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Newsletter of Peninsula Channel Commanders January/February 2024
Web Site: http://flypcc.org/ P.O. Box 812, Half Moon Bay, CA 94019
President Dave Mosher 650-255-3266 dmosher@airasys.com
Vice President Mark Heckman 650-580-2225 markheckmab@gmail.com
Secretary David Santana 650-533-0976 Santanahouse@msn.com
Treasurer David Santana 650-533-0976 Santanahouse@msn.com
Webmaster Bruce Crawford 650-560-8860 TwoCrawfords@gmail.com
New Member Chairman Ray Squires
John Bassetto
650-575-4273
650-759-5143
rlsquires@comcast.net
geppetto1@mac.com
Flight Proficiency Chairman Open Looking for it…. TBD
Editor Brian Chan 650-867-8813 pcceditor@gmail.com
What’s Happening ...
Jan/ Feb 2024 Next Meeting: Deferred AMA Chartered Club # 139
Winter is here in California, rain and wind, no snow yet!.
Newsletter of Peninsula Channel Commanders January/February 2024 2
Next Meeting……..
http://www.flypcc.org
Chetcuti Room
Millbrae Library
450 Poplar Avenue, Millbrae, Ca.
January XX , 2022 7:30 p.m.
Dogs are not allowed at PCC flying site. Dogs were
spotted in several occasions on camera. Please inform
the pet owners (if they are not PCC members) that
dogs are not allowed at the flying site for the safety of
the dogs and club members.
No Dogs Allowed @ PCC
PCC Flying Site is a NON SMOKING
Facility. Please do not smoke at the
flying field.
No Trash Service at PCC.
Please take your trash home with you.
Thank You.
Atmospheric River
The “atmospheric rivers” left a trail of broken
startup tables, rip carpet and blew the chairs
and bbq grill all over the flying field. The
over 100 mph wind did a number on the an-
tenna at PCC field too (that’s why we lost the
camera feed and the weather station data).
The photos on the front cover showed the
damages it caused.
The field is very soft at the moment, please
DO NOT DRIVE OFF the paved path, or you
will damage the grass area and worst, you
will get stuck in the mud!
PCC flying field is not an off road dirt
track. DO NOT Drive off the road.
3
Newsletter of Peninsula Channel Commanders January/February 2024
Remember, PCC has the “NO BADGE,
NO FLY” rule. You are not allowed to fly
if you don’t not display your current PCC
badge.
If you see someone without a badge, ask to
see it. Don’t be shy. It is the responsibility
of every member to keep the flying field
safe.
Yes, you do need the stinking badge to fly
at PCC! This rule is to protect our flying
field. Thank you for your understanding.
PCC Current Affairs
PCC in need of a Field Safety Officer, a re-
quirement from AMA. Please let one of the
officers know if you are interested. If no
one volunteer, then we will have to assign
the duty to anyone on the roster.
New and improved PCC Web site is almost
ready to take flight. Just a little more fine tun-
ing and it will be ready to have the debut.
Stay tuned.
2024 Dream Machines
2024 Pacific Coast Dream
Machines Show Grounded
By Permitting Delays
HALF MOON BAY CA (January 22, 2024)
Organizers of the Pacific Coast Dream Machines
announced today that there will be no 2024 Pacific
Coast Dream Machines Event this Spring due to
delays in the permitting process through the Fed-
eral Aviation Administration (FAA).
The Board said, “With a heavy heart we must inform
you that our beloved Pacific Coast Dream Machines
Event will not be moving forward this year. After
seven months of pre-planning, we must cancel the
event due to aberrant delays in the permitting process
with the FAA. We are no longer able to continue
moving forward for a 2024 event at the Half Moon
Bay Airport.”
This decision does not come lightly, but with the
event show date just three months away, the financial
risk of proceeding is becoming too great since there is
still a possibility that the permit may be denied. The
Pacific Coast Dream Machines is a charitable fund-
raiser for the Coastside Adult Day Health Center.
Since the event is held at an active airport, organizers
must work with the Federal Aviation Administration
(FAA) to get an event approval. Considerations in-
clude ensuring the safety of patrons and aircraft, and
keeping the active airfield open. Regulations continue
to evolve; the committee has worked hard to be nim-
ble to meet any new requirements put forth by the
FAA.
Regarding the possibility of any future Dream Ma-
chines event, the planning committee is working to
explore options for receiving an FAA response within
a useful time frame in future years. The Pacific Coast
Dream Machines committee is hopeful for a return in
2025 in order to ensure that this cherished event has a
long-lasting future within the Coastal community and
as a fundraiser for the Coastside Adult Day Health
Center.
Newsletter of Peninsula Channel Commanders January/February 2024 4
Field Rules Reminder
Editor
Just a friendly reminder of some of the PCC field rules.
1. Smoking NOT allowed at the PCC field.
2. NO Alcoholic beverages can be consumed at the PCC field.
3. PCC Flying field operation hours are from Sunrise to
Sunset. Field is closed to all activities from Sunset to
Sunrise.
4. No Taxi in the pit. Walk the plane to the runway by holding onto the fin after engine
started. No electric motor running in the pit.
5. Keeping the field safe is the responsibility of every PCC members.
6. Slow down when driving into and leaving the field, Maximum speed 10
mph. If you see dust (or splashes) in your rear view mirror, you are
driving too fast. Same go for entering the highway, do not kick up the
rocks, we paid good money for them!
7. Lock the gate when you are the last one out. Close the shackle and
rotate the dials so the unlock code is not visible.
8. Turn off the power switch and remove the red key when you are the last person
using the charging station and are done charging.
9. Keep the PCC clean by removing all the trash from the field, take home what your
bring to the field; including all trash (your own or someone else's), broken airplanes/
parts and young children/pet.
10.Safety is the responsibility of all PCC members.
PCC membership badge MUST BE displayed on you while you are at the field.
Remember "NO BADGE, NO FLY" rule applies 24/7/365 at PCC.
No Exception!
5
Newsletter of Peninsula Channel Commanders January/February 2024
Battery: Rated Capacity and Functional Capacity.
We all use NiXX, LiXX batteries to either power
the electronics or the electric motors in our
miniature airplanes.
We all know the rated capacity of the battery we
are using, as stated on the package by the
manufacturers. The rated capacities are usually
the energy (in mA-Hr) that you can draw from a
fully charged battery to an "empty" battery (the
lowest voltage the battery can go without causing
irreversible damages).
When you need to know how long the battery
pack will last; you measure the current draw of
the motor/propeller setup, divide the current
measured by 60, that's the amount of current/
minute. Divide the capacity of the battery by the
current/minute number, you will get the flight
time, in minutes, by the given battery pack until it
is "emptied". Now here is the tricky part, you
really need to know the "functional capacity" of
the battery pack you are using. Then you will get
the more accurate flight time of your system.
What I call functional capacity is the amount of
energy (mA-hr) one can draw out from the
battery to a minimum voltage that your power
system will still function as needed.
For example, I have an airplane that operates on a
6S4000 Lipo battery. When it is fully charged,
the voltage is 25.2 volt. In theory the battery can
be discharged to 18 volt (3 volt per cell) without
causing damages to the Lipo battery. When I fly,
I usually terminate my flight when the
airplane requires about 75% throttle to maintain
level flight. This gives me a few landing "go-
around" possibilities. After I landed, I checked
the battery with a battery capacity checker to see
how much was left in the battery. The readings
usually show the voltage of each cell is about 3.8
volt. This is nowhere near the "empty" voltage of
the battery. The most I can charge back into the
battery is around 1800-2100 ma. This is what I
call "Functional Capacity", the battery is rated
4000 mah, but only about 2000 mah can be used
and then the voltage gets too low for my airplane
to function, i.e. maintain level flights. So, when
measuring the current draws of the motor, using
that number to estimate available flight time from
a specific battery is not totally correct. I can
probably squeeze a little more out of the battery,
but I am risking not being able to bring the
airplane back to landing on the runway safely.
Same applied to the NiCad, Nimh that powers the
electronics in the airplanes. The NiXX battery
capacity is rated from a fully charged battery
(~1.45 volt per cell) and most manufacturers will
terminate discharge test at 1.0 volt per cell. Some
receivers can be operated as low as 3.5 volts
supply voltage, but with reduced reception range.
And for the servos, the given output torque is
rated at 4.8V, 6V, 7.2V or 8.4V (see individual
servo specification supplied by the
manufacturers). When the voltage drops below
the required voltage, the output torque can be
significantly reduced. So if you are using a 4-cell
battery (5.6-5.8 volt fully charged), the rated
capacity given is measured all the way down to 4
volt. Will the servos and receiver work at the
voltage? How much will servo torque reduced on
the servos and how much will range be reduced
in the receiver? I would probably stop flying
when the voltage under load reaches about 5.0V-
5.2V (for 4 cell NiXX batteries) as reported by
your telemetry, or when testing before flight
under load. At that voltage, you will be in danger
of in flight failure, even though you haven't
reached the rated capacity of the battery pack.
Buyers beware!
Brian Chan
Newsletter of Peninsula Channel Commanders January/February 2024 6
Battery Charger Essentials
When you are searching for a charger for charging
your batteries, the specification of the charger can be
confusing or downright misleading sometimes. For
example, the maximum voltage and the maximum
current are not the only information you should look
at, but you also have to look at the output power rat-
ing of the charger.
Some basic electrical information,
Power Law Equation: P = I x V.
V= Voltage (Volts), I = Current (Amperes or Amps),
P = Wattage (Watts)
Wattage is the product of Current and Voltage, P
(Watts) = I (Amps) x V (Volts).
(Are you still reading on? Too much techno-Talk?)
The specification will state the maximum number of
cells (Volts) and maximum charging Current (Amps),
but the most important part is the power output rat-
ing. Typically chargers will have a power output rat-
ing of 80 to 200 Watts.
For example the IMAX B6 80W 6A Charger gives
this specification:
DC Input Voltage: 11 - 18 VDC
Charge Current Range: 0.1A - 6.0A
Li-Ion/LiPo Cell Count: 1 - 6 cells
NiCd/NiMH cell count: 1-15 cells
Output Power (Watts): 80W(Max)
The specification states it can charge 1-6 cells (1S-6S)
@ 0.1 - 6.0 Amp. So when you charge a 3S5000 lipo
pack at 1C, 12.60V X 5A= 63W. The power rating is
80W, so that is not a problem. However, if you are
charging a 6S5000 pack, then you will not be able to
charge at the maximum current rating! A 6S pack has
an ending voltage of 25.20V, charging at 1C, 5.0
Amp will push the power to 126W! So with the power
limit is at 80W, the max current that you can charge is
3.17A, at the maximum voltage (25.20V).
So you see the problem here. You need to know the
maximum size of batteries in your current (pun!) in-
ventory, and what is in your near future. You don't
want to need a new charger when you upgrade to
larger size batteries, so a little consideration of your
future needs will save money and having too many
chargers!
Another concern is how are you powering your
charger. If you have an AC/DC charger, meaning you
can plug it into your house 110V power or a DC
source, life is easier.
Just make sure the charger power rating with
110VAC input is higher than what you need, as
some of the AC Chargers have a lower power rating
on AC power than on DC power.
If you have a DC powered charger, you will need a
power source to supply power to the charger. If you
use a 12V DC power supply, you will need to figure
out how much power you will need to feed to the
charger. Again, the same formula, P=I x R is used to
calculate the amount of power you will need. Using
the 6S5000 battery example, you will need 126 Watts
to charge the battery. To get 130 Watts at 12VDC,
you will need 130W (ha!) or 11 Amp (130W/12V).
So you will need a power supply rated for 130W @
12V or 11 Amps @ 12VDC.
So now you know.
7
Newsletter of Peninsula Channel Commanders January/February 2024
Drone Charges!
Man Faces Felony Charges for Flying
Drone Above Chiefs vs. Ravens NFL
Playoff Game
A Pennsylvania man is facing felony charges for ille-
gally flying a drone over M&T Bank Stadium in Bal-
timore during the AFC Championship Game between
the Baltimore Ravens and Kansas City Chiefs on Jan.
28.
According to a press release from the United States
Attorney's Office District of Maryland, 44-year-old
Matthew Hebert has been charged with crimes related
operating the drone. If convicted, he faces up to three
years in prison for knowingly operating an unregis-
tered Unmanned Aircraft System (UAS) and for
knowingly serving as an airman without an airman's
certificate, and a maximum of one year in prison for
willfully violating United States National Defense
Airspace.
In the press release, it is noted that temporary flight
restrictions are always put in place for major outdoor
sporting events, including NFL games, MLB games,
Division I college games and races in NASCAR and
IndyCar.
Temporary flight restrictions begin one hour before
an event and end one hour after an event, and they
prohibit anyone from operating a UAS within a three
nautical mile radius of the venue.
NFL security was forced to temporarily stop the game
when a drone was flown over the stadium during the
AFC Championship Game, and the drone was traced
back to Hebert by Maryland State Police troopers.
Hebert told the troopers that he purchased the drone
from a company called DJI in 2021, and that he used
the DJI app, which did not prevent him from flying
the drone, prompting him to claim that he didn't know
he was prohibited from flying it.
It was also noted in the press release that Hebert did
not register the drone and did not have the remote pi-
lot certificate required to fly it.
Later this month, Hebert's first appearance in court
and his arraignment will be scheduled.
https://bleacherreport.com/articles/10108223-man-
faces-felony-charges-for-flying-drone-above-chiefs-
vs-ravens-nfl-playoff-game
Protect Yourself from
Hazardous Materials
By Chris Myers
From The Beacon, Miramar Radio Control Flyers, San
Diego, California
If we caught our kids out in the garage sniffing paint or
glue, we would send them to counseling. Yet, as adults we
do this and call it modeling.
Last year I read an article about a man who was working
with acetone in his house. After using it, he almost
collapsed. Getting out of the room and lying down, he
returned to normal.
When I look at the shelves in my work room, the
chemicals stored there range from Balsarite to various
spray cans, paint, lacquer, pesticides, etc., to CA to
acetone, along with a couple cases of fuel. In addition to
this, I use balsa and do a lot of sanding, creating particles
to clog my lungs.
In the process of repairing and maintaining our aircraft,
our hands come in contact with several hazardous
materials. Our body absorbs these chemicals, and
consistent exposure to them can be a danger to your health.
If you dissect our hobby, it quickly becomes apparent that
we often spill fuel and CA on our hands. We sniff the paint
and glue fumes and use grease and oil in our maintenance.
It all gets on our hands. If you are an active modeler, you
have a lot of exposure to hazardous materials. Below is a
list of a few items you may want to keep around
the workshop. They should help minimize the risk of
exposure to hazardous materials.
1. Get a fire extinguisher.
2. Go to an auto paint and body shop and pick up a good
face mask.
3. Buy a small fan for ventilation. [Tech editor’s note: A
large fan is recommended. In order to move more air, a
small fan must be run at a higher speed and that causes
some of its own problems. A large fan running slow
moves sufficient air without making other problems.]
4. Work in a room that is properly ventilated.
5. Buy a box of rubber gloves.
Our hobby is great fun, but more than the propeller
deserves some serious attention to keep you from being in
harm’s way.
Fly safe and have fun.Q
Newsletter of Peninsula Channel Commanders January/February 2024 8
Driveway Repair
Please do not drive too close to the bags and
damage the bags of concrete. Swing wide, please.
The tire mark was too close! The repair survived the
strom and seems to holding up pretty well.
Before and after the storm.
Beach Landing
Florida man arrested for stealing plane
and landing it at Poplar Beach
Beachgoers enjoying a sunset off Half Moon Bay
may have noticed something unusual on Thursday—a
small plane nose down in the sand a half mile south
of Poplar Beach.
Deputies eventually determined that the airplane had
been stolen from the Palo Alto Airport, according to a
release from the department on Thursday night. They
located and arrested a man matching a description of
the individual seen landing and then walking away
from the airplane.
It was good that he did not land at PCC! About 25
years ago, a plane landed on PCC runway at the old
field when the plane ran out of gas. The plane landed
safely and took off after it had been refueled.
9
Newsletter of Peninsula Channel Commanders January/February 2024
or
New Year’s Day @ PCC
A very nice sunny day on January 1st. I think this is Ken’s Laser 200, maybe?
Ken and the smoking Cub! Geppetto flying the club trainer. A rare a sight.
Geppetto’s high wing trainer. Ken is taxiing out the Cub to take off.
Newsletter of Peninsula Channel Commanders January/February 2024 10

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The PCC Newsletter January February 2024

  • 1. Newsletter of Peninsula Channel Commanders January/February 2024 Web Site: http://flypcc.org/ P.O. Box 812, Half Moon Bay, CA 94019 President Dave Mosher 650-255-3266 dmosher@airasys.com Vice President Mark Heckman 650-580-2225 markheckmab@gmail.com Secretary David Santana 650-533-0976 Santanahouse@msn.com Treasurer David Santana 650-533-0976 Santanahouse@msn.com Webmaster Bruce Crawford 650-560-8860 TwoCrawfords@gmail.com New Member Chairman Ray Squires John Bassetto 650-575-4273 650-759-5143 rlsquires@comcast.net geppetto1@mac.com Flight Proficiency Chairman Open Looking for it…. TBD Editor Brian Chan 650-867-8813 pcceditor@gmail.com What’s Happening ... Jan/ Feb 2024 Next Meeting: Deferred AMA Chartered Club # 139 Winter is here in California, rain and wind, no snow yet!.
  • 2. Newsletter of Peninsula Channel Commanders January/February 2024 2 Next Meeting…….. http://www.flypcc.org Chetcuti Room Millbrae Library 450 Poplar Avenue, Millbrae, Ca. January XX , 2022 7:30 p.m. Dogs are not allowed at PCC flying site. Dogs were spotted in several occasions on camera. Please inform the pet owners (if they are not PCC members) that dogs are not allowed at the flying site for the safety of the dogs and club members. No Dogs Allowed @ PCC PCC Flying Site is a NON SMOKING Facility. Please do not smoke at the flying field. No Trash Service at PCC. Please take your trash home with you. Thank You. Atmospheric River The “atmospheric rivers” left a trail of broken startup tables, rip carpet and blew the chairs and bbq grill all over the flying field. The over 100 mph wind did a number on the an- tenna at PCC field too (that’s why we lost the camera feed and the weather station data). The photos on the front cover showed the damages it caused. The field is very soft at the moment, please DO NOT DRIVE OFF the paved path, or you will damage the grass area and worst, you will get stuck in the mud! PCC flying field is not an off road dirt track. DO NOT Drive off the road.
  • 3. 3 Newsletter of Peninsula Channel Commanders January/February 2024 Remember, PCC has the “NO BADGE, NO FLY” rule. You are not allowed to fly if you don’t not display your current PCC badge. If you see someone without a badge, ask to see it. Don’t be shy. It is the responsibility of every member to keep the flying field safe. Yes, you do need the stinking badge to fly at PCC! This rule is to protect our flying field. Thank you for your understanding. PCC Current Affairs PCC in need of a Field Safety Officer, a re- quirement from AMA. Please let one of the officers know if you are interested. If no one volunteer, then we will have to assign the duty to anyone on the roster. New and improved PCC Web site is almost ready to take flight. Just a little more fine tun- ing and it will be ready to have the debut. Stay tuned. 2024 Dream Machines 2024 Pacific Coast Dream Machines Show Grounded By Permitting Delays HALF MOON BAY CA (January 22, 2024) Organizers of the Pacific Coast Dream Machines announced today that there will be no 2024 Pacific Coast Dream Machines Event this Spring due to delays in the permitting process through the Fed- eral Aviation Administration (FAA). The Board said, “With a heavy heart we must inform you that our beloved Pacific Coast Dream Machines Event will not be moving forward this year. After seven months of pre-planning, we must cancel the event due to aberrant delays in the permitting process with the FAA. We are no longer able to continue moving forward for a 2024 event at the Half Moon Bay Airport.” This decision does not come lightly, but with the event show date just three months away, the financial risk of proceeding is becoming too great since there is still a possibility that the permit may be denied. The Pacific Coast Dream Machines is a charitable fund- raiser for the Coastside Adult Day Health Center. Since the event is held at an active airport, organizers must work with the Federal Aviation Administration (FAA) to get an event approval. Considerations in- clude ensuring the safety of patrons and aircraft, and keeping the active airfield open. Regulations continue to evolve; the committee has worked hard to be nim- ble to meet any new requirements put forth by the FAA. Regarding the possibility of any future Dream Ma- chines event, the planning committee is working to explore options for receiving an FAA response within a useful time frame in future years. The Pacific Coast Dream Machines committee is hopeful for a return in 2025 in order to ensure that this cherished event has a long-lasting future within the Coastal community and as a fundraiser for the Coastside Adult Day Health Center.
  • 4. Newsletter of Peninsula Channel Commanders January/February 2024 4 Field Rules Reminder Editor Just a friendly reminder of some of the PCC field rules. 1. Smoking NOT allowed at the PCC field. 2. NO Alcoholic beverages can be consumed at the PCC field. 3. PCC Flying field operation hours are from Sunrise to Sunset. Field is closed to all activities from Sunset to Sunrise. 4. No Taxi in the pit. Walk the plane to the runway by holding onto the fin after engine started. No electric motor running in the pit. 5. Keeping the field safe is the responsibility of every PCC members. 6. Slow down when driving into and leaving the field, Maximum speed 10 mph. If you see dust (or splashes) in your rear view mirror, you are driving too fast. Same go for entering the highway, do not kick up the rocks, we paid good money for them! 7. Lock the gate when you are the last one out. Close the shackle and rotate the dials so the unlock code is not visible. 8. Turn off the power switch and remove the red key when you are the last person using the charging station and are done charging. 9. Keep the PCC clean by removing all the trash from the field, take home what your bring to the field; including all trash (your own or someone else's), broken airplanes/ parts and young children/pet. 10.Safety is the responsibility of all PCC members. PCC membership badge MUST BE displayed on you while you are at the field. Remember "NO BADGE, NO FLY" rule applies 24/7/365 at PCC. No Exception!
  • 5. 5 Newsletter of Peninsula Channel Commanders January/February 2024 Battery: Rated Capacity and Functional Capacity. We all use NiXX, LiXX batteries to either power the electronics or the electric motors in our miniature airplanes. We all know the rated capacity of the battery we are using, as stated on the package by the manufacturers. The rated capacities are usually the energy (in mA-Hr) that you can draw from a fully charged battery to an "empty" battery (the lowest voltage the battery can go without causing irreversible damages). When you need to know how long the battery pack will last; you measure the current draw of the motor/propeller setup, divide the current measured by 60, that's the amount of current/ minute. Divide the capacity of the battery by the current/minute number, you will get the flight time, in minutes, by the given battery pack until it is "emptied". Now here is the tricky part, you really need to know the "functional capacity" of the battery pack you are using. Then you will get the more accurate flight time of your system. What I call functional capacity is the amount of energy (mA-hr) one can draw out from the battery to a minimum voltage that your power system will still function as needed. For example, I have an airplane that operates on a 6S4000 Lipo battery. When it is fully charged, the voltage is 25.2 volt. In theory the battery can be discharged to 18 volt (3 volt per cell) without causing damages to the Lipo battery. When I fly, I usually terminate my flight when the airplane requires about 75% throttle to maintain level flight. This gives me a few landing "go- around" possibilities. After I landed, I checked the battery with a battery capacity checker to see how much was left in the battery. The readings usually show the voltage of each cell is about 3.8 volt. This is nowhere near the "empty" voltage of the battery. The most I can charge back into the battery is around 1800-2100 ma. This is what I call "Functional Capacity", the battery is rated 4000 mah, but only about 2000 mah can be used and then the voltage gets too low for my airplane to function, i.e. maintain level flights. So, when measuring the current draws of the motor, using that number to estimate available flight time from a specific battery is not totally correct. I can probably squeeze a little more out of the battery, but I am risking not being able to bring the airplane back to landing on the runway safely. Same applied to the NiCad, Nimh that powers the electronics in the airplanes. The NiXX battery capacity is rated from a fully charged battery (~1.45 volt per cell) and most manufacturers will terminate discharge test at 1.0 volt per cell. Some receivers can be operated as low as 3.5 volts supply voltage, but with reduced reception range. And for the servos, the given output torque is rated at 4.8V, 6V, 7.2V or 8.4V (see individual servo specification supplied by the manufacturers). When the voltage drops below the required voltage, the output torque can be significantly reduced. So if you are using a 4-cell battery (5.6-5.8 volt fully charged), the rated capacity given is measured all the way down to 4 volt. Will the servos and receiver work at the voltage? How much will servo torque reduced on the servos and how much will range be reduced in the receiver? I would probably stop flying when the voltage under load reaches about 5.0V- 5.2V (for 4 cell NiXX batteries) as reported by your telemetry, or when testing before flight under load. At that voltage, you will be in danger of in flight failure, even though you haven't reached the rated capacity of the battery pack. Buyers beware! Brian Chan
  • 6. Newsletter of Peninsula Channel Commanders January/February 2024 6 Battery Charger Essentials When you are searching for a charger for charging your batteries, the specification of the charger can be confusing or downright misleading sometimes. For example, the maximum voltage and the maximum current are not the only information you should look at, but you also have to look at the output power rat- ing of the charger. Some basic electrical information, Power Law Equation: P = I x V. V= Voltage (Volts), I = Current (Amperes or Amps), P = Wattage (Watts) Wattage is the product of Current and Voltage, P (Watts) = I (Amps) x V (Volts). (Are you still reading on? Too much techno-Talk?) The specification will state the maximum number of cells (Volts) and maximum charging Current (Amps), but the most important part is the power output rat- ing. Typically chargers will have a power output rat- ing of 80 to 200 Watts. For example the IMAX B6 80W 6A Charger gives this specification: DC Input Voltage: 11 - 18 VDC Charge Current Range: 0.1A - 6.0A Li-Ion/LiPo Cell Count: 1 - 6 cells NiCd/NiMH cell count: 1-15 cells Output Power (Watts): 80W(Max) The specification states it can charge 1-6 cells (1S-6S) @ 0.1 - 6.0 Amp. So when you charge a 3S5000 lipo pack at 1C, 12.60V X 5A= 63W. The power rating is 80W, so that is not a problem. However, if you are charging a 6S5000 pack, then you will not be able to charge at the maximum current rating! A 6S pack has an ending voltage of 25.20V, charging at 1C, 5.0 Amp will push the power to 126W! So with the power limit is at 80W, the max current that you can charge is 3.17A, at the maximum voltage (25.20V). So you see the problem here. You need to know the maximum size of batteries in your current (pun!) in- ventory, and what is in your near future. You don't want to need a new charger when you upgrade to larger size batteries, so a little consideration of your future needs will save money and having too many chargers! Another concern is how are you powering your charger. If you have an AC/DC charger, meaning you can plug it into your house 110V power or a DC source, life is easier. Just make sure the charger power rating with 110VAC input is higher than what you need, as some of the AC Chargers have a lower power rating on AC power than on DC power. If you have a DC powered charger, you will need a power source to supply power to the charger. If you use a 12V DC power supply, you will need to figure out how much power you will need to feed to the charger. Again, the same formula, P=I x R is used to calculate the amount of power you will need. Using the 6S5000 battery example, you will need 126 Watts to charge the battery. To get 130 Watts at 12VDC, you will need 130W (ha!) or 11 Amp (130W/12V). So you will need a power supply rated for 130W @ 12V or 11 Amps @ 12VDC. So now you know.
  • 7. 7 Newsletter of Peninsula Channel Commanders January/February 2024 Drone Charges! Man Faces Felony Charges for Flying Drone Above Chiefs vs. Ravens NFL Playoff Game A Pennsylvania man is facing felony charges for ille- gally flying a drone over M&T Bank Stadium in Bal- timore during the AFC Championship Game between the Baltimore Ravens and Kansas City Chiefs on Jan. 28. According to a press release from the United States Attorney's Office District of Maryland, 44-year-old Matthew Hebert has been charged with crimes related operating the drone. If convicted, he faces up to three years in prison for knowingly operating an unregis- tered Unmanned Aircraft System (UAS) and for knowingly serving as an airman without an airman's certificate, and a maximum of one year in prison for willfully violating United States National Defense Airspace. In the press release, it is noted that temporary flight restrictions are always put in place for major outdoor sporting events, including NFL games, MLB games, Division I college games and races in NASCAR and IndyCar. Temporary flight restrictions begin one hour before an event and end one hour after an event, and they prohibit anyone from operating a UAS within a three nautical mile radius of the venue. NFL security was forced to temporarily stop the game when a drone was flown over the stadium during the AFC Championship Game, and the drone was traced back to Hebert by Maryland State Police troopers. Hebert told the troopers that he purchased the drone from a company called DJI in 2021, and that he used the DJI app, which did not prevent him from flying the drone, prompting him to claim that he didn't know he was prohibited from flying it. It was also noted in the press release that Hebert did not register the drone and did not have the remote pi- lot certificate required to fly it. Later this month, Hebert's first appearance in court and his arraignment will be scheduled. https://bleacherreport.com/articles/10108223-man- faces-felony-charges-for-flying-drone-above-chiefs- vs-ravens-nfl-playoff-game Protect Yourself from Hazardous Materials By Chris Myers From The Beacon, Miramar Radio Control Flyers, San Diego, California If we caught our kids out in the garage sniffing paint or glue, we would send them to counseling. Yet, as adults we do this and call it modeling. Last year I read an article about a man who was working with acetone in his house. After using it, he almost collapsed. Getting out of the room and lying down, he returned to normal. When I look at the shelves in my work room, the chemicals stored there range from Balsarite to various spray cans, paint, lacquer, pesticides, etc., to CA to acetone, along with a couple cases of fuel. In addition to this, I use balsa and do a lot of sanding, creating particles to clog my lungs. In the process of repairing and maintaining our aircraft, our hands come in contact with several hazardous materials. Our body absorbs these chemicals, and consistent exposure to them can be a danger to your health. If you dissect our hobby, it quickly becomes apparent that we often spill fuel and CA on our hands. We sniff the paint and glue fumes and use grease and oil in our maintenance. It all gets on our hands. If you are an active modeler, you have a lot of exposure to hazardous materials. Below is a list of a few items you may want to keep around the workshop. They should help minimize the risk of exposure to hazardous materials. 1. Get a fire extinguisher. 2. Go to an auto paint and body shop and pick up a good face mask. 3. Buy a small fan for ventilation. [Tech editor’s note: A large fan is recommended. In order to move more air, a small fan must be run at a higher speed and that causes some of its own problems. A large fan running slow moves sufficient air without making other problems.] 4. Work in a room that is properly ventilated. 5. Buy a box of rubber gloves. Our hobby is great fun, but more than the propeller deserves some serious attention to keep you from being in harm’s way. Fly safe and have fun.Q
  • 8. Newsletter of Peninsula Channel Commanders January/February 2024 8 Driveway Repair Please do not drive too close to the bags and damage the bags of concrete. Swing wide, please. The tire mark was too close! The repair survived the strom and seems to holding up pretty well. Before and after the storm. Beach Landing Florida man arrested for stealing plane and landing it at Poplar Beach Beachgoers enjoying a sunset off Half Moon Bay may have noticed something unusual on Thursday—a small plane nose down in the sand a half mile south of Poplar Beach. Deputies eventually determined that the airplane had been stolen from the Palo Alto Airport, according to a release from the department on Thursday night. They located and arrested a man matching a description of the individual seen landing and then walking away from the airplane. It was good that he did not land at PCC! About 25 years ago, a plane landed on PCC runway at the old field when the plane ran out of gas. The plane landed safely and took off after it had been refueled.
  • 9. 9 Newsletter of Peninsula Channel Commanders January/February 2024 or New Year’s Day @ PCC A very nice sunny day on January 1st. I think this is Ken’s Laser 200, maybe? Ken and the smoking Cub! Geppetto flying the club trainer. A rare a sight. Geppetto’s high wing trainer. Ken is taxiing out the Cub to take off.
  • 10. Newsletter of Peninsula Channel Commanders January/February 2024 10