SCAT Electronic News 10 September 1999
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- Category: Archive 1999
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SCAT Electronic News 10 September 1999
Table of Contents
=================
Cutting Comments - Linkosalo
Payola for Hines
B.O.M. or rather who built the model - Hinson
Looking in Switzerland - Ross
Bob Mattes - Saw Blades - Tilson
Reply to Achterberg - Iele
50 years ago - Ellison
Cutting Comments
================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
A three wheel saw is a band saw, right? Have no experience with those, but
I have sawn my carbon spars for several years with a Minicraft table
circle saw. It is a 12V DC device (the motor is about the same size as a
Speed400), with a 50mm (2in) blade. It came with a toothed saw blade, the
one for metals and composites lasted about 1 meter of 1mm carbon before
wearing out... I then bought a carbide blade of the same size. This worked
much better, but still wore out. Eventually, when buying a new carbide
blade I came across a diamond coated cutting blade, and this single blade
has now lasted more years that I can remember (over 5 anyway).
The saw motor is a bit weak, it bites into 1mm oc carbon without a
problem, but 3mm of balsa is to the upper edge of it's capacity. The rpm
decreases, and current increases, until thermal cut of the transformer is
activated. Then I have to let the thing cool for a while. But short of
that, the setup is nice for cutting balsa also, as the "sanded" edges of
the cut seem to be less cruched than when cut with a blade. Good for
cutting indoor wood. And the setup is perfect for cutting vertical grain
fillings for the wing spars!
I do not cut cap strips with the setup, as for several years I've made the
ribs another way: I carve the rib stack from one solid piece of wood,
laminate the caps to both top and bottom, and once the epoxy is cured, cut
the ribs out of the stack. The circle saw only cuts about 4mm deep, so I
need to cut both top and bottom, but then it's easy to finish the cut with
a sharp knife along the caps. The reason for doing this was that caps
cyanoed to the ribs tended to weaken or pop off when the covering was
attached with iron (I use plastics). Caps glued/laminated with epoxy are
not harmed by the covering process.
HTH,
-Tapio-
Payola for Hines
aka : Re Ken Bauer's ZAP DT in SEN 6Sept99
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Most interested in what Ken is doing(and who else?) with EE pushbutton
DT device. An obvious time to use it
would be if you let go your F1A (or F1H) glider with towline attached!
An attempt would be used, but it would
quickly land, instead of thermaling OOS, like some guilty parties,who
shall not be named(I hope).
Looks like I'm a candidate for an EE timer and ZAP DT!
Still searching; My kingdom for an Ultralite!
LEE
[The rules do not currently permit a ZAP D/T in F1A but an electronic
timer solves the dropped/broken towline problems as most [all ?] have
tow watchdog timer. This timer runs all the time and requires
that the hook come forward every XX seconds, if not is will d/t.
In the BlackMagic timer the XX can be set to your personal preference
between 0 and 255 seconds. Most sportsmen use about a minute. You can
also select time before d/t or some other action. The most common action is
to d/t right away]
[ Lee - tell you what, I'll give you a BlackMagic Electronic F1A Timer
so you can write about it for NFFS Magazine [in your capacity as
Glider editor]. Your buddies. Zink, Parker, Bauer , Coussens, Cowley and even
the conservative Weiler are using someones electronic device - Only Pierre is a
windup guy like you. [ And I didn't go into details on why you didn't
get the 5 min flyoff time with Martyn last Saturday]
B.O.M.
======
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Hi Roger,
It seems that with all of the discussion about B.O.M., vs other
sportsmen, one thing has been missed.
Those who provide the ready built equipment with high performance, have
spent many hours of research, and loads of rubber and other supplies
just getting the designs developed. They generally are not doing this
with the idea of selling models, rather, for the sheer pleasure in
winning with their own creations. Sure those that "buy" enjoy the flying
and sometimes winning, and that's O.K..
They have just missed the pleasure of a creating their own flying
machine and seeing it win.
A great load of thanks should go out to those that provide the
equipment, and know why it works.
Rex Hinson
[Rex
No, I think the recent correspondence is dealing with two sligtly
different aspects that we have not dealt with before.
The first is letting a sportsman claim credit [with pride] that he
built his model.
The second is as you suggest, giving credit to the 'professional
sportsman' or builder who made the model, or perhaps part of it
in other cases.
I fly F1Bs that come from Igor Vivchar and these models, one in particular
have given me much pleasure. I know also that Igor is happy when one of
his customers does well. By the same score I also use one of your torgue
meters, which I like. While it does not claim as much attention
as the model I'm sure you're happy when you see a a number of them
in use at a competition.
I think Pym's idea of some how documenting this is the results is very good.]
Looking in Switzerland
======================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
I have a 15 year old grand nephew in Zurich, Switzerland who is getting
interested in modeling. Is there a FF club near there.? Is there any Swiss
association like the AMA ?---Don Ross
Bob Mattes - Saw Blades
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
As the Tool and Shop Supplies Buyer at Lockheed Martin Skunk Works, I have
bought many specialty saw blades (both Band and Circular) over the last 17
years.
The best source I have found for information and custom blades is:
Daily Saw Service
4481 Firestone Boulevard
South Gate, CA 90280
Phone: (323) 564-1791
Fax: (323) 564-9325
Contact: Tim Rief
(Tell him Lorna from Lockheed sent you!)
Hope this is helpful. If anyone else has any questions or is looking for
any tools or supplies, I'd be glad to help anyway I can........including
suppling them to you...........I also have access to the complete line of
OLFA products and can provide them to you at a price below cost (depending
on the item and quantity required) plus local sales tax and any applicable
shipping costs.
Lorna Tilson
(Bob Wiehle's daughter)
Reply to Achterberg
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Reply to M. Achterberg.
1- When I say "market models", it's clear that I am talking about Ready to
Fly models, not parts.
Almost all of us work with some purchased parts. My F1C's have Ukranian
engines / motor mount and Danish timers (sorry Roger).
2- If you believe that allowing RTF models to compete is useful to promote
the sport. O.K, it's your idea and may be that you are right. Or may be
not. It's open to debate.
3-Such debate should be driven in a civilizated way, understanding that
nobody owns the truth and excluding, of course, offensive language.
Regards
Daniel Iele
50 years ago
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Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
I stumbled onto your interesting web site recently and it brought to mind
free flight modeling I did 50 years ago. We built small microfilm gliders
with 6 to 10 inch wing spans and glued horse flies to the nose for power.
When turned loose in a school gym they would stay airborne for 15 to 30
minutes. Does anyone build microfilm models today? Could someone put me in
touch with any microfilm modelers ?
Ben Ellison
This email address is being protected from spambots. You need JavaScript enabled to view it.
[Ben - Indoor flying is alive and well -
What area do you live in ?]
.....................
Roger Morrell
