President Greg Galler Treasurer Tony Boothman
Vice President Roy Bourke Field Coordinator Mike Thomas
Secretary Helmut Berger Contest Coordinator Doug Pike
Safety Jack Nunn Newsletter Roy Bourke
Web Site http://www.cogg.ca
receiving this newsletter. Again, at the AGM in
The 2007 Flying Season November, a motion was passed to post a list of
names of current COGG members at the field, so you
Well the spring has finally sprung, the field is open, will know who should or shouldn’t be there. If you
and the 2007 flying season is finally here! So let us are in contact with any previous members who
just review some of the things that we need to haven’t renewed yet, please remind them to get their
remember before we all converge on the field. (Some membership renewal in as soon as possible.
of these may be a little different from previous years.)
This newsletter includes a list of names and contact
1. Yes, the field is open, but there is still a lot of information of the COGG members that are current at
moisture in the ground. If unthinking people just go time of publication.
tromping around on damp sod, the footprints will be
permanently formed into the sod and the club will 4. “Letsgofly” Network.
hear about it! At the moment we have been asked to We have a little club communication network
confine our flying activities to the area south of the operating now to help us get together for informal
parking area. The fields to the north and east could flying sessions. The members of this network simply
still be damp so please refrain from using those areas post a quick e-mail to the rest of the group if they
until they are thoroughly dry and hard. And NEVER want to see if anyone else wants to fly on any
drive a vehicle of any kind onto the sod. particular nice day, to inform the group that they
Those with Internet access should check the intend to fly on a particular day, to make an
COGG website frequently for any news about field announcement that may be of interest to the group, or
conditions. Later this year we will be moving to perhaps just to stay in touch.
another field, so watch the website frequently for that
notification. Each member of the network has the e-mail addresses
of all the others, and sets up a group mailing address
2. At the AGM last November, a motion was passed in his e-mail program. And any time a network
that requires all members and guests flying at the member replies to a posting, he sends the reply to the
field to display their current MAAC membership group address, so everyone in the network is
cards, or good copies thereof, while flying. We will informed of what is happening.
also be recording MAAC membership verifications
on the membership database as we did last year. If you want to become part of this communication
network, simply dash off e-mail to me, and I’ll see
3. You need to be a COGG member or a guest to fly that everyone in the network gets your name and e-
at the COGG field. There are still a small number of mail address to add to his group list.
previous members who have not yet renewed their
COGG membership for 2007, and they will not be Roy Bourke, email@example.com
Contest Time How to Fly
Club contests start to happen in May, so here is the
Every Day of the Year
list of COGG’s and SOGGI’s contests this year.
By Mike Thomas
Contest Date Location To those members who have Internet access,
2 Meter Sun May 27 COGG just query “Picooz” in your browser and you will
E- Sport Sailplane Sun June 3 COGG find many pages of discussion, details, pictures,
Golden Oldies June 16 (rain 17th) SOGGI videos (YouTube) etc and can find out about the
Open Man on Man Sun June 24 COGG latest craze in toys … I mean model planes. A
Open Sailplane Sun July 8 COGG visit to the local Wal-Mart and at a cost of about
2 Meter &Open Sun Aug 5 SOGGI $30, will provide unlimited fun – especially on
Hand Launch Sat Aug 18 COGG
those cold windy winter days.
RES Sun Aug19 COGG
Open Sailplane Sun Aug 19 COGG
Big Bird Open&RES Sept 2 (rain 3rd) SOGGI This little toy – sorry – model, measures a mere
E-Sport Sailplane Sun Sept 9 COGG 7” long and weighs only 10 grams complete and
Open Sailplane Sun Sept 16 COGG ready to fly, and comes with a transmitter and
charger. The power for this model Helicopter is
Rules for the E-Sport Sailplane events are unchanged via the latest technology, 50 mAh LiPo battery.
from last year and are included in this newsletter. Plug in the model to the charger and 15 minutes
later you’ll be ready for flight.
R/C Sailplane Committee
For several years now, the R/C Sailplane
disciplines have been represented in two special
interest committees in MAAC, the R/C Sailplane
Committee and the R/C Scale Sailplane
Committee. The Scale Sailplane Committee has
been operating under the regular and able
chairmanship of Stan Shaw. However the R/C
Sailplane Committee in recent years has had
problems in maintaining a willing and consistent
chairmanship. A committee that fails to present
an annual report to the Board of Directors of I fly in the bedroom because the bed makes a
MAAC two years in a row must be disbanded. nice soft landing for any occasional error in
flying skills. The flight, unless the model hits the
To solve the problem on a temporary basis at cabinets, windowsill or the pilot, lasts 5 or 6
least, the two committees recently have been minutes. The only real goal is to complete the
combined under a single chairman, Stan Shaw, total flight with no touch of solid objects – not as
with the current memberships of both easy as it sounds!
committees retained. This is a special situation
since, normally, committee membership is
limited to two members from each zone.
Next year, unless a chairman is found to chair
the separate Sailplane Committee, this situation
may change. It is likely that a combined
committee may have to be reduced in size to
comply with the two-member-per-zone policy for
MAAC Special Interest Groups.
The Picooz is made from rubbery foam, which is Fusing Brushless Motors
almost totally indestructible – no pieces break
away no matter how hard it hits. The only
vulnerable part of the model is the small tail rotor
which is made of quite thin moulded plastic,
Section 6.1 of the MAAC Safety Code
however, “just in case”, a spare tail rotor is
recommends that all electric aircraft be properly
included in the box! The tail boom and
fused “between the motor and the first connector
rudderpost are rectangular carbon fibre – will
when using a BEC system. Units that have
never break. Wal-Mart always seems to be sold
separate power to the radio may prefer to fuse
out of the “Silverlit” Picooz (Wal-Mart Part
between the battery and the connector.” This
#86515), but happily there is an alternative with
regulation is currently under review and will
the “Air Hogs” Havoc Heli, which is made by
likely be amended somewhat in future revisions
the same company and is identical in all aspects.
of the Safety Code
The “Air Hogs” Havoc Heli can also be found at
Toys R Us – not implying that this is by any
Obviously the original regulation was drafted
means a “toy”!
without too much regard for the newer brushless
motor types because, how do you fuse a 3-phase
So that is how I feed the “flying addiction”
motor/controller system?? Putting a single fuse
during the winter snow and wind – at least one
in one of the 3 lines to the motor just doesn’t cut
flight every day so far this year. Give it a try…you
might just find it addictive as well!
it!! Blowing a single fuse will disable two of the
phases, but the motor will still run, or try to run,
on the remaining phase. And putting a fuse in all
Post Script Roy Bourke
three lines wouldn’t cut all power to the motor
unless two of the fuses blew simultaneously.
I have to agree with Mike about the addictive One could of course fuse one of the power lines
nature of these little helicopters because I, like from the battery to the speed controller but this
many of the flyers that fly Indoor R/C at the should not be done unless the radio receiver has
Markham Indoor Group, have also become its own separate battery, because blowing this
addicted. I haven’t flown my helicopter in the fuse will disable a BEC system in the speed
bedroom every day as Mike has, but have flown controller.
it regularly at Indoor flying sessions each week.
Fortunately, most electronic speed controllers
If you look up the threads on RC Groups on already have some form of fusing, either a
these little helicopters, you will find that we are thermal cut-off or over-current protection. Castle
not alone in our addictions. In fact the mini-heli Creations, and possibly some other ESC
craze is worldwide. And many have re-designed suppliers go one step further and give the user a
the little helicopters by removing the moulded bit of programming control over the sensitivity of
plastic body and substituted their own version of this over current cut-off, but not much control of
a custom helicopter body. This aspect of the the level itself. The cut-off level for over-current
mini-heli craze appealed to me, so here is what is usually based on the normal current rating of
my own Picooz helicopter looks like now. the controller, and most controllers are designed
to allow a temporary surge of current over the
rated current draw for continuous operation.
(For example, the Phoenix 80 controller will pass
80 Amps continuous and 120 Amps surge).
So if we are using a BEC, essentially we are
relying on the speed controller to provide us with
this safety fusing. But just as we must carefully
select an appropriate fuse size for a brushed
motor, we need to select an appropriate LAWYERS !!!
controller size for a brushless motor. Yes, an
80A speed controller will control the speed of a These things people actually said in court, word for
motor that is designed to run on a maximum of word, published by court reporters
25 Amps. But what if a short develops in that
motor, or if something stops the prop from ATTORNEY: Are you sexually active?
WITNESS: No, I just lie there.
turning and/or the motor shaft locks up while the
speed controller is calling for maximum speed
(after a crash for example)? How much current ATTORNEY: What is your date of birth?
will the motor draw? Probably a high enough WITNESS: July 18th.
level to blow the motor, and maybe even a high ATTORNEY: What year?
enough level to cause the LiPo battery pack to WITNESS: Every year.
(Have you ever seen one explode? Check out the
videos at http://www.utahflyers.org). But the ATTORNEY: What was the first thing your
80A speed controller won’t cut power until the husband said to you that morning?
current level is well above 120 Amps !! WITNESS: He said, "Where am I, Cathy?"
ATTORNEY: And why did that upset you?
WITNESS: My name is Susan.
So, if you are using a controller with BEC, this ______________________________________
just underlines the importance of matching the
size of a speed controller to the current capability ATTORNEY: The youngest son, the twenty-one-
of the motor. Admittedly it is tempting to use a year-old, how old is he?
larger speed controller than is needed, to make WITNESS: Uh, he's twenty-one.
sure that the speed controller stays cool and is _______________________________________
never overloaded, and may be useful for a larger
motor in a future aircraft. But the downside is ATTORNEY: Were you present when your picture
that you may be creating a potentially dangerous was taken?
over-fused and under-protected condition for the WITNESS: Would you repeat the question?
rest of the power system.
ATTORNEY: So the date of conception (of the
If you do insist on using an oversized controller, baby) was August 8th?
the safest way is to appropriately fuse the battery WITNESS: Yes.
line to the controller and install separate power ATTORNEY: And what were you doing at that
for the receiver and servos. In fact, using a time?
separate receiver battery and a separate fuse and WITNESS: Uh....
arming switch for the ESC is not a bad idea for ______________________________________
any motor/speed controller combination. It
allows you to test controls or range check before ATTORNEY: She had three children, right?
you arm the motor, so there is no danger of the WITNESS: Yes.
ATTORNEY: How many were boys?
motor starting up accidentally. And for aircraft
types such as sailplanes that fly for a long time ATTORNEY: Were there any girls?
after the motor runs out of power, you don’t have ______________________________________
to worry about running low on radio power from
the BEC. A two-bladed automotive fuse, sold at WITNESS: The autopsy started around 8:30.
auto parts stores, can serve nicely as both a ATTORNEY: And Mr. Denton was dead at the time?
drive-system arming switch as well as a fuse. WITNESS: No, he was sitting on the table
wondering why I was doing an autopsy on him!
\__________( )__________/ __|__
CENTRAL ONTARIO GLIDER GROUP (COGG) APPLICATION FOR 2007 MEMBERSHIP
Name (Please print) ______________________________________________________________________
Address ____________________________________________ City________________________________
Province/State__________________Postal/Zip _______________Telephone ________________________
E-Mail _______________________________________ MAAC No._______________ LSF No.__________ Level ______
Transmitter frequencies used: Please send my Gull newsletters by Canada Post
1)___________ 2)__________3)_________4)___________ E-mail:
Full Membership $25.00 Please send completed form and payment to:
Senior (65 and over) $20.00 Tony Boothman
Junior (under 18) First year free 239 Dodson Road
(second year under 18) $10.00 Barrie, ON, L4N 4N5
Amount enclosed _________________
Cheque Money Order Other (Please do not send cash by mail)
I will abide by the bylaws of COGG, and fly my models in accordance with the M.A.A.C. Safety Code:
Signature __________________________________________ Date _____________________________
SPORT ELECTRIC SAILPLANE and
1/2A SPORT ELECTRIC SAILPLANE
Contests: Sunday 3 June and Sunday 9 September 10:00 AM to 3:00 PM
Entry Fee $3:00 per entry All Entry Fees will be returned as cash prizes
A contestant may enter any number of aircraft in either class, and can re-enter the same aircraft* any
number of times in the same event, but shall not be awarded more than 1 prize in each class. However two
contestants may not enter and fly the same aircraft. And only one aircraft may be flown in each entry.
(*All official flights must be flown, or remaining attempts relinquished before an aircraft can be re-entered in the
Any aircraft with a wing span of 100” or less
Only rudder, elevator, spoilers and throttle control are allowed (* Note 1)
(Flaps do not qualify as spoilers. Aircraft with flaps must have the flaps disabled)
No more than 8 battery cells, NiCd or NiMhy. (or 3 Lithium-Polymer cells) (** Note 2).
Gearing and folding propellers are allowed.
For the Sport Electric Sailplane class, any motor may be used.
For the 1/2A Sport Electric Sailplane class, motor must be a 400-sized “can” motor. (Speed 400 or RS-380 types.
No brushless or cobalt types, or stock can motors custom modified for enhanced performance.)
Motor run time is 2 minutes (120 sec). The motor may be stopped and re-started any time within the first 2 minutes
of the flight. After this initial 2-minute “climb window”, running the motor will result in zero-points for that flight.
(Note: an accidental “blip” of the motor may be tolerated provided it is less than 1 second in duration and provides
no advantage to the flight.)
For each entry three attempts shall be allowed for 3 official flights. Final score is the sum of the score for the 3
flights. The official flights may be made at any time during the hours of the contest.
Maximum flight time is 10 minutes (600 sec. which includes the 120 sec. motor run), unless a shorter time is set by
the CD at the beginning of the contest. A flight is scored with 1 point per second of the flight time up to the
maximum time, after which 1 point is deducted for each second in excess of the max.
Bonus spot landing points are added to the flight score if the aircraft lands within a designated spot landing area,
and is still in good flying condition immediately after landing. 30 bonus points will be awarded if any part of the
aircraft is within 10’ of the designated spot, 15 bonus points if within 20’ of the spot.
A landing beyond designated field boundaries will result in a zero score for that flight.
In the event of a tie final score, the CD will determine the terms of a flyoff round.
*Note 1 At the discretion of the CD, an aircraft that depends on ailerons for its direction control and roll stability may be
allowed to compete provided that the ailerons operate only as ailerons, and not as spoilerons, flaperons, nor trim for variable
camber of the wing.
**Note 2 If LiPoly cells are used, aircraft must have a minimum wing loading of 8oz./sq.ft)
Contest Director: - Roy Bourke, MAAC 204L, 416-493-0111, firstname.lastname@example.org