SEN 937 - 20 Mar 2005
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SCAT Electronic News 20 March 2005 issue 937
Table of Contents
=================
AstroStar "P" kits - Ghio and VanNest
Wanted: Stabmount - Crowley
Len Surtees Discus HLG - Ray
Backing Biggles - Hatschek
Maxmen results revisited - Slobat
A letter of invitation
Tapered Wings with Sweep - Barker
d bbugs
Zeeked out - Mate
New Electronic Timers from W-Hobby
Reply to a considered responce - Nystrom
Seeligs - For SCAT. El.News - Boutillier
AstroStar "P" kits
==================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Junior FF Team Program: Walt Ghio, This email address is being protected from spambots. You need JavaScript enabled to view it.
To help support the Junior FF Team Program we are selling the F1P AstroStar
kit designed by Terry Thorkildsen to anybody who whishes to purchase them.
The proceeds made from the sale of the kits will be sent to AMA for the
Junior FF Team travel fund for the 2006 World Champs. The complete kit
along with a short kit which includes the laser cut ribs and plans are for
sale from Bob VanNest. The cost is $75 for the complete kit and $25 for the
short kit, postage included. Please contact Bob at 7770 De Carli Ln.,
Salinas, California, 93907. Phone number: 831-663-5254. E-mail:
This email address is being protected from spambots. You need JavaScript enabled to view it.
Wanted: Stabmount
=================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
I am in need of a carbon fiber stabmount.
1.5" across, .38 front to back with a .30 dia. hole. It should put the
bottom of the stab about .12 above the tailboom tube. They most likely were
used on F1A's before bunters. Any out there?
Thanks,
Paul Crowley
Len Surtees Discus HLG
=======================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Hello Roger,
I have a knee problem and do not wish to pursue Discus at this time.
My Surtees Sting 30 Discus kit is for sale for $50 plus shipping.
619-766-4650, This email address is being protected from spambots. You need JavaScript enabled to view it.
Please put this in the newsletter.
Thank you, Ralph
Backing Biggles
===============
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
>NFFS Membership Drive - A Considered Response: - Biggles
What follows is my response to Martyn's proposals:
Hi Martyn,
Congratulations on a well-thought-out and cogently presented analysis and
argument about our future. I do not agree with your every suggestion but I
would be happy to back many of them. Unfortunately I'm no longer physically
capable of volunteering to help in any significant way. But I will try to
contribute a few suggestions from time to time.
My first suggestion is to pay more attention to Flying Models. I had not
read it for years but I got a new subscription for Christmas. I am not
acquainted with the current editor (Frank Fanelli) but the magazine's FF
content greatly exceeds that of AMA's slick but incomplete modeling coverage.
What's lacking in Flying Models, however, (based on reading only a few issues
since Christmas) seems to be serious, high-level FF coverage. This might be
a column devoted to NFFS matters, or FAI, or top competition. My thoughts
are still forming.
The last article I wrote for FM (the late Don McGovern was then the
editor) was a report on the 1975 WC in Bulgaria. It went 8 pages! A couple of
years prior to that I wrote a 7-pager on circle tow, which I believe was the
first major article on that subject in the US modeling press. Fanelli
recently ran a 2-pager on a free-wheeling system for small rubber jobs. It's
entirely conceivable to me that he might welcome some major input as a regular
thing.
I am not the person to contribute such. I just can't get around as much
as I wish I could. The best person for this task, in my opinion, is Martyn
Cowley. As a one-time editor of AeroModeller (and a good one in my judgment)
you are certainly qualified. Why not think about this and perhaps make a
proposal to Flying Models?
Best regards,
Bob H.
Maxmen results revisited
========================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Gentlemen, It seems that we had some errors in the recently sent Maxmen
results. Enclosed is the corrected edition for F1B. The others are
correct, I think. GB
BURDOV, A RUS 2280+412
RUYTER, P NET 2280+358
EVDOKIMOV RUS 2280+348
RYBCHENKOV RUS 2280+340
BOOTH, B USA 2280+337
JENSEN, B USA 2280+312
BIEDRON, B USA 2280+299
BRADLEY, J USA 2275
BEN-ITZHAK, I ISR 2272
MULLIGAN, M USA 2263
GUNDER, T. USA 2262
JONES, R. USA 2259
GHIO, W USA 2259
ANDRIUKOV, A USA 2257
MORRELL, R USA 2250
HORAK, L CAN 2236
TYMCHEK, B USA 2230
GORBAN, E UKR 2203
KULAKOVSKY, O UKR 2198
SHAILOR, P USA 2190
SEIFERT, P. GER 2150
EMERY, J USA 2147
ACKERLEY, C CAN 2141
NELSON, E USA 2115
PISERCHIO, R USA 2115
ULM, A USA 2098
RADZUINAS, S. USA 2064
RAYMOND, A. USA 1979
SCHEIMAN, P USA 1969
WALTONEN, Y FIN 1807
SEIFERT, R. GER 1583
WOOD, D USA 1485
CLAPP, J USA 807
LUEKEN, J USA 513
ROHRKE, R USA 472
CROWLEY, P USA 460
FELIX, R USA 379
IOERGER, T USA 360
SOMERS, J NET 312
RAYMOND, J. USA 301
WOODHOUSE, M GBR 284
VAN MERKESTYN, NET 180
ENGELSKIRGER, JUSA 95
JONES, C. USA 85
A letter of invitation
======================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Dear Sir/Madam,
Very glad to write to you,there will be the 2nd international model
exhibition in Shanghai China,It is a famous model show in China model indusry!
It will gather all kinds of model manufactures from China and all around the
world.
we sincerely invite you to participate or visit this show:)
If you need more info about it,just feel free to tell me:)
Exhibition Time
Preparation time: May 18th-19th,2005
Exhibition time: May 20-23, 2005
Dismantling time: 12:00 of May, 24th,2005
Tel: (86-21)64837603
Fax: (86-21) 64826717
Mobile:(86-21)-27974927
Contact: Lisa
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Website:www.shmodelexpo.com/index-eng.htm(English version)
www.shmodelexpo.com£¨Chinese version)
Regards!
Lisa
Tapered Wings with Sweep
========================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
In reply to Mike Segerave's request for a way of calculating the ordinates
of a rib, at right angle to the leading edge on a wing with taper and sweep.
The main problem is not the calculations but conveying the diagram on which
the calculations are based! Please sketch a wing half to the following
directions. (Dimensions don't matter but a leading edge sweep of about 40
degrees and a trailing edge about 10 degrees will give a convenient
diagram.)
Draw a vertical line for the root chord. Draw leading edge and trailing
edge from ends of root chord at the sweepback angles and continue them to
meet at a point. Mark the point as P and call the whole length of the LE
(from root to P) as dimension d.
At any distance dr along the leading edge from the root, sketch in the
required rib at right angles to the leading edge.
Mark any station point S on the root chord at a distance, stn, from the LE.
Join points S and P with a line (called Station Line for future reference).
Where the station line crosses the required rib line call that point Sr.
Call the distance from the LE of the required rib to point Sr, stnr.
Call the angle between the LE and the station line, alpha and call the angle
between the LE and the root rib beta. (Note beta = 90 - LE sweep angle).
In what follows ord is the ordinate of the root rib at the stn chosen and
ordr is the calculated ordinate for the required rib. Then, at last!
Distance SP = sqrt(stn^2 + d^2 - (2 x stn x d x cosbeta))
[cosine rule]
Angle alpha = arcsine(stn x sin(beta)/SP)
[sine rule]
Distance stnr = (d-dr)tan(alpha)
Distance SrP = sqrt((d-dr)^2 + stnr^2))
Ordr = ord (SrP/SP)
Although not part of the original brief I have just realised that dimension
d can be calculated directly if the sweep angles and root chord are known.
If theta = 90 - TE sweep angle, beta is as before and c is the root chord
then:
d = c tan(theta)/ cos(beta)(tan(theta)-tan(beta))
Looks a lot of work at first glance but a spreadsheet table with root rib
stations and ordinates across the top would turn out the intermediate rib
ordinates like shelling peas!
Regards
John Barker - England
d bbugs
=======
56th Annual Inter-City Meet
The Detroit Balsa Bugs will host the 56th annual Inter-City Meet on June 17-19, 2005.
We will also be holding separate FAI Qualifiers on Thursday, the 16th and Friday the 17th.
This will give three days to get three contests in. No rounds. All
ages/events combined for the 16th and 17th meets. The only requirement is
that you enter the Inter-City meet.
We are also flying F1P on Saturday, the 18th.
Juniors and Seniors, only.
Please contact me if you want a flyer or additional information.
This email address is being protected from spambots. You need JavaScript enabled to view it.
Zeeked out
==========
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
ZEEKS, I have drawn up nearly every Zeek variation ever built. Including
the Zeebin. About a dozen total. It has taken many months and thanks to
you guys I was able to accomplish this. Thanks to Lew and some of you I
was able to solve the discrepancies in Murfs drawings. God bless you
Murf but like all of us you made mistakes. Because they are CAD drawings
they can be scaled to any size. Lew Mahieu approves only one of them,
the Air-O kit version which he drew up himself for Ray Acord. Which
incidentally is ignition eligible contrary to Murf's "Zeek Cronicles".
He showed only one in the "Cronicles" as ignition eligible. I have drawn
up that one too. Of course the rest are all NOSGAS eligible too. I can
supply full size plans with wing and stab rib templates for $15.00 a
shot. 13.00 for NFFS members. Plus postage. For 5 bucks and a SASE I can
send you an 8.5 x 11 or 14 print out of the plans. Another 3 bucks gets
F.S. rib templets. Thanks to ALL that helped. I have plans for many
other O/T and Nostalgia airlplanes. A few straight AMA competition. Also
some scale stuff. Not all are CAD. SASE for list of others. Don't miss
my 2005 Sympo paper on R.O.W.
Regards and thanks, Ed Mate
New Electronic Timers from W-Hobby
==================================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Hi Roger,
Please post the following on SCAT message board:
New Free Flight Electronic timer (WH05 FFC) is available from W-Hobby
Free Flight. Please visit the website http://w-hobby.com
for photos, description and user manual. WH05 is based on AMS7
controller by Ari Sinisalo (Finland) and uses the same programming
software (PC Windows and Palm Pilot). Timers are in stock and available
right away.
Prices: 60.00EUR per set (Controller, microswitches, buzzer and
programming cable). 180mAh 4.8V batteries are 15.00EUR per set.
North America customers can get Timers and Tech Support from Vidas
Nikolajevas (Ontario, Canada).
Please feel free to contact us for more info at: This email address is being protected from spambots. You need JavaScript enabled to view it. or
This email address is being protected from spambots. You need JavaScript enabled to view it.
Thank you!
sincerely,
Vidas Nikolajevas
Reply to a considered responce
==============================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
I feel Martyn's comments, as well meaning as they are, may be off base as
to the root problem of Free Flight. Trying to draw parallels with any of
the other model aviation venues only serves to point out one huge
difference (yes there are more than one). And that difference is the
outdated BOM rule. How can we invite people into our hobby and then
throw up a huge barrier to them doing it?
And, as a former membership officer of NFFS, I closely watched junior
memberships. The Junior fee was so low as it could never be any kind of
barrier to membership. I found that of the few Juniors we had, very few
ever renewed, and almost none once they reached the age of the full
dues. It is my feeling the vast majority of Juniors who do join, do so
only for the scholarship attempt. The situation may have changed since I
left office, but that is what I saw for eight years. I ran a test at the
USIC one year, when a large number of kids were participating in SO and
other events. I offered membership for one dollar. No one took it.
We have met the enemy, and he is us.
Hank Nystrom
Roger, I will never know if you use this or not unless someone forwards
it to me since you will not tell me how to find the SEN Digest on line.
[Hank
There is no conspiracy theory or even practice. You are not excluded
from SEN ... just because you are a clockwork guy, on the East
Coast, with the NFFS or some such reason. If I've not responded
to a request it's just been that I overlooked or
forgot to do it.
SEN is online at
www.aeromodel.com/scat
]
Seeligs - For SCAT. El.News
===========================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Re: Seelig F1C timers
When tidying up my workshop I found some Seelig F1C/4 timers.=20
They are fan type, of latest production with big diameter winding shaft.
3 are ready to use with armstops added, one is new in bag.
Also new in bag: a Chinese copy of Seelig F1C/5 with wiggler (not fan =
type)
If interested contact me off list.
Thermals.
Bernard Bout.
This email address is being protected from spambots. You need JavaScript enabled to view it.
.............................
Roger Morrell
