Removing & Adding a Painted Contest ID

And don't worry if you leave small air bubbles. they will go away by
themselves over time.

Tony V.

Pin prick the air bubbles.

wrote:
On Apr 5, 10:55 am, Scott
wrote:

Does anyone have any suggestions on the best way to remove the old
painted contest id from under the wing?

I am planning on having a local sign store make me a template for my
contest ID - SA so I can spray a new ID on under the wing. Anybody
have a suggestion on what type of paint would work best?

Thanks!

Removal- try acetone first. If that doesn't work, sand off with 600
wet.
Plain old Rustoleum works just fine for numbers- or get your sign
store to make numbers instead of template.

In the olden days, we needed contest numbers on the bottom of the wing
so the visual gate system would work. What is the reason for requiring
them now that we don't use a visual gate?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

On Apr 5, 8:40*pm, Eric Greenwell wrote:
wrote:
On Apr 5, 10:55 am, Scott
wrote:

Does anyone have any suggestions on the best way to remove the old
painted contest id from under the wing?

I am planning on having a local sign store make me a template for my
contest ID - SA so I can spray a new ID on under the wing. *Anybody
have a suggestion on what type of paint would work best?

Thanks!

Removal- try acetone first. If that doesn't work, sand off with 600
wet.
Plain old Rustoleum works just fine for numbers- or get your sign
store to make numbers instead of template.

In the olden days, we needed contest numbers on the bottom of the wing
so the visual gate system would work. What is the reason for requiring
them now that we don't use a visual gate?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

It helps at time to know who you are thermalling/cruising under and be
able call them etc.

Darryl

Darryl Ramm wrote:
On Apr 5, 8:40 pm, Eric wrote:

In the olden days, we needed contest numbers on the bottom of the wing
so the visual gate system would work. What is the reason for requiring
them now that we don't use a visual gate?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

It helps at time to know who you are thermalling/cruising under and be
able call them etc.

Yes, it does, and it would be useful for the guy on top to be able to
call the pilot below him, but he can't see any number. If knowing the
call sign is important, there should be a requirement for a number on
top. Failing that, I suspect it's just habit and inertia that leaves the
lower wing contest number in the rules.

--
Eric Greenwell - Washington State, USA (netto to net to email me)

- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl

- "A Guide to Self-launching Sailplane Operation Mar/2004" Much of what you need to know tinyurl.com/yfs7tnz

On Apr 5, 9:15*pm, Eric Greenwell wrote:
If knowing the call sign is important, there should be a requirement for a
number on top. Failing that, I suspect it's just habit and inertia that leaves
the lower wing contest number in the rules.

The primary original reason for contest numbers was visual ID on
starts and finishes. The only contest-relevant reason for them today
is assessing penalties on infractions within line of sight of the CD
(e.g. finish penalties).

IDs are helpful in making traffic calls irrespective of their initial
logic for being. Most of the time these calls are for gliders turning
inside you (belly to you) or abeam of you. An ID on top of the wing
might help on occasion, but in most instances where it would be of
help the higher glider either doesn't have a clear line of sight
(can't look through your own fuselage), or is in a better position to
clear the conflict on its own.

9B

Why not put the ID on the bottom of the fuse?

Mark

Scott Alexander wrote: Anybody
have a suggestion on what type of paint would work best?

Thanks!

Use "Poster Paint" and wash it off after the contest. :-)
...lew...

The primary original reason for contest numbers was visual ID on
starts and finishes. The only contest-relevant reason for them today
is assessing penalties on infractions within line of sight of the CD
(e.g. finish penalties).


I was just remembering several pilots who decided to do a "top gun"
low and fast flyby's during contests, thinking it was funny...well
with the ID number on the bottom, they can't really get away with that
infraction can they? LOL

On Apr 5, 10:55*am, Scott Alexander
wrote:
Does anyone have any suggestions on the best way to remove the old
painted contest id from under the wing?

I am planning on having a local sign store make me a template for my
contest ID - SA so I can spray a new ID on under the wing. *Anybody
have a suggestion on what type of paint would work best?

Thanks!

1. Try solvents ... lacquer thinner then acetone ...
2. sand off with a 1400 grit wet dry (wet) ... . then polish ... and
wax if you are not going to paint new letters ...

I always paint letters using the thinnest coat of lacquer possible.

wait until dry ... then sand the edges of the letters until there is
no transition ... the edge may get a little wavy, but this is really
no problem for readability.

BTW, if your letters trip the BL on a four foot wide section of the
wing bottom ... a few inches from the LE ... you are incurring a
reasonable performance loss on that section of wing ... i.e. the
bottom of the wing has attached flow almost to the trailing edge on
newer ships ... and ~ 80% on older designs.

So, will your new x-mil vinyl letters actually do this ... in theory
yes - in actuality, I don''t know ... but why take the chance ...
painting is very easy ... relatively fast ... and much cheaper ...
IMHO ...

KK