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by bragnouff
Wed Jul 28, 2021 9:15 pm
Forum: Kitesurfing
Topic: The physics of kiteboarding
Replies: 13
Views: 1013

Re: The physics of kiteboarding

Shame to put all those efforts into writing that paper, and self-sabotage it with the Comic Sans MS font...
by bragnouff
Wed Jul 28, 2021 3:11 am
Forum: Hydrofoil
Topic: Please help to unscrew foil mast
Replies: 22
Views: 1068

Re: Please help to unscrew foil mast

Was that sarcasm??? You say that a little heat goes a long way, yet in the video you link to support your claim he's quite happily getting that aluminium mast "extremely hot". That wouldn't go too well on epoxy / carbon. And he actually says in the video that it would melt it... Aluminium is also po...
by bragnouff
Wed Jul 28, 2021 2:26 am
Forum: Kitesurfing
Topic: Fake Counterfeit Tennis Raquets
Replies: 10
Views: 765

Re: Fake Counterfeit Tennis Raquets

It's not unusual on AliExpress or AliBaba for the sellers to use photos of other products to push their own shit. Using "Cabrinha Switchblade" in the description is next level though... Here's one example amongst many others: using a HB Flair 4.0 to illustrate their knockoff wing. Pretty sure the HB...
by bragnouff
Tue Jul 27, 2021 6:34 am
Forum: Hydrofoil
Topic: Please help to unscrew foil mast
Replies: 22
Views: 1068

Re: Please help to unscrew foil mast

Also in the future use A4 grade stainless steel hardware. A2 doesn't really do the job in marine environment.

To get it out, if you cannot find that extractor drill bit, you could drill it out with normal drill bit. Take your time, spray some lube as you go, and cool it down frequently.
by bragnouff
Mon Jul 26, 2021 7:14 am
Forum: Hydrofoil
Topic: Aluminium vs Carbon Mast - Cost vs Benefit
Replies: 99
Views: 7534

Re: Aluminium vs Carbon Mast - Cost vs Benefit

Why care about 1/4 or 1/2lb when the guy on top is 200lb? It comes down to the concept of unsprung mass. And it does make a noticeable difference in terms of feel and reactivity. See your legs as the spring/shock absorbers that deal with the body weight (sprung mass). A foil that floats is also a p...
by bragnouff
Mon Jul 19, 2021 9:57 pm
Forum: Kitesurfing
Topic: What causes jellyfishing?
Replies: 15
Views: 918

Re: What causes jellyfishing?

yeah, well... any severely underinflated kite will jellyfish. Leading edge buckling is something that you can kind of control, avoid loading it too much and violently depowering it, whereas tips flaring in and out are more of a constant hassle, rocking back and forth in the window. The GK Sonic, whi...
by bragnouff
Mon Jul 19, 2021 12:03 pm
Forum: Kitesurfing
Topic: What causes jellyfishing?
Replies: 15
Views: 918

Re: What causes jellyfishing?

Could be because it's leaking pressure from a valve that starts peeling off. Affects most kites after 10yrs. If it's still properly inflated, could it be that you're loading it more? Do you ride more powered than before? Riding in stronger winds, but relying more on depower would do that. Or did you...
by bragnouff
Thu Jul 15, 2021 10:35 pm
Forum: Hydrofoil
Topic: Ultimate foil for surf skate like quick carves?
Replies: 43
Views: 3704

Re: Ultimate foil for surf skate like quick carves?

https://vimeo.com/224503102 I agree that the Spitfire XLW is a good contender for surf/skate. XLW with a 75cm mast is lots of fun. It's just a tad heavy and all that momentum comes in the way of reactivity. I'd really love to try a light version of it. Lighter fuse and foam cored wings would be awe...
by bragnouff
Sat Jul 10, 2021 4:54 am
Forum: Kitesurfing
Topic: variable stopper options
Replies: 6
Views: 494

Re: variable stopper options

Depends if you want to adjust its position while riding or if you just want to limit the throw of the bar to your max reachable height, but back in 2006, there was a pretty elegant stopper design on the GK Sonic bars. The center line was essentially a long single depower line made out of 6mm or 8mm ...
by bragnouff
Tue Jul 06, 2021 11:10 am
Forum: Kitesurfing
Topic: Best bar system and why
Replies: 41
Views: 2896

Re: Best bar system and why

what the heck happened to stopper balls?!?!? Someone needs to bring back the stopper ball. +1 I know of only 4 brands still offering them on their bars. Duotone, Slingshot, Ocean Rodeo, & Epic The Cabrinha bars have a "hidden" stopper as well. The front lines consist of two parts (8 m + 14 m). Reas...

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