On Wednesday, July 24, 2013 1:38:31 PM UTC-5, vontresc wrote:
"Dan Marotta" wrote:

...Not that it'll make *me* fly any farther or faster.



BTW, my probe is turned up.





wrote in message

...

On Wednesday, July 24, 2013 7:13:23 AM UTC-4, Piotr Jaszczuk wrote:

Hi all, I've been checking recently different online shops to see what

tail fin mounted TE probe I can get. All manufacturers have probes in

more less two different lengths, 80-90 cm and 55 cm. And now I'm

wondering if it's worth spending around 30 Euro more to get the longer

one, what difference it makes, anyone can explain that to me and maybe

direct me to a shop in Europe that can supply reasonably priced one? regards Piotr



Getting the sensing point further away from the tail surfaces provides

more reliable and consistent results. Simply turning the probe up instead

of down also helps with the shed off of the wing roots.

Longer is usually better.

UH



You should ask Herb Killian about the merits of an upturned TE probe :-)



Pete

OK, here's the story: was flying from Ridge Soaring PA in my LS4 (over 20 years ago) and had nothing but a flimsy plastic bag when the time came and I had to go. After filling the bag up, I tied a knot and used the trash disposal chute that is part of the canopy. Immediately, the glider started with the stick shaker that I didn't even know I had. There was obviously something wrong at tail end. Slow or fast flight, the stick had a distinct movement. I called back that something was wrong with my glider and had a good group of people waiting for me when I landed. They pointed at my tail, laughing and back-slapping. When I got out I noticed my plastic bag hanging from the TE probe, nicely centered and still full of what I had put in.
Since then I firmly believe that in an infinite universe everything imaginable will happen somewhere, someplace. I could repeat that bag-toss for a million years and not get it to stick on the probe again!

Herb, J7