Learn to love
Windsurfing
  by David Johnson
     UCSB 2008
Outline
•   History
•   The basics
•   The physics
•   How fast can you go
•   My windsurfing journeys
•   Who will break ...
History
• Jim Dake and Hoyle
  Schweitzer patent 1968
• First windsurfer produced 1973
• Sport was the fastest growing
  w...
Different styles

Longboard for more traditional old-style sailing



                      Daggerboard
     Fin




Short...
Different styles




Longboard                 Shortboard
Choosing the right sail
                                  • Pick a sail based on
                           Mast     the w...
Windsurf Accessories




                                                               Waterproof GPS.
Wetsuit. A neopren...
Longboards – Olympic sport
           • The mistral one
             design is the official
             Olympic board
   ...
Shortboards – fun and fast
           • Very manoeuvrable
           • Turn very quickly
           • Short enough to ride...
Formula Boards – the new
       longboard
          • Very wide board that
            can plane in low wind
          • l...
Angles you can sail
       Wind
       Upwind
    “No Go Zone”
     10:00 - 2:00
Steering




      Wind




A              B
Turning Around
       Wind




     Tack

              Start



     Jibe
Floating vs. Planing


                       WOO HOO!

  Woo.
How it works
The physics
   • In 2005 Drake wrote a
     paper studying the
     physics of windsurfing
   • All forces converting
    ...
The physics
How fast can you go
     • Can you go faster than
       the wind?
     • Oh yes – why? - how
       much faster?
     • U...
Places I've windsurfed
The 60's bus
The 60's bus
Standerton 1998
Richards bay 1999
Southampton 2001
Sterkfontein 2003
Langebaan – 2003
Mauritius 2008
New speed record
      • 19 September 2008
        Rob Douglas set a
        new record of 49.84
        knots on a kite s...
Who will break 50 knots
Upcoming SlideShare
Loading in …5
×

Learn to love windsurfing

3,680 views
3,192 views

Published on

How windsurfing works and places I've windsurfed

Published in: Sports
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
3,680
On SlideShare
0
From Embeds
0
Number of Embeds
19
Actions
Shares
0
Downloads
101
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Learn to love windsurfing

  1. 1. Learn to love Windsurfing by David Johnson UCSB 2008
  2. 2. Outline • History • The basics • The physics • How fast can you go • My windsurfing journeys • Who will break 50 knots?
  3. 3. History • Jim Dake and Hoyle Schweitzer patent 1968 • First windsurfer produced 1973 • Sport was the fastest growing water sport in 1981
  4. 4. Different styles Longboard for more traditional old-style sailing Daggerboard Fin Shortboard for high speed and wave sailing
  5. 5. Different styles Longboard Shortboard
  6. 6. Choosing the right sail • Pick a sail based on Mast the wind conditions Sail size Wind speed (MPH) Battens (stiff rods) 9.5 14 8.5 17 7.5 18 Cutout to attach 6.5 21 boom to mast 4.5 30 Mast “sleeve”
  7. 7. Windsurf Accessories Waterproof GPS. Wetsuit. A neoprene Harness. Lets you use your Global positioning rubber suit that gets wet body weight to hold the sail, system. Can plot your inside but still keeps you so your arms don’t get tired. course and keep track of warm. The hook in front attaches to a your distance travelled, loop of rope on the boom. maximum speed, etc.
  8. 8. Longboards – Olympic sport • The mistral one design is the official Olympic board • Has the best upwind capability – great for exploring waterways
  9. 9. Shortboards – fun and fast • Very manoeuvrable • Turn very quickly • Short enough to ride waves • Good for high jumps
  10. 10. Formula Boards – the new longboard • Very wide board that can plane in low wind • long tail fin for easy upwind sailing • Becoming more popular than old longboards
  11. 11. Angles you can sail Wind Upwind “No Go Zone” 10:00 - 2:00
  12. 12. Steering Wind A B
  13. 13. Turning Around Wind Tack Start Jibe
  14. 14. Floating vs. Planing WOO HOO! Woo.
  15. 15. How it works
  16. 16. The physics • In 2005 Drake wrote a paper studying the physics of windsurfing • All forces converting momentum from wind to water pass through sailor • Key opposing forces – Weight/Lift – Heel/Skid – Drive/Drag
  17. 17. The physics
  18. 18. How fast can you go • Can you go faster than the wind? • Oh yes – why? - how much faster? • Up to 2.5 times wind speed • 1993 world record – trimaran: 46.52 knots • 2005 world record – windsurfer: 48.7 knots
  19. 19. Places I've windsurfed
  20. 20. The 60's bus
  21. 21. The 60's bus
  22. 22. Standerton 1998
  23. 23. Richards bay 1999
  24. 24. Southampton 2001
  25. 25. Sterkfontein 2003
  26. 26. Langebaan – 2003
  27. 27. Mauritius 2008
  28. 28. New speed record • 19 September 2008 Rob Douglas set a new record of 49.84 knots on a kite surfer • Set at Luderitz – Namibia (1500km from my home town)
  29. 29. Who will break 50 knots

×