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Messages - PonoBill

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1
Random / Geek Thrills
« on: October 18, 2019, 09:34:10 PM »
After a frustrating day of chasing wind to no effect, I came home and got a whole bunch of previously recalcitrant geek toys working in concert. Lose a few, win a few.

This will be the main monitor/control panel for the dashboard of my 1978 GMC MoHo project. It's both a dinky HD monitor and a touchscreen. Of course, there will be lots of other gauges and switches, but most everything will also be monitored and controlled wirelessly here--and to any other device connected to the moho's router. So cute. The Raspberry Pi that acts as the MQQT broker for all the signals going everywhere screws onto the back





Of course the project has a way to go, but I have multiple slave boards (ESP8266's) talking to the server simultaneous and behaving. Any geek with less rusty UNIX and C++ skills would have had an easier time of it, but I'm getting there, and it's coming back, one pounding headache at a time. I'll have a fraction of the point-to-point wiring that was originally present. Does this make sense? Hell no. But it's fun and the end result will be very cool.


2
Wow, Fiona won the women's race with a solid two minute margin.

Whoops, and now the Women's race results have disappeared. Weird.

3
Foil SUP / Re: Yet another diy wing
« on: October 18, 2019, 10:14:42 AM »
While my Geezerfoil experience left a certain distrust for theoretical vs. practical, I've been browsing airfoils commonly used for hydrofoils and came across the Eppler817. The characteristics look ideal for our low speed, wide range applications, especially given the big variations we use in angle of attack. Most hydrofoil watercraft don't pitch as much. I've never seen an airfoil like this in use. Could be worth a try.

http://airfoiltools.com/airfoil/details?airfoil=e817-il

4
SUP Gear Reviews / Newly Acquired / On Order / Re: Wing pump alternative
« on: October 17, 2019, 02:23:37 PM »
Nice, but no pressure gauge. Do you just guess or did you do a gauge on the connector? I find my guess is not good enough, especially for the F-one.

5
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Hand Kite
« on: October 17, 2019, 02:19:18 PM »
Me too, preferably traditional Buffalo style, but I like them extra crispy. Now I'm hungry.

6
Downwind and Racing / Re: Jeremy "Maverick" Riggs - love this video
« on: October 17, 2019, 12:56:47 PM »
Very cool, and a smoking southside run. That looked like Randy Royce at the beginning of the video, which would mean he's doing a hell of a lot better on downwinds than last year.

7
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Hand Kite
« on: October 17, 2019, 12:49:59 PM »
Yeah, I like free wing, and it's descriptive enough to work. No mast, no strings=free wing. Hand Wing sounds like an adolescent sex act.

8
Foil SUP / Re: Yet another diy wing
« on: October 17, 2019, 07:28:45 AM »
Nice looking wing. I was aiming for a similar set of dihedral/anhedral changes in the fatboy wing. Somehow I didn't quite go as far as I wanted, but it's in the ballpark.

Wetstuff--I doubt any current builder making foil wings is paying attention to reynolds numbers. At best they might go to airfoiltools.com and plug in their foil measurements, but beyond that it's cut and try.

In my own case, the only time I tried to use foil calculations was when I designed the geezer foil, and I was off by a factor of four.

9
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Hand Kite
« on: October 16, 2019, 07:56:28 PM »
Call it what it is, wingsail
Not a sail. So... ...no sale.

I like wind wing, though it seems a little off. The windsurfers on foils call their sport windfoiling. If we use wind wings on foils will that be wind wing foiling? I feel my inner Elmer Fudd trying to take over.

10
Foil SUP / Re: What’s the deal with pumping?
« on: October 16, 2019, 12:54:22 PM »
As has been said many times, "pumping' is more a matter of un-weighting your board and gliding it back down.  Un-weight---Glide---Un-weight---Glide...…..     As you hop up the board is un-weighted, and rises with your feet.   

Absolutely. I should have made it more clear that bending your knees is so you can unweight, which is the critical bit of pumping. For a while, I was trying to pump fairly straight-legged, which young, springy kids seem to get away with. If you pump by pulling your feet up you have to bend your knees--a lot.

11
Foil SUP / Re: What’s the deal with pumping?
« on: October 16, 2019, 09:40:27 AM »
Yes, the GL 240 is pretty easy to pump, and so are all the Axis wings. I'm 72 and 235# riding a board 6'11" long so yeah, I suck at pumping. But the three things I've found that help me a bit are:

Don't worry too much about coordinating your pump, meaning don't try too hard to get your front foot to come up before the back on the up motion. You can literally jump up and down if the wing is right and the wing will take care of the pumping action. For a high aspect wing, the easiest way for the wing to rise in the water is for it to angle up which means the front of the board comes up before the back. Works the same way going down. A low aspect wing with a big stabilizer will resist angling upwards and will come up flat. Nothing much happens when it does that.

Bend your knees a lot more than you think you need to. Yeah, the fifteen-year-old kids don't. You aren't them. Chances are when you think you're bending your knees no one else can tell. Certainly true in my case. If I want any success at all in pumping I need to bend the heck out of my knees.

Get your body into it. It's not pushing with your legs, it's hopping up and down. Look at the videos of Steamroller doing it. Clinton is built like a fireplug, certainly weighs over 200 pounds, and has fake knees. Ignore the videos of skinny kids, Clinton is the model for geezers. Of course, he's a lifelong aggressive skateboarder so a lot of it comes naturally, but when I need inspiration that's where I go. Unfortunately, most videos of Steamroller are from his point of view. But I learned to pump better (better meaning I still suck but it's a little less) by watching him.

12
It might be okay except for the clip. An easy point of failure and an unnecessary complication for our use.


13
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: F-One Swing
« on: October 16, 2019, 09:16:29 AM »
I'm glad things came out well for you.

14
Wingsurfing, Windfoiling, Wingfoiling, Wing SUP / Re: Hand Kite
« on: October 16, 2019, 09:13:25 AM »
FRP ...has it.  WingWing. 

"Hewwo?"

15
I was talking to Fiona about this a few days ago. I wanted to try my new fatboy foil wing, so even though the wind sucked and it was nasty cold and grey I rigged and suited up to go out at Jensen. There was no one else around. While I was dragging all my windfoil crap down to the water Fiona showed up with the board she's using (sheesh, it's skinny) all suited up with an impact vest under her wetsuit. She wanted to make sure it wasn't going to shift around, so while I was dragging my butt slowly across the river I saw her paddle out and then climb up on the pylons near the event center and jump off to see how it held up. It's about a 15 foot drop. She seemed satisfied.

She seemed excited, but also a bit more serious than she usually is. Tough race. Tough kid.

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