GPS-Speedsurfing


Interested in feedback as there has been discussion on this site previously over whether tracks can be filtered by a maximum acceleration figure... it has been suggested that 2 to 2.5 m/s ² is getting outside the range possible! I have a track that gives acceleration over 7 one second segments as 2.3 - 4.0 - 4.5 - 4.3 -3.6 - 2.2 - 1.6 This is staggering as it is zero to 50 knots in around 7 to 8 seconds and over less than 100 metres from a standing start!! now this acceleration is as good as a 2007 Jag xk from data I could find on the net in a 0 - 96k run the track is backed up by doppler data and 5 other runs in the same session have maximum linear acc of 3.7m/s² 3.1 - 3 - 2.7 and 2 Ok this is a kite I am discussing but what max acceleration values have you recorded that look to be legit and not a spike.... and is there a limit to how fast a kite or windsurfer can accelerate! I suspect that this could be record status for acceleration! For those unsure where to find the acceleration figure in GPSAR under TRACKS PANEL open Track points Table and look for the feild (linear m/s²) Chris Torckler

Baked up by Doppler data so it sounds legit. to me. There is no doubt that kites can accelerate very quickly in the right conditions. I have also had some very impressive acceleration on 90 degree bearaways windsurfing in a 30-35 knots Easterly. from 15 knots to 40+ knots in about 5 seconds. Woooohoooo!

Andrew... the track was run by Gavin Broadbent at Port Waikato in his last session .... I have sent Mal a copy of the track to look at for comment as well.... it would be interesting to search back through your tracks and put up some actual figures so we can get an idea of how relative this is to other sailors..... as I think the acceleration here is top shelf stuff! looking at some of the top tracks run by the record breaking kiters they tend to have a steady acceleration up to top speed with figures like 1.5 to 2.5 .... so very interested to see some actual data put up to compare! ps ... to any one checking figures..... when you open the track point page you can click in the linear field and it will align them in order fastest to slowest.... so its easy to pick out the fastest acceleration figures

GPS TOP 10 2024
1	Vincent Valkenaers	87,90
2	Hans Kreisel	87,08
3	Dirk Doppenberg	83,34
4	Tim Joosten	83,24
5	Tim Humphreys	82,54
6	Jacques van der Hout	82,12
7	Rolf de Ruiter	81,84
8	Patrick Oberlender	81,34
9	Wouter van Hilst	80,73
10	Matthew York	80,63
	..More..

Maand top 10
1	Vincent Valkenaers	86,64
2	Tim Joosten	83,24
3	Tim Humphreys	82,54
4	Jacques van der Hout	82,12
5	Hans Kreisel	81,37
6	Wouter van Hilst	80,73
7	Matthew York	80,63
8	Johnny Tuijn	79,39
9	Orjan Zandvliet	78,80
10	Brendan Lorho	78,45
	..More..

De laatste sessies
1	Bert Kuiper	48,57
2	Michel Cyril	65,65
3	Sem Stroosma	68,34
4	Sebastiaan Penninga	49,55
5	Walter te kloese	49,02
6	Gerrit Bosgraaf-Feenstra	62,96
7	Max Shytikov	53,87
8	Andres Baas	61,72
9	Eric van Cann	56,40
10	Pieter Rietveld	63,56
11	Eric Kamminga	60,59
12	Rolf de Ruiter	70,57
13	Martin Henning	40,92
14	Sander van Gelderen	50,48
15	Kenneth Kolsteren	45,54
16	Brendan Lorho	72,03
17	Eric Groot-van Ederen	62,42
18	Edu Hoekstra	69,36
19	Stathis Altintzis	45,03
20	Stathis Altintzis	42,76
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Laatst behaalde PR's
1	Stijn de Bruin	69,61
2	Bob Aarts	60,13
3	Stijn Beks	61,30
4	Timoleon Vlachos	45,24
5	Francois Desvaux	66,49
6	Marijn Rijswijk	55,66
7	Tim Humphreys	82,54
8	Tobias Meier Nkunzana	49,51
9	Simon Stone	47,30
10	Tuur Van Den Broeck	65,60