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by GregK
Wed Jan 17, 2018 2:13 am
Forum: Kitesurfing
Topic: Paint for ripstop
Replies: 5
Views: 409

Re: Paint for ripstop

... the fabric. Nylon ... Unless the OP is planning on using uncoated nylon ripstop for the panel patch, inflatable kite canopies are pretty well all made with polyester fibers, because polyester ripstop is stiffer than nylon ( material's modulus of elasticity, polyester compared to nylon ). Not su...
by GregK
Mon Jan 15, 2018 5:40 pm
Forum: Kitesurfing
Topic: Beginner kites with the best safety systems?
Replies: 22
Views: 888

Re: Beginner kites with the best safety systems?

diogovilla wrote:
Mon Jan 15, 2018 5:28 pm
Does any other system has 72cm of travel to sheet in/out?
Yes, the Ocean Rodeo Stickshift bar has 115 cm of bar sheeting travel if the adjustable stopper is set at the very top.
by GregK
Wed Jan 03, 2018 10:31 pm
Forum: Kitesurfing
Topic: Pulleys on kites
Replies: 65
Views: 4170

Re: Pulleys on kites

To make one pullyless kite that ... {performs well ] .... comes down to alot of testing and tweaking and a lot of bridles made tested and thrown away. I'll agree that a pullyless bridle requires more testing, but a prototype pullyless bridle would not be made from fixed-length segments with stitche...
by GregK
Sat Dec 02, 2017 11:48 pm
Forum: Hydrofoil
Topic: America's Cup 2021, the hydrofoil AC75
Replies: 34
Views: 6862

Re: America's Cup 2021, the hydrofoil AC75

More work for the lawyers - anyone notice the comment under the Youtube vid ( actual Youtube page of this vid ) in Chris G's original post ? Comment was made by SBS - Sailing Booster System a week ago, pretty far down the list of comments. There is a Brazilian naval engineer ( Manoel Chaves - http:/...
by GregK
Tue Oct 24, 2017 9:24 am
Forum: Kitesurfing
Topic: Leaks in bladder around valves
Replies: 4
Views: 490

Re: Leaks in bladder around valves

No need to cut the bladder to remove salt crystals. Get a funnel and put a few liters of warm water into the LE or strut bladder ( pinch off the struts if doing a LE ) and gently move the water around. Then drain it out by elevating the tip(s) and make the dump / big inflate / 1-pump valve the lowes...
by GregK
Sat Oct 14, 2017 10:53 pm
Forum: Kitesurfing
Topic: Slingshot 2010 bar unequal line length
Replies: 4
Views: 485

Re: Slingshot 2010 bar unequal line length

Both front lines about 2 cm shorter than steering lines sounds to me like the trim line ( the 5 - 6 mm thick grey line used to trim the power level at the clamcleat on the chicken loop ) is set 4 cm too short. If there isn't enough extra line out at the trim handle on the end of the line to lengthen...
by GregK
Sat Oct 07, 2017 9:18 pm
Forum: Kitesurfing
Topic: How to make a kite
Replies: 103
Views: 5945

Re: How to make a kite

Literally the only thing made by computer is when it cuts fabric... Some stitching steps that are done exactly the same in multiple places, like the reinforcements at bridle attachment points and valves openings are done with a programmable quilting ( X-Y displacement ) table under the sewing machi...
by GregK
Thu Oct 05, 2017 10:27 pm
Forum: Kitesurfing
Topic: heat sealing valves to bladder
Replies: 9
Views: 855

Re: heat sealing valves to bladder

Todd - start up a business selling replacement stick-on valves and you will very quickly understand why they cost what they do.
by GregK
Thu Oct 05, 2017 10:16 pm
Forum: Kitesurfing
Topic: heat sealing valves to bladder
Replies: 9
Views: 855

Re: heat sealing valves to bladder

Todd - as edt posted, almost all kite bladder valves are made from PVC, and the kite bladders thermoplastic urethane. In the kite factories, the valves are thermally welded to the bladder film using RF ( radio frequency - akin to a microwave ) welders, thus very difficult to do without expensive equ...
by GregK
Sun Oct 01, 2017 11:08 pm
Forum: Kitesurfing
Topic: Pics of your fav kiting spot.
Replies: 38
Views: 5847

Re: Pics of your fav kiting spot.

plummet wrote:
Thu Feb 26, 2015 8:32 pm
... spots look horrible. ... no decent waves.
That's because you're looking through Taranaki eyes - you are entirely spoiled.

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