SEN 1229 - 10 July 2008

Table of Contents - SEN 1229  - 10 July 2008


  1.  The leeper on Lindner
  2. FFQ
  3. Sierra Cup
  4. How heavy do you need to be ?

 The Leeper on Lindner...

WOW, I can't believe Rudi has passed on, as his Nordic victories with
Spinne inspired my first Nordic, finished May 25, 1957, named 'Spirod'
It had V dihedral, constant chord and tip plates!
[I flew Ramrods too then, you see].
The Nordic Team Eliminations were next day, May 26, 1957 at
Sepulveda Basin, 51 years ago, per my log!
We flew 5 flights, I was trimming each flight[nothing has changed!],
got maxes in rds 4 & 5 with my score of 11:24 qualified me to advance.
After 3rd round, I added 3 pinhole between each rib just back of LE as turbulation, which surely helped it make the maxes.
Maybe Rene L will read and add something to this thread.
He is in Germany at this time.
BTW, the term 'F1A' always seemed too mundane to me, so I think I
will return to calling the event 'Nordic' again, in Rudi's honor, and as thanks for his inspiration!
We never met, but I knew you, Rudi...
Onward & Upward,


  This new edition of Free Flight Quarterly has as a theme  Open Rubber models . There are several articles on the English type of Open Rubber model, presenting the creations of Phil Ball, Dave Hipperson, Laurie Barr and Ed Bennett. Other types of Open Rubber model are also included in this issue, such as Dave Ackery's  "El Toqui", an  F1B-based model and Ernst Johnson's ultra-light model of superb performance.  In the next issue of FFQ, the Open Rubber exploration will continue and will center on the American Mulvihill and Dawn Unlimited models.
Other articles in the July issue include the 6th and last installment of Martin Simons' great traverse of the airfoil history and development with his thoughts on current glider airfoils. Reid Simpson and Don DeLoach bring the elegant Talon A2 glider of the 60's and the new DeLoach Super Talon development of the original for  the NFFS Classic Towline category. John Lorbiecki concludes his article on the trip to the World F1J Championship by the American Junior Team and Aram Schlosberg deals now with the more sophisticated variable surface F1Q models.
An intriguing Coupe design by Andrew Longhurst, the Couper "S", shows what great performance can be obtained with careful thought and conventional materials. A sequel to the Findahl and Eggleston articles in FFQ#27 uses XFoil to compute the properties of the airfoils used by Findahl and Eggleston, revealing interesting differences and advantages of each approach to improved zooming in F1A gliders.
As always, complete table of contents and magazine cover in our website:

Sergio Montes


Sierra Cup

From: Mike McKeever <This email address is being protected from spambots. You need JavaScript enabled to view it.>  It's time to think about Endless October:  
Here is an official entry form for hte Sierra Cup, feel free to print and send.  
Look forward to the fun in October! Mike

32nd Annual Sierra Cup
FAI International Free Flight Contest
October 7-9, 2008
A World and America’s Cup Event
Sponsored by:
Southern California Aero Team
Lost Hills, California, USA

Schedule of Events:

Tuesday, October 7 F1A, F1B, F1C and F1P
7 one hour rounds starting at 8 AM. Flyoffs start will be posted after Round 7.

Wednesday, October 8 FAI “mini events” F1G F1H F1J
5 one hour rounds starting at 10AM. Flyoffs start will be posted after Round 5.
Fly offs beginning at 7AM for any 10 minute flyoff required from Tuesday.

Wednesday Evening Banquet and Trophy Presentation at the Elks Club Lodge-Wasco.

Thursday, October 9 Reserve day

The contest will be run to current 2008 FAI rules and maxes.

Send Entries Fees to and Request Further Information From:
Mike McKeever-CD
4252 Mockingbird St
Fair Oaks, Ca 95628
916) 967-8475
This email address is being protected from spambots. You need JavaScript enabled to view it. Entry Fees: Any single event (Mini or Maxi) $45 A “Mini” event and one “Maxi” event $60 As many events as you can fly $80 Entry includes banquet/extra banquet $20 each Entries to be received with check payable to SCAT by September 26. Foreign competitors may advise of entry before September 26 and pay no later than October 6 Entry: Name:_____________________________________________AMA #___________________ Address:__________________________________State_____Zip_________Country_________________ Event: Circle those you will fly F1A F1B F1C F1P F1G F1H F1J Entry Fee and Extra Banquet Tickets Enclosed $____________ Vegetarian Meal Preferred Please circle


How heavy do you need to be ? - Lighten up you Guys !
As with all things scientific, we can learn a lot about F1A flying
from the originators of the sport, namely the Greeks (later copied by
the Romans).  Did they use divers weight belts or amphoras of Abbott
Ale - no, much too much inertia !  Instead they cunningly sidestepped
the FAI aeromodel rules of the time, by instead enhancing the
aerodynamics of the sportsman with down-force generators.  You only
have to look at the statue of Mercury (so named because he always
drove to the flying field in a beat up old Ford Mercury) and winner
of the Max Men International in 300 BC, to observe his winged Nike
footwear and helmet, a dead giveaway to the tactics of the day.  Now
all that the well dressed modern F1A sportsman needs is some stylish
new shoes and hat, plus add an inverted Rogallo Bat Man cape, and you
could be generating some serious negative G's to improve both
traction and line tension as you wind up for that 100m launch, and
still have thirst enough to sink a chalice full of champagne after
the Fly Off.

-  Biggles


Roger Morrell