A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Soaring
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Old Contest Letters



 
 
Thread Tools Display Modes
  #1  
Old December 19th 03, 08:38 PM
Mark Wright
external usenet poster
 
Posts: n/a
Default

At 15:36 19 December 2003, Jj Sinclair wrote:
OR use *stick-on* numbers this time.

Don't stick them on the wings! They really F**K the
performance up . Trust me, Been there , Done that.



  #2  
Old December 19th 03, 08:46 PM
Marc Ramsey
external usenet poster
 
Posts: n/a
Default

Mark Wright wrote:
Don't stick them on the wings! They really F**K the
performance up . Trust me, Been there , Done that.


How did you determine this?
  #3  
Old December 20th 03, 12:17 AM
BTIZ
external usenet poster
 
Posts: n/a
Default

must have come off in flight? or at least lifted a leading edge..

not stuck on right?

BT

"Marc Ramsey" wrote in message
. ..
Mark Wright wrote:
Don't stick them on the wings! They really F**K the
performance up . Trust me, Been there , Done that.


How did you determine this?



  #4  
Old December 20th 03, 02:17 AM
Tim Ward
external usenet poster
 
Posts: n/a
Default


"BTIZ" wrote in message
news:KyMEb.30176$m83.14271@fed1read01...
must have come off in flight? or at least lifted a leading edge..

not stuck on right?

BT

"Marc Ramsey" wrote in message
. ..
Mark Wright wrote:
Don't stick them on the wings! They really F**K the
performance up . Trust me, Been there , Done that.


How did you determine this?



You might want to take a look at:
http://www.ssa.org/Johnson/90-1998-05.pdf

It's about an SZD-55, but there's a discussion in it on the effects of vinyl
contest numbers.

Tim Ward


  #5  
Old December 23rd 03, 05:01 PM
Simon Waddell
external usenet poster
 
Posts: n/a
Default

I'm having mylar seals fitted to my glider over winter. I elected to have
them stuck on the wing rather than rebated into it (partly for cost, partly
because you can't undo a rebate) and they are thicker than vinyl letters,
but set much further back.

Anybody got any experience on the impact of mylar seals on wing performance
and whether it's important to rebate them. Is it more important for the
upper surface rather than the lower?


"Mark Wright" wrote in message
...
At 15:36 19 December 2003, Jj Sinclair wrote:
OR use *stick-on* numbers this time.

Don't stick them on the wings! They really F**K the
performance up . Trust me, Been there , Done that.





  #6  
Old December 24th 03, 02:55 PM
JJ Sinclair
external usenet poster
 
Posts: n/a
Default

Simon,
I can give you one data point. My early LS-6 came with only the bottom of the
wing sealed (mylar type, venetian blind, I think) Anyway, she didn't get her
killer climb, until I added mylar to the top of the wing. These were just stuck
on and not recessed into the wing. As a general rule, I would say that
recessing is better, but a bunch of work and if done by unskilled hands, could
result in a mess. Use trailing edge guides on your router and monitor the depth
very closely.

Before you start, I would lay a straight edge across the wing / aileron
juncture, see if lowering the wing side (routing out) will cause the mylar to
be forced up as it hits the aileron. This should not be allowed and will lead
to mylar separation when left in a hot trailer. BTW, the mylar width should be
just wide enough to just touch the control surface and shouldn't be forced up
when the control surface is moved. If hinge gaps are too wide to allow the
mylar to completely cover the gaps, then use a *gap bridge* made of thin
plastic or wide tape. Thake a good look at an ASW-27, Schleicher's attention
to detail is something to behold and the cleanest set-up I have seen.
JJ Sinclair
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Service Bulletins, Service Letters, Service Spares Letters O. Sami Saydjari Owning 5 December 26th 03 05:36 AM
History of Contest Scoring Bill Feldbaumer Soaring 8 October 8th 03 02:14 PM
Contest Numbers/Letters Ken Kochanski Soaring 4 October 5th 03 07:08 AM
Region 6 South Contest (USA) BMacLean Soaring 0 September 1st 03 08:37 PM
2003 Air Sailing Contest pre-report synopsis Jim Price Soaring 0 July 10th 03 10:19 PM


All times are GMT +1. The time now is 01:36 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 AviationBanter.
The comments are property of their posters.