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SoutherlyBuster

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SoutherlyBuster last won the day on September 9

SoutherlyBuster had the most liked content!

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About SoutherlyBuster

  • Rank
    posting Maniac

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  • Location
    Christchurch, New Zealand
  • Interests
    Kitesurfing, landboarding down hill or with kite, RC gliders, skate boards.
  1. Next Challenge....

    Next EK international event? Yea just keep on dreaming...... almost looks like a salt lake until you see the puffer jackets.
  2. Naish Foil Board

    Yea haa warmer whether, onshore winds, time to foilboard again and clock up hours to become proficient at foilboarding. Getting better at the knack of getting past the breakers at the surf and knowing when to give it away when the surf is too big. Finally cracked the method to get on the board better. Even though I may stretch out my legs fully to seat my feet into the straps before launching, I found that pulling up my knees to my chest so my body centre of mass is as close to the board as possible before trying to get up on the board helps a lot. Otherwise there is just way too much drag from my upper body and legs in the water and too much of a moment arm for the kite to pull me over and up onto the board. The other major help was to aim to jump into the FRONTof the board with my centre of mass at the bulls eye, see below. With the large rounded nose of this board, there is enough planning area there to make it work. The board should also be flat in the fore aft direction. Use your abs to help lift up your body onto the board, aim to dive/pull the kite just down wind off the nose of the board. Next thing that really helped when up on the board is, don’t try to control the board angle of attack with front foot pressure, all that does is push your body centre of mass further aft, rather shift your body centre of mass forward if lift is too much. It is all about controlling the height of the board, which is done by controlling the angle of attack of the wing, which is done by shifting your body centre of mass forward or aft. It can be shown through wing lift analysis, that there is a stable and an unstable mass position of your body. If your mass is forward of the critical position, given every thing else is constant, a slight change in board angle for nose down will result in the hydrofoil wings creating a moment to lift the nose back up — stable. If your mass position is aft of this critical point, the opposite is true, a slight nose down angle change will result in the wing moments enforcing this motion — unstable. Kite up too high and I typically get too much lift, resulting in the hydrofoil shooting out of the water, so have to ride with the kite much lower than I can get away with my surfboard. Kite launching power, less seems better and more stable, compard to what I do on a surfboard or twin tip. So what ever you learnt on a surfboard or twin tip, hoyk that in the bin and relearn. Sure generic kiting and board balance skills are transferable, but every thing else is so different, but hey that is all part of the fun. The fun and challenge continues.
  3. Surfboard

    Noyic! I assume this is for with a kite. Have you strapped on a GPS yet for speed measurements? Like the use of carbon fibre where it is needed. Did you start with a basic foam blank then custom the shape? I think we are all itching to read your review of the board after a water session with it.
  4. Re Peter Lynn

    For a fixed bridle kite, pulling in the rear lines as Nigel said, makes the tail end curve down, this changes the camber of the kite and tries to tilt it forward but the rear lines say no, so the rear lines just get tighter and the kite does not change angle of attack. The inceased camber will give some increase in lift. With the depower kites, through the use of pulleys, the kite angle of attack changes and alters the lift accordingly. With the fixed bridle kites it is a bit of reverse logic, letting the rear lines go a bit slack lets the kite penetrate quicker into the wind, more apparent wind, more lift.
  5. Re Peter Lynn

    Let’s put i another way. The amount of pull a kite genrates come from three things: 1) How strong the wind is blowing, pull is proportional to the square of wind velocity. So if you are not moving the kite, this is the contribution from the wind alone. 2) The apparent wind, the relative motion of the air with respect to the kite. When the kite moves it creates an extra wind in addition to the wind velocity with respect to the ground. Just imagine a fly sitting on the kite, what wind would it feel. So for example as the kite accelarates from the ground to zenith, this velocity with respect to the ground is seen in addition to what the wind is generating. Sining the kite up and down does a similar thing. 3) The angle of attack of the kite with respect to the wind the kite sees. This contribution of load is roughly proportional to the angle of attack .... until it stalls. Depower kites can change this. Fixed bridle kites can not change this. So form this you can see, with a fixed bridle kite, you can only control the kite load via option 2) or fly it to the edge of the wind window where there is not much pull. So when a gust comes you have to stop sining the kite and hang on, or bail out all together. Put it another way fixed bridle kites are either on full blast or nothing. Depower kites give the user options 2) and 3) to control the power, so when the gust comes in and it is too much for you, depower, stop sining and slowly put the kite to your extreme left or right and wait. A lot of the kite sports these days need fine depower control, so manufactures are moving away from fixed bridle kites. Fixed bridle static jumping, proceed with extreme caution. Remember there is no depower control, so if the gust pulls you up there, and if the gust stops while you are up there, you drop like a bag of spuds which can result in hospitalisation. Totally agree with Nigel, if all you want to do is skid along the grass, just get a 3 or 4 square metre fixed bridle kite (cheaper). If you want to later on get into kite buggies, landboard and kite surfing get a depower kite (more of an investment but well worth it for the future, 10 square metre kite size would be a good start). Regards, Norman.
  6. Opening of Spring Road Reserve

    Nice big area to kite on. Good to see the council has not allowed it to be taken up by houses. Just a tad far for us to travel to.
  7. Skate board pumping

    @Freda Latou, the pumping mechanism in your posted video looks quite different to the one I originally posted. The method I posted, well it sort of generates net forward motion but nothing to brag about at least on my long board. Must be some thing else working on your method, not much of a radius happening there, all very short jabs to the left and right.
  8. Round Hill Snowkiting NZ

    Bugger, Round Hill in NZ is closed for the season. Will have to wait till next year for a snowboard plus kite session. Snow Farm is closed for the year as well.
  9. Re Peter Lynn

    Once you fly static, ie stand still and just fly the kite, you will get bored and crave for more. Skidding along the ground down wind can be fun, but you will soon get bored and want more. Then enter landboarding or a kite buggy, infinitely more fun. The reason I say landboard or kite buggy is since you are in Ballarat, not much opportunity for water action. Landboards can also be used for down hill runs when the wind is no good. For the land action, could just go for one of the single skin options. Like Star mentioned earlier or the FlySurfer Peaks. I’ve heard the Ozone Access is also very well suited for the potentially gusty inland conditions.
  10. Skate board pumping

    So for all those science nerds out there that also skate board and or surf board, and others that just like cool stuff, here is an interesting video on the science of pumping on a skate board. How to generate net forward motion on a flat horizontal (no slope) with a skate board, no motor, no pushing off with your foot, just by shifting your weight and travelling in a S shape— this is commonly called pumping on a skate board. I have looked at a lot of instructional videos about pumping and never had any real sucess with them. My son Zac is a natural and can do it well. Then I found by chance the video below explaining the science behind it — it is so simple. Should be able to apply the same technique to a surf board. Not sure if it would work during a light wind kite session since one is teathered to the kite, hmm will try it the next time heading out in the surf heading away from the shore to try and generate some extra speed. Regards, Norman
  11. Multi-Rotor Thread

    I assume the out of focus grass at the edges of the picture was YouTube compessing the hell out of your original? Curious about correct color grading of before and after final cut messed with it. When I tried final cut with go pro footage and stills it ruined the colors and took sharpness out of the picture, appearing dull and this was not taken from footage requiring converting from raw — this was the reason I ditched Final Cut 10 and went with Adobe instead. So perhaps next time you program the way points get the units right? 30 inches elevation rather than 30 meters?
  12. Round Hill Snowkiting NZ

    Might turn out as a no snow no show year for snow kiting. Have not had as much snow this year as last year and the snow line has been much higher this year. Have been keeping an eye on the Round Hill snow cam, not enough snow yet. Any one with eyes on the Old Man Range south of Cromwell? er um cough cough @outlaw ?
  13. Kite foil

    Thanks for sharing @socommk233 , looks like you are getting better at the foiling, woo hoo. I’m hoping for favarouble onshore winds, haven’t been in the water for months (snow season at the moment and mostly offshore winds and brass monkey weather).
  14. Axis aluminum foil

    Looks quite stable. What wind speed? Ya the video was err um cr@#&*&$#@ but some how gets the message across in the end.
  15. Peter Lynn Arc Comprehensive FAQ

    Lubing zips, hm I just cleaned them with fresh water if salt crusted.
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