SCAT Electronic News 15 June 2001 issue 588
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- Category: Archive 2001
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SCAT Electronic News 15 June 2001 issue 588
Table of Contents
=================
Southwest FAI Challenge - Zeisloft
SCAT Web Site - Crowley
John Pond (and other West Coasters) - Terzian and Roselle
Texas Surprise - Hines
More on hot boxes - Pennington
Message for Whining Willie ( Geiskieng ) - Brokenspar
Fwd: FAI RUBBER, ACCOMOD. - Clapp, Laird and Plocins
Plan Book - Norton
Heat cure - Ackery
Graupner servo - Barron
Typo - Andressen
Easy Epoxy Curing Oven - Mattes
Heat box - Gewain
Southwest FAI Challenge
=======================
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Roger,
I have had several phone calls this past month (including one delightful
call from John Malkin in New Zealand), regarding confusion of the dates
for the Southwest FAI Challenge. If you would, please post on the SEN
that October 27 and 28, 2001, are the correct dates of the 6th annual
Southwest FAI Challenge. This is a shift from late September, to better
accommodate the likely FAI participants at Eldorado. I will have a
detailed contest announcement finished soon, and will forward to you.
Thanks,
SCAT Web Site
=============
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Roger,is the SCAT Home site still on line?
Paul Crowley
[ Yes at www.aeromodel.com/scat]
John Pond (and other West Coasters)
===================================
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Besides the recent losses of Steve Geraghty and Teen Becksted, we have lost
another giant here on the West Coast.
Following is a brief note from Steve Roselle:
To all SAM aficionados,
Tonight I got a phone call from Bob Von Konsky ( a longtime friend of
John's).
Bob had just received a call from Allen Pond (John's son), who said that
John Pond passed away quietly in his sleep on Monday night June 11, 2001 at
8:30pm.
John had been shuttled between the hospital and the Mt. Pleasant Center
recently with pneumonia and other ailments and his quality of life has been
pretty sad for quite a while now. Bob had been visiting him regularly and
reported that John hadn't been able to communicate for the last several
visits.
No details of memorials or services have been made available at this time,
but Bob is in contact with the family and will let us know when he finds
out.
So, another SAM legend passes into the history books. John's life was SAM
for as many years as I had known him. What SAM is today is due in large
part to John's tireless efforts to spread the word (and of course, the
plans) of the Old Timer movement.
Please join me in a moment of silence to wish our comrade well on that
final journey to where the eagles soar.
Steve Roselle
Western VP
Society of Antique Modelers
Texas Surprise
==============
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Just returned from the Texas Cloud Climbers FF Champs.
I must say the thermal gods smiled on me, as I won all
4 glider events.
I am especially pleased to accept the newly dedicated
Don Chancey Memorial Trophy, given for 1st in F1A.
I thought of him and his good friends in the FF world
as I thanked the good folks of the Cloud Climbers for
running a fine contest(fine weather, too).
Lee Hines
More on hot boxes
=================
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Mrs Scat,
In response to Jason's query about hot boxes for the curing of epoxy, I
would like to support the excellent article by Edge/Gregorie concerning
their hot box for epoxy curing. I have made one and can thoroughly
recommend it. Whilst I acknowledge there are other ways of getting hot air
into the box which involve hair dryers and thermostats the Edge/Gregorie set
up used is so cute that I bought the company.
I have found that the electronic display set up which Edge/Gregorie use is
very good and easy to use. I have found that the box quickly comes upto
temperature typically 50 deg C from ambient within 20-25mins. During this
period you can be preparing the epoxy, laying up the cloth, wetting out,
having a cup of coffee, take a shower..
I word of advice do ensure that you have placed the box onto an insulated
polystyrene foam board. The board which I used is 1.5m by 0.75m in size and
40mm thick and came from a builders merchants and is used amazingly as
insulating foam! Failure to use some form of insulation will result in the
garage floor becoming a heat sink and the box will never attain anything
like 50 deg C.
Hope that helps
Julian Pennington
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Message for Whining Willie ( Geiskieng )
=======================================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Original material only, please.
Brokenspar
Fwd: FAI RUBBER, ACCOMOD.
=========================
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
New rubber in large quantity is scheduled for delivery later this coming week.
Testing will take approximately 1 week. You may want to wait until this new
June rubber is tested. There will be enough to go around.
Regards
John Clapp
FAI Model Supply
This email address is being protected from spambots. You need JavaScript enabled to view it. wrote:
> Regarding the attached, I'm checking all sources to try and help with their
> rubber needs, any suggestions?
> John, What is the current status on the next batch as well as availability.
>
> Roger, Do think a "Wanted" request on SEN would yeild any rubber from F1B
> flyers not on the team?
>
> Tom
>
> ------------------------------------------------------------------------
>
> Subject: FAI RUBBER, ACCOMOD.
> Date: Thu, 07 Jun 2001 10:53:41 +0300
> From: Karlis Plocins
> Organization: Latvijas Aeroklubs
> To: This email address is being protected from spambots. You need JavaScript enabled to view it.
>
> Dear Tom,
> Once again I am writing You on behalf of Viktors.In short- he is asking
> for assistance on two matters:
> - he is in serious shortage of rubber; can You find some from 1997(May)
> or 1999(October)stocks - it's proved to be good one; payment guaranteed.
> - reservation of accommodation in Best Inn "Bakersfield" for entry from
> Baltics - at the time being expected entry would be:
> Latvia - 3 ,
> Lithuania - 9,
> Estonia - 3; they are interested to stay in one hotel.
> At least do some investigation.
> Regards,
> Karlis Plocins.
[Note I have often got requests for a particular batch of rubber.
This is generally impossible to satisfy. FAI Model Supply sells out of
all the good batches so there would be no way of them supplying
October 99. Most people who have rubber from a particular batch
do not really want to sell it either .. although those
dates mentioned above are not the best ! ]
Heat cure
=========
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Jason, this idea of a hotbox powered by light bulbs is a total waste of
time. Why this particular version of the concept continues to exist is
beyond me. It takes a lot of work to make, and then you still have
something with a heap of disadvantages. Namely, it works poorly due to
lack of air flow, has hotspots and cool spots, is slow, has no
temperature control, is big and clunky, takes up storage space, and
worst of all it the next time you want to use if for something it likely
will not fit.
So PLEASE forget this failed concept.
To cure epoxy items there are much better and easier ways,
1) In the oven in the kitchen, (no not the microwave, the other oven
+ACE-). This is great for anything that will fit. Such as tailplane
mounts, props (rubber or power), F1B tubes, F1B D boxes, front
fuselages, pylons, cowls etc etc. Remember that if you take out the
racks and other non useable stuff, and go from corner to corner there is
quite a good size in there.
A fan oven is good coz it blows warm air around. If you do not have a
fan oven, and do not want to run the element while your stuff is in
there just turn it on first, get it up to heat, turn off the element and
put your item inside.The oven is well insulated and will retain heat for
plenty of time, by the time it has cooled, it is likely your item will
be cured. How hot ??, we are talking cool in oven terms, in the bottom
of the range, I suggest up to 100'C, subjectively if you
cannot hold you hand in there it is too hot.
And if other people give you strife about using the kitchen oven for
this stuff, well just pull rank on them , our stuff is important +ACE-.
2) the real best method. This is just SO easy, and versatile.
Go to an outdoor shop and for a few +ACQAJA- buy a survival blanket. You
will get several metres of aluminised mylar ( OK maybe it is not exactly
mylar, but close). Use this to cover/enclose the item to be cured, which
can be huge, and can be any shape, it can be on the floor, it can be on
the bench, it can be almost anywhere, the point is that you can leave
the item where it is, in the mound, or vac bag or whatever. You bring
the 'hotbox' to the item, not the other way. Now take a fan heater, on a
low setting, or possibly a hair dryer, and blow warm air in one end.
Enclosed by the blanket it will warm up real quick, (the blanket will of
course need to be held down with a few odd things), you get a positive
airflow, and it is easy to regulate the temp by adjusting the size of
the exit. Poke in a digital thermometer, like the one you use for
thermal detection, and you are away. This will work fine for F1A D
boxes, which is what I suspect you are doing.
So easy. Forget the idea of a rigid box, go for the flexible mylar
blanket and enjoy all the advantages.
Just one more point, I prefer to let the epoxy go off first at room temp
(say 24 hours), and then do a post cure , preferably with the item still
on the mould. Hot epoxy can react in funny ways, and gets really thin
and can move to places you did not plan on, so this method avoids a lot
of problems
cheers
David Ackery
Graupner servo
==============
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Allard,
Very interesting specs on the DS261. In your experience
is it compatible with existing controllers (e.g. Gewain,
Morell, or whatever you are using) where you can simply
swap it with servos you were using before, or do you need
to change the computer program in some way?
If compatibility is not a problem I will want to order
several (perhaps 4 of them). Can you let me know a source
with which to place the order? I will need to have them
mailed to me in Connecticut to possibly install this summer
(as I will not be a Lost Hills until September).
Best Regards,
Andrew Barron
5 Oliver Drive
North Haven, CT 06473
This email address is being protected from spambots. You need JavaScript enabled to view it.
Fax 203-432-0633
Home 203-248-5386 (may call)
[Andrew - the Digital servo is compatible with other R/C servos
so it should work with any timer [including the Black and Red Magic]
that uses a standard R/C Servo.]
Typo
====
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Roger,
Think there was a typo in last SEN.
Said Martyn Cowley was 7th in F1H.
Next you'll be publishing that Sixers beat Lakers in the Staples Center.
We all had depended on SEN for reality.
Keep up the good work,
H
Plan Book
=========
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I would just like to make a comment on the idea of a plan book for the
upcoming World Free Flight Championships. That is an idea whose time has
come and gone. Nowdays, no one designs their own models other than deciding
what manufacturer to use. An idea would be to have the top two
manufacturers in each of the classes F1A, F1B, and F1C submit engineer
quality drawings of their products. Previously, there was an exchange of
design ideas, this is no longer the case.
bob norton
Easy Epoxy Curing Oven
======================
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Don't build an elaborate curing oven just use a large electric hot pad.
They have three heat settings. I usually use the medium setting and
cover the part with the pad. Throw a towel over the whole mess and you
will hold about 140 deg F very nicely.
Another useful item is an electronic cooking thermometer with a
temperature probe on a three foot long braided stainless steel cord.
Unit can be set to sound an alarm at a prescribed temperature and has a
count down timer. They are available at cooking equipment stores and
probably Wal Mart. Cost is somewhere around $15.
The oven will also provide much needed relief for your arm if you fly
HLG and the thermometer is great for grilling a roast or turkey on the
Weber.
Bob Mattes
Heat box
========
Author : This email address is being protected from spambots. You need JavaScript enabled to view it.
Curing epoxy at low temperatures not only slows the cure but also will
greatly reduce the strength on most epoxies.
A heat box for curing epoxy can be very simple. The one I use is a large
cardboard box like a small appliance or a computer is shipped in. The
important part is that you have a thermometer in the box so you know the
temperature and use a heater with a fan so the temperature is uniform over
the part. I have used a small inexpensive space heater with fan for many
years. I reduce the temperature in the box by just partially opening the
top of the box if needed.
Matt Gewain
...................
Roger Morrell
