Clear Yaw string tape?

In article , Tony Verhulst
writes

I've always felt (but have no evidence) that positioning a yaw string on
the canopy is not optimal, and that you really want it in clean,
undisturbed, air (yeah, like the 2-33). There could be 2 problems with
the canopy mount. One, it is flush with a compound curve surface and who
knows that the air is doing there. Two, it is in the boundary layer
between the canopy surface and the airflow and who knows that the air is
doing there.

I wonder if any one has experimented with a "normally" mounted yaw
string and one placed on a post several cm higher.

Tony V.

There used to be a burble round the canopy on my sailplane,
which meant there was only a narrow speed range where the yaw string was
anything like stable.

I wanted to update the TE system from a diaphragm type to a
Braunsweig tube. It occurred to me that if I put the tube immediately
ahead of the canopy I could kill two birds with one stone. Worked a
treat!

I thought maybe I could use the tube as a radio antenna, too, (3
birds?) but never got around to trying it.
--
Mike Lindsay

On Wednesday, April 12, 2006 11:49:30 PM UTC-7, bumper wrote:
Though I haven't really advertised it, a number of years back I invented the
MKII "high tech" yaw string. The high tech part being somewhat
tongue-in-cheek, though generally unreliable and refutable sources indicate
the MKII will add at least 2 points to your L/D - - and even if not, it
still looks a whole lot better than tape! I've sold 70 - 100 MKII's, mostly
to other Stemme owners and a few on the ramp at Minden . . . so perhaps
someone will post their opinion.

The MKII consists of a clear turbulator base w/ clear adhesive. Yarn is
natural wool, as that's reputed to be kinder to the Plexi than synthetic
yarn that scratches. The yarn exits through a small hole in the plastic
base. Included is an index dot for the inside of the canopy, instructions
and a money back guarantee if you're not happy.

Several MKII's were placed on a test strip of Plexiglas and continuously
exposed for over two years in the California sun. After the exposure test,
the base and adhesive could still be easily removed with no damage or
residue. To order, send $9 USD and a self-addressed, stamped envelope to:

John Morgan
194 Taylor Creek Rd.
Minden, NV 89460

I also should have a "quiet vent" kit (QV) available soon. Added to the
standard swing out vent in the canopy sliding window, testing shows a noise
reduction of 10 db - - it quiets the vent to a pleasant, low level. I'm
still working to resolve some issues with a few QV failures while wave
flying, if the QV is mechanically stressed while exposed to sub-zero
temperatures. If you don't "pluck" at the QV while it's super cold, it works
fine as is. When ready for "market", it will be $5 US.

all the best,

bumper



"Bruno" wrote in message
ups.com...
I have seen a few gliders that had yaw strings attached with something
other than the white tape most of us use. It was either a clear tape
or clear sticker. If any of you use something other than the white
tape to attach your yaw string please share what you use. Thanks!

Try a Donut Shop that sells donut holes; they will
have a membership in the Society for Hole Sellers and
will probably allow you to use their directory.


At 20:24 13 April 2006, John Wilton wrote:
Are you looking for the EASA approved ones or the traditional
ones ?


'Phil Jeffery' wrote in message
...
Does anyone know who still supplies these canopy holes?

'Nyal Williams' wrote in
message ...
I have seen a glider that had a very small, round hole
for the yaw string drilled in the canopy. The owner
tied knots inside and out, tighly against the hole.

That was probably 35 years ago and I don't remember
what or who. I would not recommend it.

Nyal Williams wrote:
Try a Donut Shop that sells donut holes....

A bit off topic but...
Years ago I had been told about a Florida company that put holes in
sheet metal. It seems that after years of being in business, they had
quite an inventory of improperly sized holes that they had not been
able to install in the sheet metal. They had to get rid of them, so
they flushed them down the storm drain. And, of course, they collected
in the groundwater, in bunches. After some time, they displaced enough
limestone that those giant sinkholes formed and the ground collapsed
where the bad holes had collected.

Just passing it along. Hope it helps.

Technical description of a pipe, "long hole wrapped in metal".

wrote in message
oups.com...
Nyal Williams wrote:
Try a Donut Shop that sells donut holes....

A bit off topic but...
Years ago I had been told about a Florida company that put holes in
sheet metal. It seems that after years of being in business, they had
quite an inventory of improperly sized holes that they had not been
able to install in the sheet metal. They had to get rid of them, so
they flushed them down the storm drain. And, of course, they collected
in the groundwater, in bunches. After some time, they displaced enough
limestone that those giant sinkholes formed and the ground collapsed
where the bad holes had collected.

Just passing it along. Hope it helps.

Technical description of helicopter, "A mass of fatigued metal, rotating
around an oil leak".

"Paul Remde" wrote in message
news:S_E%f.97228$oL.21601@attbi_s71...
Technical description of a pipe, "long hole wrapped in metal".

wrote in message
oups.com...
Nyal Williams wrote:
Try a Donut Shop that sells donut holes....

A bit off topic but...
Years ago I had been told about a Florida company that put holes in
sheet metal. It seems that after years of being in business, they had
quite an inventory of improperly sized holes that they had not been
able to install in the sheet metal. They had to get rid of them, so
they flushed them down the storm drain. And, of course, they collected
in the groundwater, in bunches. After some time, they displaced enough
limestone that those giant sinkholes formed and the ground collapsed
where the bad holes had collected.

Just passing it along. Hope it helps.

On Wednesday, April 12, 2006 9:57:34 AM UTC-7, Bruno wrote:
I have seen a few gliders that had yaw strings attached with something
other than the white tape most of us use. It was either a clear tape
or clear sticker. If any of you use something other than the white
tape to attach your yaw string please share what you use. Thanks!

Personally, I just WON'T use anything other than Bumper's setup. The money is trivial, and it doesn't UGLY UP your glider. Speaking of which, I need to order some ASAP for gifts.
The white tape, duct tape, or any other tape option will ALWAYS leave residue that always look like crap.
Off my soapbox now.

BTW, Other things on my 'acquisition' list: the wide graphic of a nose-on glider that looks so nice on the back of the truck. The XCSoar graphic that one might put ON the glider.
If I can arrange to get this stuff with a phone call, that's good, because anything requiring much more than talking seems to be slipping beyond my capability. emailing me directly to somehow set up a clandestine phone conversation might work. , or the ever-so-imaginative will work.
TIA
Sorry to be such a PITA, but my hardware is failing.

On Monday, August 26, 2013 6:04:55 PM UTC-7, Uncle Fuzzy wrote:


Personally, I just WON'T use anything other than Bumper's setup. The money is trivial, and it doesn't UGLY UP your glider. Speaking of which, I need to order some ASAP for gifts.

The white tape, duct tape, or any other tape option will ALWAYS leave residue that always look like crap.

Off my soapbox now.



BTW, Other things on my 'acquisition' list: the wide graphic of a nose-on glider that looks so nice on the back of the truck. The XCSoar graphic that one might put ON the glider.

Sorry to be such a PITA, but my hardware is failing.

Uncle Fuzzy,

SoaringNV (775 782-9595) has really nice glider decals for sale. Not sure if they'll ship, but worth checking. They've been closed for the last few days while they finish burning California and quit sending us all the smoke.

Thank you for the ringing endorsement of the MKIV "high tech" Yaw String!

It's available from Cumulus Soaring, SoaringNV, and Williams Soaring Center, and from me direct.

BTW, this thread is from 2006! (or was)

best,

bumper

I have had very satisfactory service from my MK3 and MK4 yaw strings.
Nice clear adhesive patch that can be removed from the canopy without leaving a mark. Very satisfying triangular shape to the adhesive patch gives me a very warm feeling inside whenever I examine it during flight.

Also, very excellent customer service. One time at Minden I was having some questions about the length and responsiveness of the fibrous indicating structure and the company representative drove up to my plane and addressed my concerns in less than one hour from the telephone call.

On Tuesday, August 27, 2013 9:54:28 AM UTC-4, wrote:
I have had very satisfactory service from my MK3 and MK4 yaw strings.

Nice clear adhesive patch that can be removed from the canopy without leaving a mark. Very satisfying triangular shape to the adhesive patch gives me a very warm feeling inside whenever I examine it during flight.



Also, very excellent customer service. One time at Minden I was having some questions about the length and responsiveness of the fibrous indicating structure and the company representative drove up to my plane and addressed my concerns in less than one hour from the telephone call.

My understanding is that clear yaw string tape can only be safely used with clear yaw strings
QT