macroscien said..

I found the record on ka72 for the fastest sailor at this marathon run above to Green Island

Peak 32ktn !

Serial Number: ?832004608
User Name: ?MVDP
Device: ?Navilink.GT31.Test
V1.4(B0803T)
All results are Doppler.
Session Date:?17/12/2011
Number of Points:?7807
Location: (Suggest Another Name)?Manly, QLD, AU
Approx Timezone:?10
2 Second Peak (kts):?32.26
5x10 Average (kts):?29.78
Top 5 5x10 speeds:?31.12
Top 5 5x10 speeds:?29.94
Top 5 5x10 speeds:?29.36
Top 5 5x10 speeds:?29.29
Top 5 5x10 speeds:?29.21
1 Hr (kts):?21.57
Alpha 500 (kts):?22
Nautical Mile (kts):?27.61
100m peak (kts):?31.5
Total Distance (km):?43.87

Results Link (to revisit this page):
Google Earth Overlay


Wow amazing what you can find on there

remo81
QLD, 678 posts
11 Nov 2013 6:56PM
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vando said..

Thanks Vando . Last year I was on 7.4 but in amateur categories. Obviously when pro slalom started all passed me later on. What size board do you suggest , If condition similar to last year ?
I don't know your Bay at all and still experimenting with boards and sails


I was on a IS97 that day gets pretty rough in the middle of the bay on a high tide.
Great Race the top 2 were neck to neck all the way to the finished where I pushed it too much and crashed 50m off the finish.
Managed a quick recovery though to get 2nd.


Vando I think that is called choking

KA360
NSW, 803 posts
12 Nov 2013 1:27AM
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Bonominator
VIC, 5477 posts
12 Nov 2013 1:46PM
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They look like they're doing about 10 knots.

evlPanda
NSW, 9202 posts
12 Nov 2013 2:32PM
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So many waist harnesses.



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"How fast is slalom board ?" started by Macroscien