SEN 1426

Table of Contents - SEN 1426



  1.  Finals latest
  2. Model Box Size
  3. Gregorie in a Box
  4. and from France
  5. F5D prop Art
  6. Those Hot props
  7. Lesko Flaps to Number 1 in Hungary - twice
  8. Tangent Classic Results

USA 2010 FAI FF Finals at Lost Hills, Sept 24 thru 28 - Update and request


SCAT is hosting the 2010 FAI FF Finals at Lost Hills, Sept 24 thru 28. Participants have received  Finals Bulletin 1 and 2 in the Team Selection Newsletters. 

We are now seeking timer help. While the Finals  is a flier-timer format, there is a need for a few additional timers. The greatest need is for Sat. and Mon, Sept 25 and 27.  We would greatly appreciate timer help.  There are  several options and incentives: 

A) Volunteers,those who will time without compensation other than our thanks and the enjoyment of being on the front line in all the action

B) Paid timers, get $100 day, requires timing all rounds during a day (14 rounds plus fly-offs), payment in cash at the end of the flying day.

C) Same as B) but donate the $100 to the Jr Team fund

D) Fill-in timers, available to the Timer Administrator to fill-in as needed-- mostly during the first rounds, last and flyoff rounds. Those timing 7  rounds get a Sierra Cup Banquet  (Sat, Oct 2 )ticket, 14 rounds or more 2 banquet tickets.

The timer incentives are open to all,  our foreign fliers are welcome also. The incentives are on a first ask, first receive basis.  Please contact me by email, let me know what days you can time and which option you like.

I've gotten several requests for which days the events fly. This is set by and is in the 2011 Team Selection Program. For this Finals the days are:

Sept 25, Sat: F1B & C,   F1A fliers time

Sept 26, Sun: F1C & A,  F1B fliers time

Sept 27, Mon: F1A & B,  F1C fliers time

First round will start at 7:30.  30 minutes rounds with a ten minute time gap to the next event's start time.

Full round times and pole positions will be given to the competitors during processing on Fri (Oct 24)


Thermals, JIM

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Model Box Size

Chuck,
Several years ago Delta completely rejected my model box that had a 3D sum of 83" and I had to go across town in the middle of the night and mail it at a FedX station costing $175 overnight to Lost Hills.

 I now have a new box with 3D sum of 78" which  falls within the 63" - 80" $100 to $175 overcharge range for most airlines. 
All airlines seem to be inconsistant. A lot depends on the agent and his or her reaction in the first minute of check in. I have put some stripes around my box to make it appear shorter. For whatever reason, I haven't been nicked except once since the Delta experience.
Gil Morris

 




Gregorie in the Box

On Sat, 2010-08-21 at 08:32 -0500, Chuck Markos wrote:

> The current American Airlines size maximum is 62 inches 
> (length + width + height). That restriction is slightly
> more than I would need for safe packing of my current F1A
> airplanes. The box that I had used for several years
> measusres 72 inches. I would be interested to hear from
> others about their experience.
>
I've used a number of model boxes over the years with varying levels of
success and damage. Fortunately, the damage has all been to the box
rather than its contents, so I must have been lucky.

The best box I used was the last, though it was one of the most
expensive. I bought an ABS golf bag case and fitted it out to hold
models by fitting it out on the inside:
- an alloy U extrusion along both sides of the bottom half just below
the rim and made a 'toast rack' that clips across it to hold the
fuselages, secured with a brass tube through the joiner holes. Making
the toast rack 150-200 mwide and putting sponge plastic strips across
it will help to stop the fuselages thrashing about when the baggage
guys start playing catch with it.

- the empty case was quite floppy, but the rails and toast rack plus a
second clip-in cross brace at the other end made it surprisingly
rigid. With the following mods it became rigid enough to sit on.

- I put the toast rack toward one end and used ply to build storage for
tools, winches etc into the other end of the lid. This storage has a
lockable lid to stop the contents from leaping out and doing damage
when sliding down the carousel or in the hands of frisky baggage
guys.

- the bottom half was lined with stiff foam sheet (a cut-up 6mm [1/4"]
camping carry mat). The wings go here, along with a foam covered
balsa box for the stabs.

- I used two padlocks to keep the box closed, exactly as a golfer
would.

- I could carry 4 models in this case - three fit easily but getting the
fourth in, an M&K short electronic model, needed a bit of care. I'm
unsure whether you could get a very long wing into this type of case
so take your longest wings, or at least a tape measure, with you when
you go to look at one.

I was careful to make as little change as possible to the outside on the
grounds that airlines are very familiar with carrying gold bags in these
things and so it would be A Good Thing if they thought my model box was
just another model box. It worked: I had no problems at all when I used
it on my last visit to Lost Hills.

I'd be surprised of these exceed the airlines 62" limit, but it would be
wise to ask before buying.

==============
My next best box was made from 6mm foam board. That is 1/4" foam with
cardboard on each side. I used piano hinge screwed to wood strips to
hinge the lid. The wings and tails live in the bottom with the fuselages
on their sides in a tray that fits completely across the interior at
hinge level: the tray adds a lot of rigidity: its held in place by
doublers above and below it on all four sides. These make the long side
opposite the hinge strong enough to mount a recessed handle.

The foam board is easy to work with modelling tools and to assemble with
PVA. Then the corners were rounded off with a sanding block and finished
with 100 gsm twill weave glass cloth and epoxy, one layer on the inside
and two on the outside. This left the corners a bit vulnerable, so I
added 50mm (2") glass tape along all edges. This box is nice and light
to carry and strong enough for anything up to and including air travel,
though I was always wary of what a determined baggage guy could do to
it, and always arranged special handling for it.


Martin

And from France



So sorry about Reid and Jack. We will miss them.
About model box size, we experiment exactly the same with Air France: only one
checked luggage less than 158 cm and less than 23 kg. That means that we have to
pay an extra charge of 50 + 75 Euros !!! can be a great problem to go to World
Cup contests.

Bernard Boutillier




F5D Prop Prior Art


Roger,

That sawtooth LE prop brought back memories from almost 1/2 century ago when I joined AiResearch Phx, the largest producer of small gas turbines.  An acoustic engr was inspired by Owls and looked to the sawtooth LE as providing many small vortices instead of 1 large one off the tip.

A TopFlite prop was modified with the notched LE, & was dramatically quieter than the baseline.  So much quieter that they soon found the factor of 2 speed difference.  Aerodynamic performance wasn't checked, as no acoustic mod had ever improved performance.  Perhaps in this case it would have shown that a lower speed would have given he same perfomance and result in less noise.  Slow speed was basically the source of the Owl's stealth.

Incidently, in FLUID DYNAMIC LIFT, by Hoerner, sheet metal triangles named Strakes were shown to improve max lift.  They have the advantage over turbulators of not increasing drag at zero lift, as they are aligned into the airstream.  Tried some on a Cat I, IHLG, but like many things had little effect.  Unlike squaring off rounded tips which generally results in a measureable improvement, but that's a different story.

Hermann Andresen



Those hot props

Nurse SCAT,

Those items seen at Muncie look perfect for opening a bottle of Bud or other beverage.

Regards,

EoB
 

 




Lesko with 480 g heavy F1A Flapper double win in Hungary

Hello Roger,
 
Here is some interesting news from the European continent.
 
Best regards,
Leslie
 
 Hi,
this weekend was the 2nd repeat of Mura and Novohrad CUP  in Hungary -  this time  it was successful flyable.
Saturday, 21.August Mura CUP
very calm   0 -1 m/ sec and hot
F1A  18 of 48 full score
1. Lesko  Croatia        346 sec   with Flapper 480g
2. R.Koglot    SLO        340 sec    ( M&K XL Flapper)
3. M. Dvorjak  CZE      335 sec
Stamov   UKR    trouble with RDT in 4th  round - 125 sec
F1B
12 of 26 full score  
1. Gortoich       SRB   323 sec
2. Blagojevich  SRB   320 sec
3. Urban          CZE   315 sec
F1C
4 of 12 in FO
1. Gradi       ITA     408 sec
2. Patocs     HUN   335 sec
3. Sychov    SLO    309 sec
4.Truppe     AUT    280 sec
Sunday, 22. August   Novohrad CUP
beautiful weather, 7.th round 5 min
F1A  12 of 56 full Score
7 made 7 min
1. Lesko        CRO    325 sec  flapper 480 g
2. Vosejpka  CZE     316 sec
3. Stamov     UKR     307 sec   own flapper
Roland Koglot flew all round  Laminar model  . he dropped in 7.th round with 5 min max due to 92m height
In 6th round he reached a height of 107m  !!!!
F1B
12 made 7min  
1. Igor Vivchar          UKR  540 sec
2. Oleg Kolakovsky   UKR  432 sec
3.  Luman                 EST  393 sec
F1C
6 of 14 in FO
1. Truppe        AUT        393 sec
2. Yamasuki    JPN        358 sec
3. Burek         CZE        349 sec





Tangent Classic Results

News from the North.
Another Tangent Classic is history so start planning for next year.  Changes in the grass seed markets and allowable farming techniques have influenced our abilities to have clear field access in the Willamette valley.  As with all free flight contests the wind can make things extra challenging and did on Friday for F 1 AB&C, so we elected to fly two minute maxes to try to keep the models on our primary field.  It did not always work however.  Picking and staying in lift became more and more difficult as the day went on with only Ken Bauer maxing out in F1 A.  Blake Jensen, George Batiuk and Jack Emery managed seven straight two minute flights in F1 B to create the only fly off in the bigs.  We waited until early morning for the fly off which gave us cool and calm conditions.  Blake pulled off the win with George second and Jack third.
 
The wind was not as strong for the minis and I think most stayed on the primary field with out problems but again lift picking and staying in the thermals was very tricky.  Only Jim Parker and Brian Van Nest maxed out in F1 H with no Gs or Js managing the feat.  Jim won the morning fly off with a beautiful flight in the cool morning air.  Here are the numbers:
 
F1 A
 
1.  Ken Bauer             840
2.  Lee Hines              828
3.  Jim Parker             810
4.  Brian Van Nest      798
5.  Hector Diez            776
6.  Norm Smith            773
7.  Pierre Brun             717
8.  Don Zink                 311
 
F1 B
 
1.  Blake Jensen         1166
2.  George Batiuk        1141
3.  Jack Emerey             1120
4.  Roger Morrell            838
5.  Rich Rohrke              813
6.  Al Ulm                        761
 
F1 C
 
1.  Ron McBurnett          811
2.  Mike Roberts            240
 
F1 G
 
1.  Tiffany O'Dell            587
2.  Bill Booth                  563
3.  Derek McGuckin      483
4.  Jack Emerey            240
 
F1 H
 
1.  Jim Parker                833
2.  Brian Van Nest         697
3.  Norm Smith               579
4.  Lee Hines                  185
 
F1 J
 
1.  Mike Roberts            576
 
Thanks again to all that support our contest and and travel north to the beautiful Willamette Valley.
 
Mike & Ron




..............................
...
Roger Morrell