2008_0708 1413 Kb - South Eastern Model Aircraft Club

Newsletter Of The South Eastern Model Aircraft Club Inc # 4
SEMAC – Some recent club views... Look how much green there is in sight
Dear Members, RAMBLINGS FROM RON
I have been requested by our Editor to keep my
ramblings to a minimum (wise man) as he has run out of
space in what should be a bulging newsletter. Ok, as
you are no doubt aware our August meeting is our AGM
and I ask that as many members as possible make the
effort to come along. Even if you don’t get to general
meetings or the field often come to the AGM and catch
up with old friends and have input into the future of your
club.
Once the business of the night is out of the way we plan
to have some fun and have another indoor glider comp
run under the same rules as last year.
These are the Challenges.
Distance Challenge Duration Challenge -
Longest straight line glide from a
predetermined height.
Longest time in the air from a
predetermined height.
I think I have used up my allotted space so will talk more
about club activities both past and future at the AGMhope to see you there.
Hello friends and colleagues.
I must tell you that a few weeks ago I was worried that I
don’t have enough material to fill up the standard 12
page format. BUT, with the help of many of you, I
managed to collect so much, that some of it now will
have to go into the next cycle.
I am still unhappy as to the ratio of those that receive it
by Snail-MAIL (Make Australia Post rich) vs. those that
opted for the e-mail version. To add your name into that
list, please e-mail me at [email protected], I will
make sure our central members’ database is also kept
up-2-date.
Model Design:
Can be built from any material.
No catapult or slingshot system will be allowed.
In plan, model must fit within the size of an A4 sheet
of paper.
Paper planes will be accepted and paper will be
available on the night.
A different model for each challenge will be allowed.
All other rules will be made up on the night
Cheating is allowed provided it goes undetected.
Judges decision is final even if biased or incorrect.
So get to and put your aerodynamic skills to the test and
build a winning model.
SEMAC News
July - August 2008
One last thing, this year we are having a key change so
please bring along your gate key to the AGM and swap
it for a the new one. The rule will be no old key no new
key- were tough but fair. Good time to pay your subs as
well if you haven’t already.
-1-
In this edition –
-
Hyperion Yak 54
Cowl Fitting Made Easy
Space Walker
SEMAC – Members’ list
My Solo License
1/4 scale Fokker D7
Piper J-3 Cub, Part 2
A brief update…
Page 2
Page 3
Page 4
Page 5
Page 6
Page 8
Page 9
Page 11
Hyperion Yak 54 - 40 electric size kit - by Jed Bayston.
As a fairly new member of SEMAC, I have been ‘quietly’
(sorry Shorty!) pursuing my interest in electric flight and at
the same time trying my hand in the new area of Petrol
powered 26cc gas models. I must admit to being pretty
much addicted to both for different reasons.
The models flying qualities are very good and it has a
nimble feel to it on high rates whilst being very easy to
land at slow speeds.
The ‘gassers’ are just so cheap to run and reliable…and
yes, they also sound good, while the electric stuff has just
become so affordable and powerful with motors, batteries
and speed controls from China providing massive ‘bang
for the buck’.
My latest project is a Yak 54 from Hyperion. It has a 49
inch wingspan and weighs about 2.3 kilos all up. The
model is powered by a $27 brushless motor that runs a
13x6.5 APC prop on 5, 3300mah cells giving me 8700 rpm
at 51 amps while producing 870 watts of power.
I have used about 40% expo on ailerons and elevator. My
servo choice was a mixture of Hitec 225MG’s and one
digital mini servo on the rudder. I opted to use one servo
for the elevator control to save weight.
Any weaknesses in the kit? You bet! The flimsy
undercarriage and soft stringers in the bottom of the fuse
that I always manage to squash when picking up the
model.
I’m not so happy with the squishy canopy moulding either
but it will probably be OK. The models flight performance
is what pleases me the most and the power system looks
to be an absolute bargain.
The motor itself weighs under 6 ounces. The motor is
physically very small and has a KV of 800.Those who saw
the model flying, including our trusty ‘editor in chief’, will
probably agree that it is quite adequately powered! (More
than adequate – ED)
I flew a couple of test flights on a 4 cell pack but it lacked
the sparkle that I was looking for so I would recommend
using a 5 cell pack with this motor. The flight timer on my
radio was set for 10 minutes on all flights, and on the 5 cell
pack, after a full ten minutes I used about 2500-2700
Mah’s out of the 3300 available.
This is achieved by using careful throttle management and
enjoying the slow speed performance of the model as well
as zooming around at ‘full-noise’ occasionally.
The batteries that I am using are two years old and show
no signs of letting up. My approach is to balance charge
using a $25 cell balancer on each pack. If I have a 5 cell
pack made up of a 3 cell and a 2 cell pack in series, I will
use a balancer on each pack every time I charge.
The biggest problem I used to have prior to affordable and
reliable cell balancers becoming available, was that 1 cell
in a pack of 3 would often discharge more than the others
and gradually die leaving me with a useless pack…not any
more!
Enjoy your flying everyone and if you
want more info on anything I am using
ask me next time you see me at the
field.
Cheers, Jed Bayston
SEMAC News
July - August 2008
-2-
Cowl Fitting Made Easy – By John Andrews
ARF models seem to be getting better all the time.
Easy to assemble, great finish and they generally fly
well straight out of the box. As a neat finishing touch,
these days they often come complete with a nice
fibreglass or ABS plastic cowl.
5. Position your ruler along each masking tape line
and mark the cowl at the previously measured
distance. In this case, 120mm from the reference
mark to the needle valve position.
6. Remove the cowl and drill your holes. I like to drill
small pilot holes first then refit the cowl just to make
sure they’re in the right position.
When it comes to fitting the cowl, you’re left with pretty
much just two options. Take a wild guess at where the
required cut outs and holes are meant to go, or take a
few minutes to set it up and measure them out.
The first method can end up rather messy, while the
one I’ve described below gives a good result in no
time at all.
I’ve shown here how it’s used to set out the mixture
needle access and cowl mounting holes, but it works
for the engine cylinder and exhaust cut outs just as
well.
1. With the engine in place, run a strip of masking
tape along the fuselage adjacent to each hole
position. While budget masking tape doesn’t stick
to the plastic covering all that well, the slightly
higher priced green stuff from Kmart works fine.
2. Use a ruler to draw a line from each hole position
back along its strip of masking tape.
3. Put a reference mark on the tape and write next to
it the distance from the required hole position.
4. Fit the cowl and hold it in position with masking
tape.
Happy flying, John Andrews
To all SEMAC Members
Fred Barabasz of Hallam Hobbies Invites all for a FREE Sausage
Sizzle on the first Saturday of every month to all members and
family of SEMAC starting 5Th July at about 12:30 pm.
SEMAC News
July - August 2008
-3-
Space Walker – by Ron Hayes
As a kid I used to fly control line occasionally with Graeme
Wilson at an oval in Highett (Graeme is still very active in
C/L). Then, when in my early 20's a work mate introduced
me to R/C flying and I was hooked. We both joined
PARC's and I flew for about 15 years.
Due to other interests, family etc, I stopped flying for about
10 years. Then one day last year Steve, my son, bought a
Classic 40 trainer home, I couldn't believe it when he said
it only cost $69.00.
After installing the gear, running in the engine, and test
flying, I was very happy with the end result. She flies
nicely and looks good in the air and on the ground. I often
get favorable comments about its looks from other flyers.
The highlight of flying the Space Walker was flying it in the
recent SEMAC Warbirds and Scale display day.
He built the plane got a Tiger Shark 46 engine and a Hi
Tec optic 6 radio. His mate Daniel Farrell was a past
member of SEMAC so they both decided to join in approx
July 2007. Of course all this R/C activity at home was
getting me sucked in again so I joined SEMAC about 2
months after Steve joined. Steve and I both got our Solo
ratings on the Classic 40.
So, what plane will I get for myself ?.After checking out the
local Hobby shops I decided on a Seagull ARF Space
Walker from Hallam Hobbies.
I was impressed with the quality of this kit and it went
together well. I needed an engine and radio, so it was off
to Addies Hobbies where I decided on a OS FL70 4
stroke engine and Hi Tec Optic 6 radio.
The 2nd half of the story…
Some
sad
and
happy
news..
Last Saturday morning 24th May at approx 10am I took off
towards the west for the first flight of the day with the
Space Walker.
Doing a left hand circuit I was over the entrance gate to
the field when I got a massive glitch. At first the plane went
straight ahead while trying to turn left, then it went left and
locked in to a left turn and went full throttle into the ground
totally trashing the front half of the fuz and wings.
Unfortunately I didn't have a lot of height. When I got to
the model the radio was working ok. The Engine and
Radio all seem to be ok.
But it was a sad moment to see my nice Space Walker in
pieces. Interestingly, another club member flying electric
models was getting glitches in the same area, before and
after my crash.
However, we must move on, so I have included some
photos of my new Edge 540 (Seagull ARF kit) Which I
started building on Monday night doing a bit each night
after work and finished it on Saturday afternoon 31 May, a
week after the death of the Space Walker.
SEMAC News
July - August 2008
-4-
The Edge is now ready to go for its maiden flight. I was
going to do this on Sunday morning 1st June but Heavy
fog prevented this from happening.
Steve has almost finished building a Twister (Black Horse
ARF kit) .32 to .40 size Sport Pylon plane. He has put a
Tiger Shark .46 in it so it should go like the clappers. We
might have to maiden the Edge and the Twister on the
same day now.
SEMAC Members’ List
The following list shows the names and contact details of members who have given permission to publish those details.
Please use it as intended – it is to be shared with SEMAC users only, and not be abused or published without written
permission, nor is it intended for use as a Mailing list for advertising material.
It is intended ONLY for members to be able to make contact with other members on a one-to-one basis.
Surname
Firstname
e-Mail Address
Agius
Andrews
Apostolou
Armstrong
Armstrong
Barabasz
Barfoot
Mario
John
John
Christopher
Mark
Fred
Paul
[email protected]
[email protected]
[email protected]
Bayston
Blackie
Blight
Bruin
Byrnes
Cartwright
Clipstone
Curtis
James
Lindsay
Michael
Robert
Lawrie
Ian
Rod
Gary
[email protected]
Davenport
Dzesa
Elsmore
Evans
Farrall
Fiddes
Firmin
Gibbs
Adrian
Paul
Gordon
Alex
Daniel
Cliff
Gregory
David
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
9799 1532
[email protected]
[email protected]
5987 0572
Goff
Gray
Gray
Hampson
Harrison
Hayes
Hayes
Hayes
Andrew
Keith
Mark
Adolf
Peter
Maxwell
Ron
Steven
[email protected]
9899 5632
9528 2324
Hewish
Hunter
Ireland
Kennelly
Maplestone
Matthews
May
McGavin
Gregory
Ian
Ted
Kevin
Bruce
Jason
Robert
Alan
[email protected]
[email protected]
[email protected]
Neil
Bruce
SEMAC News
July - August 2008
Home-Phone
Work-Phone
Mobile-Phone
0417 123426
0407 364390
0419 895169
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9705 6342
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9557 2084
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0403 350694
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Nguyen
Paine
Pfeil
Pluis
Porter
Puehl
Sachse
Shannon
Vu
Ronald
Bob
Peter
Sean
Roger
Travis
Michael
[email protected]
Short
Sivyer
Sneddon
Stephan
Stevenson
Stevenson
Stolinski
Thompson
Peter
Mark
Glenn
David
Graham
Grant
Richard
Stephen
[email protected]
Turner
Vigilante
Ward
Wheeler
Wilkinson
Wilson
Wright
Michael
Michael
David
David
Ray
John
Peter
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9769 9462
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9700 0785
8790 1668
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9772 3768
DEAR MEMBERS – This is a gentle
reminder…. (Pointed out by our friend
Colin)
When you come down to the field to
fly, or just catch up with friends –
PLEASE, take home with you whatever
rubbish you may have, chocolate
warping, and orange peel, or egg
shells you may have after cocking
breakfast.
Otherwise, it makes it an extra task for
“Someone” to regularly take the
rubbish and empty it for you and this
is unfair!
SEMAC News
July - August 2008
0409 085377
0407 822412
0414 646675
0425 844132
-6-
Many Thanks to Mrs Vandersluys, who once
again made for us yet another nice and very
effective wind-sock…
I got my solo on the 1st of June .I would like to thank
all the people in the club for helping me to get my
solo licence, special thanks to Rod for being my
teacher in flying, it helped me a lot.
I would like to thank Des for making me the trophy
and I love it.
The first time I came to the club was when I seen
the 2007 opening day and I thought this is not a bad
hobby so I joined the club and started to learn how
to fly and did not take me long to get use to it.
When I had my first crash I was very scared to fly
until I had my confidence back.
In the future I would fly some larger aircraft and may
build some too.
By Sean Porter
A new toy for Daniel Scicluna…
This is a DRI Fokker ARF from Great Planes. It is as you
Can imagine an EP model with a 1050 Kv, 10x5 Prop on
A 3S 1300/mah LiPo running through a 20 A ESC.
AUW is around 650g with a wingspan of just 29.5”.
The maiden flight was a handful, the stub wing was 3.5
degrees out! And even after fixing and twigging it, it is
nor recommended for a beginner pilot.
After the stub wing was fixed to the more appropriate
Incidence, it was much more pleasant to fly, and I enjoyed
watching Daniel do his magic… (ED)
Who said you can’t have fun with a little park flyer?
SEMAC News
July - August 2008
-7-
1/4 scale Gary Allen plans Fokker D7 - By Ian Hunter
This is going to be a big, big plane. 1/4 scale D7 spanning
some 88 odd inches. I ordered the plans from Model
Aeroplane News AKA MAN plans.
There are several A0 sheets and a print out of the
construction article from Feb 1998 (if anyone has
a copy, I'd like to scan it). Construction is entirely
'traditional'. After searching the web for where I might
procure a partial kit, Dave Brown in Sydney also known as
'Model Draughting Services' produces such a kit. This was
duly ordered and work has commenced.
First starting point was to acquire timber for the fuselage
stringers and the wing main spars. The plans call for 1/4
inch sq. spruce and 1/2 x 1/4 spruce. This timber is not
readily available in Australia. Searching the internet I
found a document released by CASA in 1944 stating Hoop
Pine was an acceptable substitute where Sitka Spruce
was called for.
Hoop Pine is a native of Queensland. It is 10% stronger
than Sitka Spruce, but also slightly heavier.
I found 'Mathews Timber' in Rookes Road Vermont. They
can supply both Sitka Spruce as well as Hoop pine. After
driving over there (after having a tooth yanked on a sick
day off) I was pointed in the direction of the Sitka Spruce.
Beautiful looking great builders planks.
3 inches thick by about 5 inches wide and several meters
long. They said it was $80 per meter and "how many
meters did I require".
After I picked myself up off the ground . . . . .
Next was to enquire about the Hoop Pine. They had a
fresh delivery of Hoop Pine planks.
SEMAC News
July - August 2008
-8-
These were about 20mm thick and about 200mm wide by
4 meters long. And at only $7.50 per meter.
I naturally bought a whole 4 meter length of it.
Many thanks go to Peter Harrison for his assistance with
using his band saw to cut the main spars and fuze
stringers. This is most definitely a two person operation.
Cutting 90 inch lengths of 1/4 inch sq. and 1/4 x 1/2
sections takes a lot of time and concentration.
Yes we ended up with a couple of 'duds', these were
marked and will be used in areas that short lengths are
used, thus cutting the imperfections out of the equation.
Starting point according to the article is with the fuze. So
the appropriate lengths of 1/4 inch sq. Hoop Pine were cut
to make the stringers as well as some 1/4 inch sq. balsa.
These were glued using white wood glue (PVA) to the
laser-cut cowl sections. After the first fuze side had been
made, food wrap was placed over where the glued areas
were and the second side built right over the first one.
Object being to make 2 identical sides.
That's all for now.
Regards.
Ian H.
Piper J-3 Cub, Part 2 – By Alex Evans
Well… The 2nd wing took only some 15 hours all up (as
opposed to the first one consuming 40 hours of my time)
and I suppose, the 1st you do has some “Design” and
“Thinking” time components to it, whereas the 2nd is just a
copy…
Anyway, once this was done I started working on the
fuselage. This of course was a new challenge. Firstly of
course, I needed to plan the conversion from the intended
.46 IC to electric power, a different place for the motor
mount, which motor will be suitable, where will the main
battery be placed so as to avoid any “Dead Weight” for
C.G balancing, how to make it easy to insert the battery
without the need to open / remove the wing etc…
Here is a photo of how it started.
where I feel it is of benefit, so most places I glue have a
long cure / setting time, and in most cases I need to use
some clamps while the glue sets.
The “Shelf” you can see inside the cockpit is dual purpose.
Underneath will be the resting place for the main battery,
and on top – will be the mounting place for the camera,
but this will only come into play once I maiden this baby
and feel comfortable flying it.
The Rx Battery pack is going to be mounted ahead of the
instrument panel, also on this shelf, so as to have the C.G
as forward as the plans indicate. Usually I would think the
C.G should be between 25-33% for the wings LE, but in
this case it is way forward from this point; we’ll have to see
how she behaves in flight.
The main landing gear is constructed from some piano
wire, with some solder / coper wire around the connection
joints, it looks like this.
The wheels
are part of
the kit, they
are
very
nice
and
soft
and
hopefully
help
take
the
harsh
landings I
am
well
known for…
And another one from the other end… a bit later…
At all times, with the completion of each stage, I keep
weighing her, to know where I am at, and make
adjustments in position of things, like where exactly should
I mount the Tail servos ? How far forward should I build
the try for them? How will the access to them be once the
cover is on etc…
Well… By the time you read this, I am long past the
maiden flight, working on my next project… but this of
course is another story.
So, it is all done, finished – some 220 hours from start to
finish (just in case someone is curious how long it takes).
So, as you can see, there are once again lots of parts, and
the majority need to be cut / shaped out of raw material
and are not coming as pre cut inside the box. I normally
prefer using as little Epoxy glue as possible and only
SEMAC News
July - August 2008
-9-
Following Ron’s advise, I decided (and very happy with
the result) to use for covering some Solartex, and I
decided that there are more than enough YELLOW Cubs
around, and just to be a bit different – mine will be WHITE!
This picture shows
the new toy all
naked, just note the
main landing gear
pants, made of
6mm Balsa inserted
into the piano wire
frame, I thought
when covered it will
look good. It does!
OK, The Big day arrived – Friday morning ANZAC day
2008. The forecast for Sunday looked bad, I asked Pete
and Ian to join me, and we gave it a go.
And, once the fuselage was covered, it looked like the
following picture. This Solartex is just magic, all I used was
a hobby iron, and no heat gun was needed.
By the time I got to the field, there was a steady strong
Northerly, lined her up and she rolled maybe 6-8 meters
before she was in the air. A bit too nose heavy, I will need
to move the battery backwards, and my Ailerons need a
bit of differential – so I am going to take out the Y lead and
run each off a separate channel, I will probably also
consider mixing in a bit of rudder, to help in turns.
The Solartex (in White) weighs at 98 grams per Sq/m – so
you can calculate how much weight is going to be added
based on this. Just be aware – each colour weighs
differently, depending on the pigmentation used.
One of the major issues I had while approaching the end
of this project was with how much work may be required to
put it all together, from the various bits (considering wings,
cabling, wing struts, struts support etc…)
So, I thought – this is a “Small” model right? (77”
wingspan) and I have a BIG truck, so why not try
assembling it, and trying to see if it fits… It does!
She went for a few rounds, and landed gracefully into the
wind. Considering the high wind at the time, she seems to
have enough power for the job, the battery was just worm,
as was the ESC after around 8 minutes flight some of it at
full throttle.. I didn’t want to try anything exotic at this point
as yet…
And some final details:
AUW = 3.2Kg, powered by a 4020-14 Outrunner, with a 14
x 7 prop from a 5S 3700 m/ah provides 2.2 Kg of Static
trust. There is spare power here for me to add in the
camera for some aerial photography… Wing Loading of
17-18 Oz /Sq-f should be easy…
On some subsequent flights (around 20 by the time you
read this) I started gradually getting the hang of this big
bird, there is a regular need to use rudder on take off,
otherwise the torque plays havoc…
That’s all for this time, busy already with my next project.
Cheers – Alex.
SEMAC News
July - August 2008
- 10 -
A brief update – By Mario Agius
No. 1 Recently purchased Decathlon from a general club
meeting ex Ron's hanger, had it airborne the week end
after I took possession of it.
No.2 On my to be finished list is my "Got Gas Sport" which
is now fitted with the same set up as my Giant stick in
terms of power .
I fitted a WT-257 Welbro carby to the 31cc twin ring Ryobi,
pits muffler and turning a 16 X 12 prop this has turned out
to be a great combination, it’s ready to fly just needs a
receiver and battery, should perform like my Giant stick
which is performing very well, it's become my favorite
regular Sunday flyer, it now has over thirty five flights on it
as of the end of June, I have a great time flying my giant
stick.
I think larger scale planes fly better and safer than smaller
planes, also I find them easier to land also very cheap to
run considering the price of petrol!! I’m moving away from
glow engines, just my preference…
I fitted a G-51 Super Tiger but I needed a pits muffler to fit
it, there was no way to fit the large muffler the G-51 come
with so I located one at Roj's Hobbies which I purchased
just before the week end, cost me more than the plane it
self but it was almost done and I wanted to fly it and apart
from the muffler all it needed was a bigger fuel tank,
painted the cowl to match the fuselage added some black
pin stripe and a throttle servo and it was done.
No.3 Also recently purchased a 25% Edge 540T and a
26cc CRRC pro engine, should make a great combination.
I have spent a lot of time in the past year building three
planes from scratch and decided to buy an “ARF” which in
my opinion not as good as a scratch build planes in terms
of strength but are very light and precisely made thanks to
laser cutting, they also look very good- sure saves a lot
time and work. I haven’t given up on building just taking a
rest from it.
Took it to the field Sunday morning and had two good
flights with out any problems, it's great to bring back to life
an unwanted model - thanks Ron.
I’ve come a long way into the hobby in just over a year
and a half since I started flying, have now been a club
member at SEMAC for one year - meet some great people
and I know I will be a club member for a long time to come
thank you SEMAC and all the great people...
Safe flying, Mario
If you don’t watch it…. They multiply fast!
SEMAC News
July - August 2008
- 11 -
Don’t forget the next SEMAC General
Meeting.
5th August 2008 – 8.00 PM
Many thanks to John, Sean, Mario, Ian, Jad and
Ron for their contributions to the SEMAC News.
If you fancy joining them next time, we’d really
welcome your:
DINGLEY COMMUNITY HALL
MARCUS RD DINGLEY
Also…
Our treasurer will bring the NEW SEMAC Keys,
please bring along your old key to be swapped, and
if you lost it, it will cost you $5 to obtain a
replacement key.
Don’t forget to bring your SEMAC Name Badge, so that
we get to know each other better
construction articles or
photographs
tales of your modelling
or flying experiences –
happy or sad
Email or disk is the ONLY acceptable submission
format.
Please contact Alex Evans via:
[email protected]
for more details if you are interested.
COMMITTEE
South Eastern Model Aircraft Club Inc
President
Ron Paine
Vice President
Daniel Scicluna
Secretary/Public Officer
David Stephan
Treasurer
Peter Short
9700 0785
Committee Members:
Rod Clipstone
9769 9462
9802 4216
PO Box 64
Dingley
Vic
3I72
http://members.optusnet.com.au/~semac/
Bob Pheil
SEMAC News
July - August 2008
tips and advice
gossip
advertisements
Des Townsend
9701 8035 / 0428 120 931
Mark Sivyer
0412 054 492
Colin Vandersluys
9589 0729
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