SCAT Electonic News 22 February 2001 issue 560
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SCAT Electonic News 22 February 2001 issue 560
Table of Contents
=================
SO Props - Brokenspar
davis cox conversion - Davis
CG location - Boutillier
F1A Launch Stooge pics attached - Helmick
Glider Self Launcher. - Blackam
Glider self launcher. - Morgan
F1A Self launcher - Murphy
Response on F1A self-launcher
SCAT Annual / F1H Score Error - Cowley
27th, California F.A.I. Invitational & Canada Cup
52ND ANNUAL INTER-CITY MEET - Shailor et al
The attachments mentioned in some items will follow in a separate
e-mail , as soon as I get it together !
SO Props
========
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Fellow SO mentors ( ! ) :
Would you care to recommend a plastic prop
from all of the items offered in the hobby shop.
I have found several options, and looking at them
- I don't want to resort to intuition.=20
Needs a whirling arm testing assault.
My god ! there's even a little gear box ( all plastic ).
It has a nice lookling prop to go with it.
Super Marine remembered.
The State level flying site apparently is about 40 ft.
Brokenspar
davis cox conversion
====================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Its a shame when this type of information is aloud to stay in view for so
long. Lets see if I can put some facts forward.
The Teflon works just fine if you follow some rules.
Rule! Understand the concept in the first place. This a patented system that
is a break through in technology. Teflon only is affected by one thing,
temperature. It doesn't care how it got there, it only cares that it is too
hot.
How do engine get to hot? 1: The first one is the fuel formula is wrong and
it causes too much heat. 2: Running your engine at peak power on the bench
which will do it all the time. 3: running the engine ether over compressed
or too lean. 4: running an engine that is coated with varnish that insulates
the heat transfer out of the engine. I could go on but I thing you get the
picture. Some people don't get a run others use the same disc for years.
Bob Davis
CG location
===========
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Some questions were debated in FFML about CG location and Jossien'
Formula.
I suppose that they are related to what we call "new" Jossien's Formula,
but there is also the "old" Jossien's Formula, which is for me much
simpler and much better.
This is:
CG location(%of wing chord)= Stab area x Moment Arm x Wing Span x K factor
Wing Area x Wing Area
The only problem being to find one's own K factor, but it is very easy to
calculate it from similar and successful models.
For instance I use on my F1Cs a K factor ranging from 66 to 69. For F1B
and F1G I used a lower K (I would have to search in my records, but
probably between 55 and 60)
The very important thing is to use in all calculations the Mean
Aerodynamic Chords (MAC) for wing and tailplane. For instance the moment
arm from wing root to tail root has to be increased if the tailplane
leading edge is rearswept.
Of course the result is given for wing MAC, not root. This was not
considered in original old Jossien's Formula.
You can now use safely the "Jossien-Boutillier" Formula.
Incidentally Rene Jossien (nickname: Le Saint) is a good friend and
was my Maestro when I started building F.F. models in 1956. I used to
read his features every month in Modele Magazine and met him only
years later when I retuned to active modelling in 1967 after some some
years wasted in University and Army.
Thermals.
Bernard Boutillier
F1A Launch Stooge pics attached
===============================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Dear Editor, stumbled into SCATEN recently from the
NFFS website and got signed up. I flew F1A's from '69
to about '87, then '95 and '96. When Marc Nagasawa
died in early '80, I ended up with his folding glider
stooge. In response to Rey Mazzocco's query in a
recent SCATEN, I took some pictures of it, and I am
attaching them to this, in case you have a way to post
them or a link to them. The wing is an old 1/2a gas
wing, but show how the wing is trapped by 1/16" wires
coming over the TE. The launch rails fold in half, and
the legs/ struts fold under. I don't know of a model
damaged by use of this stooge, and I used it a lot.
While I read Linko Salo's article a couple of times
and understand the basic concept, I can't say that I
could build anything from it that wasn't hazardous!
If Craig Cusick is still around, live and well, give
him my greetings, please! See ya in October!
Thermals, Steve Helmick
(ex-editor Strat-o-Bats NL BAT SH'T)
Glider Self Launcher.
=====================
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The simplest and most effective self launcher I used or saw is attached
in a pdf. Two 12mm (1/2 inch) wooden dowels and two short pieces of 3mm
(1/8) music wire. It holds the model firmly even in strong wind. A quick
pull on the line and the model is free...
Richard Blackam
Glider self launcher.
=====================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
To launch a glider all you need are two rods about 1.5 m long. The rods,
which can be wood dowel or al tube have one end sharpened to stick into the
ground and a stop about the size of a matchbox taped on about 0.5 m from the
other (non-sharpened) end. The rods are stuck into the ground about 25 cm
apart at an angle of 30 deg to the horizontal. The rods should be splayed
out so the top ends are spaced by 40- 50 cm to give better support for the
wings. It is usually convenient to prop the rods up on a model box to
maintain the angle. The glider simply rests on the rods with the wing
trailing edge against the stops. The tail is UNDER the rods. When you pull
the line the glider simply slides up and off the rods. If you want, the
stops can have fingers that extend out over the wing to stop the model
getting blown off the stooge. This is useful if it is basically calm but
there are a few gusty periods. Of course if it is at all breezy you don't
need a launcher - just run and slowly let line out. When your friends ask if
they can use your self launcher make sure to tell them the tail must go
below the rods - otherwise it will be removed by the stops!
F1A Self launcher
==================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
While flying in Japan with the YSF group I observed several flyers using a
very simple F1A sself launcher that was based on a bicycle brake. The brake
was mounted on the top of a rod of about 1 meter in length that was attached
to a base plate staked to the ground. The brake cable was attached to the
plate holding the brake closed so that it griped the model's body. The
model was launched by pulling the line forward causing the brake to release
its grip. I published a drawing of this launcher in the Magnificant
Mountain Men news letter several years ago. Please contact Rick Pangel at
This email address is being protected from spambots. You need JavaScript enabled to view it. if you desire to build one. Pete McQuade has been using
his with great success for many years.
Jerry Murphy
AMA 917
Magnificent Mountain Men
Response on F1A self-launcher
============================`
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
In a message dated 03/21/01 7:53:02 AM Central Standard Time,
This email address is being protected from spambots. You need JavaScript enabled to view it. writes:
> Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
>
>
> > F1A Self-Launcher
> > =================
> >
> > Is there a good method for launching a F1A while practicing by yourself?
>
> Sure. Funny thing that no F1A flier has commented anything
>
Tapio,
I have received several direct responses to my query including a drawing and
some pics, along with several ideas on how to improve them. If anyone is
interested in what I have learned, just let me know.
Thermals,
Rey
SCAT Annual / F1H Score Error
=============================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Roger,
* I notice there is an error in the F1H scores reported in SEN, which =
should read as follows:
SCAT Annual / F1H Score Error
F1H
Contestant R1 R2 R3 R4 R5 FO1 FO2 FO3 FO4 FO5 TOTAL
1 Busnelli 120 120 120 120 120 180 240 300 360 420 2100
2 Cowley 120 120 120 120 120 180 240 300 360 206 1886
27th, California F.A.I. Invitational & Canada Cup
==================================================
27th, California F.A.I. Invitational & Canada Cup
***WORLD CUP EVENT***
OCTOBER 5th.,6th. and 7th. 2001
FOR CLASSES: F1-A, F1-B, F1-C, F1-G, F1-H, F1-J
FRIDAY OCT. 5TH. F1-G, F1-H and F1-J
SATURDAY OCT. 6th. F1-A
SUNDAY OCT. 7th. F1-B and F1-C
F1-G, F1-H & F1-J Friday October 5th. 2001
-5- One hour rounds commencing at 08:00 AM
F1-A, Saturday October 6th. 2001 ** First flight 210 Seconds
F1-B & F1-C, Sunday, October 7th., 2001 ** First Flight 240 Seconds
-7- One hour rounds commencing at 08:00 hours
Fly-Offs will start at 5;00PM "FIRM" as scheduled
Friday:F1-G = 4:30 to 4:40 *** Saturday: F1-A = 4:30 to 4:40 - 5:15 to 5:25
F1-J = 4:45 to 4:55 *** Sunday: F1-C = 4:30 to 4:40 - 5:15 to 5:25
F1-H = 5:00 to 5:10 *** Sunday: F1-B = 4:45 to 4:55 - 5:00 to 5:10
Due to no timekeepers available, timers will not be provided,
Please find someone to fly and time with you at your pole position.
AWARDS
Perpetual Trophies to winners
Engraved Crystal Trophies 1st. through 3rd. place for F1-A/B/C
1st. through 3rd. place for F1-G/H/J
NOTE: AS PER AMA DIRECTIVE, "ALL" COMPETITORS
MUST HAVE AMA INSURANCE
ENTRY FEE - US$ 25.00 FOR F1-A, F1-B & F1-C
$10.00 FOR F1-G, F1-H & F1-J
(JUNIORS 1/2 PRICE)
Contest Directors: - Juan A. Livotto 13212 Lake St. LA, CA, 90066, USA
Phone: 310-391-5986…..e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Leslie Farkas 21 Misty Moor Dr. Richmond Hill, Ontario, L4C 6P9, Canada
Phone: +1 905 886 30 25 Fax: +1 905 886 30 25….e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
27th. California F.A.I. Invitational & Canada
Cup
***WORLD CUP COMPETITION***
ENTRY FORM
NAME: -------------------------------
ADDRESS:-------------------------------
CITY, STATE, ZIP:-------------------------------
COUNTRY:-------------------------------
FAI LICENSE NUMBER:-------------------------------
PLEASE ENTER ME IN:
F1-A 25:00 _____________
F1-B 25:00 _____________
F1-C " 25:00 _____________
F1-G: .. " 10:00 _____________
F1-H: .. " 10:00 _____________
F1-J:R " 10:00 _____________
TOTAL:R __________
NON U.S. OR CANADIAN FLYERS MUST PAY AN AFFILIATE MEMBERSHIP
FEE TO A.M.A. OF US$ 28:00
ENTRY FEES MUST BE RECEIVED BY SEPTEMBER 22nd. OR LATE FEE OF $35.00
WILL BE ASSESSED.
SEND ENTRIES TO:
LESLIE FARKAS
21 Misty Moor Dr.
Richmond Hill, Ontario, L4C 6P9
Canada
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
52ND ANNUAL INTER-CITY MEET
===========================
DETROIT BALSA BUGS
host the
52ND ANNUAL INTER-CITY MEET
JUNE 23 & 24, 2001
AMA FIELD -- MUNCIE, IN
*THIS IS AN AMERICA'S CUP CONTEST*
? SATURDAY, JUNE 23RD
FAI F1A AMA EVENTS
(JSO Combined) F1B (JSO Combined) 1/2A Nostalgia
F1C ABC Nostalgia
(J) (S-O Comb.) P-30
*7 one hour rounds starting at 8:00 Catapult Glider
a.m., 3 min. max. weather *2 min. max., starting at 9:00 a.m.
permitting.
? SUNDAY, JUNE 24TH
FAI F1G AMA EVENTS
(JSO Combined) F1H 1/2 a Gas (J-SO)Moffet (JSO)
F1J ABC Gas (JSO) HLG (J-SO)
Mulvihill (JSO)
*5 one hour rounds starting at 8:00 *2 min. max., starting at 8:00 a.m.
a.m., 2 min. max.
? ENTRY FEES:
- $20.00 for Large FAI events, $10.00 for Small, $10.00 for each additional
FAI event.
- $10.00 for AMA and Nostalgia, includes first event. Additional events at
$3.00 each. Junior flat entry fee of $3.00 includes one or all events.
- Valid AMA License required, with FAI stamp for FAI events if counted
towards program.
- Trophies awarded to Third Place in all events.
? MISCELLANEOUS:
- All flights must be made by 5:00 p.m. on Saturday, and 4:00 p.m. on
Sunday.
- Flyoffs will start as soon as practicable after 5:00 p.m. Saturday and
4:00 p.m. Sunday, and will be conducted per the FAI sporting code, AMA and
SAM rules.
- Scores must be posted after each flight. Flights not posted will be
voided.
- F1C flyers are to provide their own fuel.
- FAI Events run per American's Cup Rules, including launching from assigned
poles.
- Teams of two in F1A, B & C will receive additional team awards. Teams
must be identified before the start of the first round. Those not
registering will be randomly assigned.
? CONTEST MANAGEMENT:
Contest Director: Bob Bienenstein, 9821 Colwell, Allen Park, MI 48101
(313) 382-8180
Assistant C.D.: Paul Crowley, 32604 Tecla, Warren, MI 48093
(810) 294-1236
Bill Shailor, 2317 Clawson, Royal Oak, MI 48073 (248) 398-3786
...................
Roger Morrell
