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by tegirinenashi
Sat Jan 06, 2018 10:27 pm
Forum: Kitesurfing
Topic: quiz for armchair kite designers
Replies: 10
Views: 935

Re: quiz for armchair kite designers

Yes, the 50/50 is first approximation only. However, it can be argued that if you designed a bridle with say 90/10 tension split ratio at some junction, then it would be poor design, and the weaker loaded line can be eliminated altogether without affecting performance too much. Also, I would be very...
by tegirinenashi
Fri Jan 05, 2018 8:43 pm
Forum: Kitesurfing
Topic: quiz for armchair kite designers
Replies: 10
Views: 935

Re: quiz for armchair kite designers

On the bridles, I am not clear what your point it. t is all about where the load is, like you mention, and certainly different models have different advantages and disadvantages. I doubt many here will intuitively understand the difference. At the end of the day it is just moving point of effort ba...
by tegirinenashi
Fri Jan 05, 2018 7:20 pm
Forum: Kitesurfing
Topic: quiz for armchair kite designers
Replies: 10
Views: 935

Re: quiz for armchair kite designers

Answers: 1. Kite would be unstable to the point that it would have to be actively steered with significant amount of bar pressure. For example, when kite is in neutral at 12 o'clock with bar released would be not staying that way, starting slowly to roll, and move to the side, and will accelerate do...
by tegirinenashi
Tue Jan 02, 2018 11:14 pm
Forum: Kitesurfing
Topic: quiz for armchair kite designers
Replies: 10
Views: 935

quiz for armchair kite designers

Question #1: How about the "ultimate pulley" above the depower strap bar1.png The advantage is that center lines are always balanced. Can you think of a single disadvantage that would invalidate this design? Bonus point: design a single line safety system for it (therefore, the answer does NOT conce...
by tegirinenashi
Fri Dec 22, 2017 2:38 am
Forum: Kitesurfing
Topic: Are Switch kites getting any better?
Replies: 439
Views: 43002

Re: Are Switch kites getting any better?

Thank you for posting actual data, Bill, it is not something we see very often here on this forum. Also, you were not afraid to be honest about Switch kite weights, even though this is not the area where Switch excels. You are right, as I'm interested in smaller sized Heliums, the west coast demo ev...
by tegirinenashi
Fri Dec 22, 2017 1:32 am
Forum: Kitesurfing
Topic: Are Switch kites getting any better?
Replies: 439
Views: 43002

Re: Are Switch kites getting any better?

Let me get this straight, the suboptimal airfoil profile hasn't been noticed until version 5? For example, when they were upgraded version 4 to 5 it was not a priority at all? I can't possibly believe it. There is no 'optimal' airfoil. It depends on your design intentions. Shapes get changed all th...
by tegirinenashi
Fri Dec 22, 2017 12:09 am
Forum: Kitesurfing
Topic: Are Switch kites getting any better?
Replies: 439
Views: 43002

Re: Are Switch kites getting any better?

Let me get this straight, the suboptimal airfoil profile hasn't been noticed until version 5? For example, when they were upgraded version 4 to 5 it was not a priority at all? I can't possibly believe it.
by tegirinenashi
Thu Dec 21, 2017 11:49 pm
Forum: Kitesurfing
Topic: Are Switch kites getting any better?
Replies: 439
Views: 43002

Re: Are Switch kites getting any better?

Once again, Switch publishes the kite technical sheet. Here is the data for v5: Nitro5.png And here is the one for v6: nitro6.png So "the extensive redesign for v6" didn't change a single number? Not even at second place after decimal point? Yes, I see that airfoil reprofiling won't affect these num...
by tegirinenashi
Thu Dec 21, 2017 6:52 pm
Forum: Kitesurfing
Topic: Kiteboards: Carbon Vs Wood
Replies: 35
Views: 2250

Re: Kiteboards: Carbon Vs Wood

Stay tuned for next episode: "Carbon vs. Epoxy".

Seriously, winter is so boring here that I'd appreciate any video. Here is an idea for construction/technical video: how make a HF flex/torsion measurement rig.
by tegirinenashi
Thu Dec 21, 2017 6:04 pm
Forum: Kitesurfing
Topic: Are Switch kites getting any better?
Replies: 439
Views: 43002

Re: Are Switch kites getting any better?

...I was happy with the performance of the Nitro 5. Then the Nitro 6 came along so I got the Nitro 6 and wow that kite for me is magic, its lighter in the air (Like the Edge) although not quite as light... Your message demonstrates how much perception is in the eye of beholder. Neither the kite lay...

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