SCAT Electronic News 20 May 2001 issue 581
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- Category: Archive 2001
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SCAT Electronic News 20 May 2001 issue 581
Table of Contents
=================
Flying Wing in "Raiders" - Hines
2001 Free Flight Forum Report - Dilly
dissolving superglue
[pmac] April 01 TAN II - Brocks and Andresen
Rubber Situation - Shailor
H's floating rubber - Brokenspar
More on Binoculars ... - Salzer
Bins - Vincent
career info interview ...pls reply - Yebra
Flying Wing in "Raiders"
========================
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Cam,
My understanding was that the flying wing shown in "Raiders of the Lost =
Ark" was purely fictional and just a prop for the flick. Therefore =
we(modelers I know and I) doubt there is any drawing available.
Lee Hines
2001 Free Flight Forum Report
=============================
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Roger,
Could you find space to disseminate the following to the faithful=
please via SEN.
2001 BMFA FREE FLIGHT FORUM REPORT =
The new BMFA Free-Flight Forum Report is now available. It is the
seventeenth in a series of annual publications that both explain the
technicalities and developments of free-flight and at the same time raise
funds to cover some of the costs of sending the teams that represent the
United Kingdom at World and European Championships.
As usual, the latest Report ranges across a wide spectrum of the sport, as
the following contents list shows:
Laurie Barr - The Pleasures of Indoor Model Flying; Bernard Aslett - Rubber
Ramblings; Andy Hewitt - Chucking and Cursing (Hand-Launched Gliders);
Trevor Faulkner - Why Fly F1E Magnet?; Paul Chamberlain - Improving Contest
Performance Through Nutrition; Dave Clarkson - Binoculars for Timekeepers;
Peter Williams - My F1A System - What Can Go Wrong Does Go Wrong; Pete
Watson -1/2A and F1J Developments; Martin Gregorie/Chris Edge - Heat It Up
Scotty (An Epoxy Curing Oven); Dave Clarkson - The Timperley Flight Scoring
System; Mike Woodhouse - Free-Flight Tomorrow ?
Copies are available from : Martin Dilly
20, Links Road,
West Wickham,
Kent,
BR4 OQW
or by fax to: (44) + (0)181-777-5533, or by e-mail to
=
Prices are as follows:
UK - pounds stg 7.00 including postage
Airmail to Europe - pounds stg 8.00 " "
Airmail elsewhere - pounds stg 9.00 " "
Cheques should be payable to 'BMFA F/F Team Support Fund', in pounds
sterling only, and drawn on a bank with a branch in the UK; you may also
order by credit card.
All proceeds go towards the funding of Britain's teams for indoor and
outdoor F/F World and European Championships.
Thermals,
Martin
dissolving superglue
====================
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Could anyone tell me how to dissolve superglue?
Katie
[pmac] April 01 TAN II
======================
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Here is is a report by Peter Brocks, indicating that for similar performance
he needed 10-20% more cross section with April 2001.
Stuff may actually be OK if this is taken into account.
H
>From: "brocks.az"
>To: "PMAC"
>Subject: [pmac] April 01 TAN II
>Date: Thu, 17 May 2001 18:37:04 -0700
>
>Dick Strang asked about this new rubber. I just received 2 lbs - here are
>my preliminary thoughts:
>I made a 9.8 g, 10 strand coupe motor and at an ambient temperatur of 97° F
>wound in slighly more than 700 turns with a little more than 20 in-oz. I
>have never gotten that many turns with 10 strands. Typically with May 98 i
>get 560 turns but 24+ in-oz, with May 99 I may get 650 turns. Then I made a
>9.8 g, 12 strand motor. The restrand formula for the turn multiplier is
>(12/10)power 1.5 = 1.31. I took the 700 turns/ 1.31 = 534 turns. So I wound
>the 12 strand motor to 525 turns and had a torque of 29 in-oz. The motor
>did not break but had severe nicks after unwinding. At a second wind it
>broke at 500 turns. - The max. extension of this rubber is at least 10.5.
>It is stretchy and brittle - probably even more than the May 99. Using 12
>strands April 01 in lieu of 10 strands May 98 should give a slightly
>zippier performance. I have not done any flight testing.
>I will be flying to Europe this Sunday and will be back June 12 - hope you
>all have a good contest.
>Peter
>
[Hermann
Peter does not say he needs more cross sectional area, he says
he needed more strands. ... maybe making up his 'normal'
cross sectional area. I found with F1B motors that 30 strands
was better than my usual 28. But I just made my motors up to
a set length, not number of strands. They came out to be 30 strands.
This indicates that the cross section is slightly smaller, this happens
between batches.]
Rubber Situation
================
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Herman writes that his Tan II floats on water. I have always pre-washed
motors in a water and Murphy's Oil Soap mixture to get the talc off (ala
Paul Crowley).
The motors have always floated. I would get nervous if they didn't.
The key, as far as I'm concerned, is getting a motor that can be wound
tight, high torque, and not explode in hot weather. After all, we fly
primarily in the summers around here.
I'm not particularly concerned with a motor that will stretch a great
distance. I am flying Wakefield, not high-start R/C Gliders. Testing
stretch, all on its own, is of limited value.
Testing needs to take into account actual, not hypothetical use.
Before we get nervous over all this, let's see how the new stuff behaves on
the field.
As far as binoculars go, I have a pair of Leica 10 x 42 trinovid binoculars
that are outstanding. A little on the pricey side, but I never saw a Brinks
truck following a hearse.
Bill
H's floating rubber
===================
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Hermann
Tell us more about rubber floating. Some do, some don't..? What does it mean ?
I tried a little piece. Broke the surface tension, and it still floated.
I remember that William Howard Taft could not float in his bathtub, but he had
other problems ( as to floating ). Then, he had a special tub built.
yours, anxiously waiting..
Brokenspar
More on Binoculars ...
======================
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I do agree with the recommendation for binocs with built-in compass.
Watch out for one feature when shopping for this:
Some makers put the compass in a sort of can on top of the housing, others
have a more integrated design where not much sticks out: Buy only those!
I had one of the first type, fell down while chasing my plane, and knocked
the compass right off. Trying to epoxy it back on sort of worked for a time,
but not long.
Interesting, however, the optical properties were not lost at once. The
inert gas filling was lost, and this lead over time to the picture getting
worse.
Last tip: find out wether the maker has some sort of service worthy of that
name. I was offered a repair at about double the price of a new one ...
which I bought somewhere else!
Better luck to you!
Binoculars
==========
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When looking for Binoculars for this specific use, aside from questions of optics,
resolution etc. - the detail that the binocular has a screw fitting for the tripod mount
is to be emphasised. Without that feature, you are screwed ( so to speak ) You have to
find a clamp, or make one, or drill and tap a hole in the bottom of your Trinovid.
Or, duct tape. Not elegant !
Brokenspar
Bins
====
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Roger, Have been following the debate on bins, binos or whatever you want to call
them with interest as they are essential to me.
Steve Helmick's comments especially, yup the bins with a built in compass would be
idea but here in New Zealand they are over a thousand bucks each.
>From my own experience:-
*Bins, I am using Jason constant focus bins , which work OK with eyeglasses. They
may not be the best optically but the model is in focus when you first lock on to
it and stays that way.
*Tripod,bipod or monopod. I stick with the tripod. I suffer from RSI, the computer
"disease" which affects muscle tone so start shaking if I hold objects like binoculars
up for a while. The tripod mounted bins are perfect. Using the handle out in front
enables total control of the bins-you can even look at the watch and then go back
to the bins and have the model in sight. Once the model d/ts by locking the tripod
on the last sighting gives a good reference on line.
Lincoln
career info interview ...pls reply
==================================
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Dear Sir/Madam:
I’m an incoming high school senior in this coming school year in the
Philippines. I am planning to take up aeronautical engineering in college.
Our school guidance councilor required us to interview people who are
trained or is training for my planned college course for enrollment. Pls.
take some time answering the following questions. I would really appreciate
your immediate response to letter.
· Pls. state your name.
· Pls state your age.
· In what institution did you train for your current job.
· What inspired you to take the course for the job.
· What do you most like with the job?
· What do you dislike most about the job?
· How do you prepare for the job?
· Do you consider the training you had to be adequate for the job?
· How much do you earn?
· What is a typical day like?
· What do you see in the future for a job like yours?
· What special skills are required for the job?
· What are projects and/or activities you remember most while training for
the job.
Thank you very much.
Respectfully yours,
Mark Victor E Yebra
Incoming senior student
Philippines Science High School
..................
Roger Morrell
