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Messages - PonoBill

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1
The Shape Shack / Re: How to fix delamination bubble?
« on: Today at 07:48:12 AM »
Yes, it's sandwich construction for the deck which means a layer of glass, a layer of PVC or other material, and then another layer of composite. Given the small area and the fact that you probably don't stand there you can perhaps get away with fudging, but don't go too far. Plywood is very stiff compared to PVC and will create a stress point if you do step on it which can crack the edges of the repair. You're going to have to either spend a bit of money on supplies or go to a pro, and this won't be a cheap repair. A pro would use the same materials that were originally there. If you're going to do the repair yourself you could do the same. I'd guess you're looking at $200-300 for pro work, so you could spend the same amount of materials and still be ahead because your don't have to wait, drive 200 miles, and you'll learn a useful skill.

But if you want to use what you've got, which is certainly e-glass, then at least get some PVC to replace what's gone. You can get 1/4 sheets of divinycell at https://shop.fiberglasssupply.com/Core_Materials-Divinycell_Foam_Core.html for about 30 bucks, but you can call them and ask about off-cuts for a lot less. The biggest cost will be shipping, so if you get a size that they can slip into a FedEx envelope you're gold. Just make sure you get the right thickness. Stick it down to the existing base glass with epoxy.

I would exactly duplicate the existing construction. There's probably a sanding layer of glass on top of the carbon that you aren't seeing. My work looks super sloppy because I never bother with cosmetics, but I do pay attention to stress and original strength. You've got a very nice board. Keep it that way.

The water is what causes the delam--not your fault. But make sure everything is super dry. You can get small chunks of carbon on eBay for less than 20 bucks for more than you need.

2
Palm up? I can't do anything palm up. I've tried, it just feels clumsy to me.

3
The Shape Shack / Re: How to fix delamination bubble?
« on: July 15, 2020, 09:43:11 PM »
I agree with what Tall and Cowperson are saying except E-glass. I've used my last piece of e-glass. Is it the price guys? fiberglass is cheap, and S is better in every way. And since I've got lots of carbon kicking around I'd do one layer of carbon, one of S-glass. Whatever you do for the first layer, paint the area with epoxy first and scrape it so you shove epoxy into the surface. Then I'd prewet the carbon on the table, set the patch on and roll the shit out of it with a bubble roller to get it well incorporated. Lay on one or two layers of prewet glass, let it kick. Sand very lightly and put your deck pad on.

Also, instead of "cutting" I'd sand the bubble away until all the delammed glass is gone. It's easy to extend the delamination with any kind of prying force. You don't want that to happen. And sanding until you get to solid lam will give a nice feathered edge if you're careful.

It probably wasn't just the sun that did the damage, you probably had some water in there.

4
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Axis Foils
« on: July 15, 2020, 09:35:23 PM »
The 460 looks like a pretty weird design. I think it's for flat out speed and probably doesn't help much with turning. I'd probably go with either a 440 or a 370 and probably shim them to 3 degrees or less.

5
There were a few port people looking around at the Event Center today. I kept hearing the words "unacceptable". I think we're headed for closure. I think they could trim the crowd a bit by making the parking lot open to yearly passes only (says the guy with the yearly pass) though there would be a lot of PDX people who think a hundred bucks for parking is a deal. That's like one day of parking in downtown Seattle. Today was kind of nutty. Heavy crowd for the weekend. I was having a fine time on my 4.2 with my 101 foil, which I have finally learned to turn. Thanks, Thatspec, for making me realize that it might just be me that's the problem. It was.

Phils, looking at the Cloud wings I think their 2.2 is going to feel a lot like a 3.0. It might be exactly the opposite problem--not a big enough step. As Thatspec says, either go a little East or get more comfortable feathering the wing over your head. It's a fun way to fly anyway--overpowered and feathering.

6
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Axis Foils
« on: July 15, 2020, 05:44:48 PM »
You might want to measure the incidence angle of the two stabilizers. Most manufacturers are cranking in some angle. Cranking it back out can dramatically change how wing sets perform. A plus incidence angle (rear edge of the tail lifted) applies force to increase the angle of attack of the main wing which increases lift of wings, especially those with a higher foil coefficient. It also increases drag. I can't say this is bad, it makes the wing easier to lift and firms up pitch control. But it's not the route to higher speed, and it takes more front leg pressure to keep the wing trimmed. Measuring the Axis 440 tail yields a little over 5.2 degrees positive incidence angle. The 101 is fairly slow with this tail. Shimming it to reduce the incidence to 3 degrees makes the 101 come alive. Apparently the 390 has a zero incidence--at least that's what Admin told me. I haven't measured it. As soon as I finish making my new incidence meter I'll be playing with all my Axis wing/tail combinations. I ordered a model airplane incidence angle gauge, but it's not here yet and it looks a little rickety. I have a good gyroscopic angle gauge that I'm mounting to a sliding clamp that should give good repeatable results. I just need to stop foiling and finish making it.

I know you know all this DW, but others probably don't.

7
Foil SUP / Re: Go Foil : Axis : Armstrong : Signature : Cloud IX: ??
« on: July 15, 2020, 08:57:57 AM »
Kane is super irritating--first person I ever saw doing a beach start, and for a long time the only person I saw doing them regularly. I eventually realized he's doing a completely different sport than I am, and I just watch in awe.

8
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Axis Foils
« on: July 15, 2020, 08:51:31 AM »
Axis is shipping me everything but the mast and 900 wing. I think you bought them out of everything. Two weeks on the 900 wing, three MONTHS on the carbon mast. You bastard.

9
Random / Re: Superstrata Bike
« on: July 15, 2020, 08:45:17 AM »
Very slick. Fabulous tech, the latest Carbon fiber 3D printers are amazing. Not only can they lay down the carbon, they can set the direction and length of every strand of tow. In a standard cloth layup the direction of the bulk of the fibers means they don't contribute to overall strength--even uni runs into all sorts of limitations.

Here's a long but fascinating video on standard carbon bike construction. A beautiful design, but watching it you can easily see how little of the carbon actually does what the designer wants.

https://www.youtube.com/watch?v=UWSePEV88tw

10
I think I could do that, I've foiled all the way across the river on my knees. The big problem for me would be getting down there and getting back up. A few months of Yoga and maybe I could do it once.

11
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: BRM Wings
« on: July 15, 2020, 08:34:20 AM »
That leading edge is huge. It could explain why the wind develops so much power for it's size, but it seems like it wouldn't depower as well as a wing with a smaller leading edge.

12
Kite Foiling / Re: Fred Hope
« on: July 15, 2020, 08:31:03 AM »
He's amazing. A few days ago he cut two circles around me while I was mowing across and then came extremely close to me while I was in the middle of a jibe. I was irritated at first but then I realized he has better control foiling than I do walking. I'm just another stationary object. And it was fun to experience.

Perhaps also a bit of a compliment. I don't think he would have done that back in the days when I was flailing unpredictably.

13
It works, there are a few people around doing it, I've tried it--I have the perfect board for it, my ancient Starboard 12'2" X 26" not only has straight rails and not a lot of rocker, it also has a spot for a dagger fin in the middle because it was designed from the start to double as a windsurfer. Regular windsurf boards also work, though not as well as you might hope. I stuck a dinky fin in it and it pulled upwind like a champ almost as fast and good on reaches as a foil. If he's willing to do that to a board--even just an FCS box and 2" fin help tremendously--then he won't just wind up doing the walk of shame every run. When I didn't have a big enough wing to try anything else on lighter days, I did it a few times and it was fun--you can catch about anything and surf it, from dinky baby waves to oh shit, that's a big one. You'd wind up with the same kind of feeling of invulnerability as windsurf wave riding because you can outrun almost anything when things start going bad. But once I started having success with the foil I never used it again. Might be fun to break it out next time I'm in Maui. I think I'm far enough into foiling so surfing won't screw me up. It did at first--I'd pearl surfing and fall all over myself foiling.

On issue to deal with--two leashes. If you're getting worked in big stuff having one leash on your ankle pulling east, and one on the wrist pulling west, the thing in the middle (you) is not happy. A waist leash is better and in larger surf I'd make sure the belt was really strong and attach both leashes to it. Trust me on this one.

14
  Keep at it, and donít give up and just plow the fields!

Not going to happen. Mowing is more fun than anyone could expect, but I want it all.

15
Foil SUP / Re: Go Foil : Axis : Armstrong : Signature : Cloud IX: ??
« on: July 14, 2020, 11:34:43 PM »
I think the 1150 is going to suck toads for winging. I could be wrong, but it seems like it will turn even worse than the 1010--which takes a fair amount of effort to turn. The longer a high aspect wing is, the weirder it will be in a turn. If the turn is tight enough the wingtip on the inside of the turn is barely moving and the one on the outside is going fast. They don't really bank, they just roll on their side. My turns on the 1010 are so slow I probably look like I was planning on downwinding and changed my mind.
Bill all due respect hope your wrong as Iím already $800 in the hole on the 1150 waiting for it arrive to compliment my 1020 for a bit more speed and higher end range,not sure what I was thinking really as you know Iím not the biggest fan of HA wings but all Iíve tried are the GF GL series and maybe with some stroke of luck I might like the Axisís HA version,now you got me thinking about the 1000 Lol

I could very well be totally wrong. I had a very good afternoon on my 1010. I finally figured out how to turn it. You have to turn it like you mean it and stay in it. Ignore the wing during the turn and twist the board into the turn instead of trying to gentle it through. I just started doing some extreme zig-zags, trying to get a better feel for it, and on one of my zigs, I pushed it really hard while I was pretty high up and it did a pretty credible 180. I immediatly fell, of course, but it started the experimentation.

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