I had a zipper on my 16m venom 2 give up on me last week. Bloody frustrating, as it was the inflate zipper and I was about to launch ?. The slide was so worn out that it won’t close the teeth anymore.
anyway, I have fitted new waterproof zips to an arc before, but they can be a bit expensive and hard to find. So I thought it was a good chance to test out a Velcro alternative.
its basically just a short sock and Velcro opening similar to the deflates in the flysurfer kites.
the Velcro valves work quite well. I inflated the kite and slowly opened the Velcro. No air was escaping until it opened far enough to for the end of the sock to open.
Sorry, no pictures before they got sewn in. But a few pointers I worked out for anyone wanting to do this mod.
-Make the sock width about 50mm more then the zipper opening in the kite.
- place sticky ripstop inside the kite where the zipper stitching was removed.
- measure from the opening in the kite to the cell wall, subtract 1cm. This is how long the sock needs to be.
-sew the sock in the direction you would use it to inflate the kite (pointing towards the centre)
- sew a deflate valve into the trailing edge to replace the deflate zipper.
Yep, I'm thinking of building a light wind kiteboard. This will be my first attempt at building a kiteboard so I'm trying to keep it simple (and cheap), but also don't want to have to build it again after only a few uses. So I'm after a bit of advice and ideas from those who have gone there before.
the basic plan a broad 1600mm x 500mm. Use a bottom layer of 4mm hardwood ply brace and a top (smaller) layer of 7mm construction ply. Glue them together with epoxy resin. then coat the entire thing in fibreglass and epoxy resin. I'm hoping that the 4mm ply on the bottom will still give a bit of flex on the tips and the 7mm will stiffen in up through the middle. Hopefully it won't weigh a ton either.
some of my questions are...
will it work or just snap in half?
is the size too big? Too long? Too wide?
is normal woven fibreglass ok? Was thinking 1 layer of 200gm.
How should I taper the top layer of ply to the bottom layer so as not to create a stress point? There's a picture below with 2 options of how I was thinking of tapering the ends of the top layer. Which would be better?
obviously there is going to be fins and straps on there somewhere too.