This will be my last message for the year and a new president will be taking over in January. My plan next year is to travel more ( Ireland/Scotland for my 70th birthday !!), golf more and contribute more time, talent and treasure to a few of my favorite charities and my church. I am thankful that our club officers have been excellent and that we have had some significant improvements in our flying site on Mission Bay. The club is in good shape for the coming year.
The wide variety of events have been entertaining and have built a sense of camaraderie through the year. In summary, I believe that 2014 was quite a nice year and 2015 will be even better for our 340 members. I appreciate all the fine club members that have helped our club the last few years....you know who you are!
Saturday, November 22nd is special in a number of ways......General Meeting...Last one of the year.
- Election of new officers (see meeting minutes below)
- Discussion of options for the Banquet
At this time we have the place:
St. Johns Episcopal Church Hall in Chula Vista
Larger capacity, more room than the Sweetwater Women's Club
December 12, Friday from 5-6 PM set up and 6- 8:30 PM for dinner, Caterer to be chosen
Raffle or no Raffle issues, Charge to come or no Charge....?????
Before and after will be some interesting happenings with the Photography Group and the FPV Spotlight ( 11:30 approx) we have had an informational blast on this so I will keep it simple. I know this has been shorter than some of my other messages but please come to the meeting tomorrow and take part in the discussion and help us make decisions. I promise more detail on any and all of the above at that time.
(Editors Note: Yes, the SEFSD calendar is not working. Please be patient, it will be fixed soon.)
Go ahead and click the "RENEW NOW" text at the upper left corner of this page and sleep easy knowing you will be paid up for another year of RC fun.
Saturday starting about 9am. Bring out your best and show off.
The Pacific Photographic Society is San Diego's largest and most active photography group. Meet-up events are well attended, and we expect about 20 good photographers to show up. The work this group does is really excellent and you will be pleasantly surprised with their creativity, and their ability to capture your plane. They publish images on their website after the event, where anyone can view or download them. So come out and show off your most photogenic planes, 'copters, animatronic birds, or whatever you have. Examples of their work can be seen at these sites:
(Copyright policy: Photos can be used by pilots or SEFSD for private or organizational purposes, but not sold. Photographers only ask that images be credited)
Meeting started at 7pm
Tim, Brad, Frank, Jim, Paul, George, Scott, Ray. Absent Quan
- Site services went up to $125
- Novembers budget was approved
- We have 345 members
- $15,900 was taken in from membership dues.
- Renewall form is done and is ready to go
- To do 2 year membership, you must do two year AMA
History was made on October, 25th 2014 in Saint George, Utah. The R/C Bullet designed, built and driven By (me) Nic Case achieved a top speed of 202.02mph !
Not bad for an amateur - with good friends, family, great sponsors and off-the-shelf electronics! The chassis, body and tires are all custom, stemming from myself and my teams imagination. There where many people that have helped throughout this journey. And as it turned out, Tracy, Josh and Mak (the people that were there at the beginning) were there to witness this historic speed run. I appreciate everyone's support immensely.
I've learned so much during this journey, from aerodynamics to people.
It's funny how expectations can change how goals are enjoyed. The longer it takes - the less of a surprise it is when the goal is achieved. But sometimes, uncharted territory unfolds this way.... You can't succeed if you don't fail.
Now, the R/C Bullet has consistently earned the top speed title.
This run qualifies for Guinness World Record.
This one's for you Chris
Powered by a NeuMotor.
SEFSD Inaugural FPV Multi Rotor Race
December 20th, 2014 09:00am 12:00pm
Where: Silent Electric Flyers of San Diego field
812 Sea World Drive, San Diego 92109
Bring all of your FPV rigs down and RACE!
Classes will be determined once entrants are known, depending on entries.
Course Layout will be with standard Pylon Race Flags, and there will be a start/finish hoop you must pass through.
Cuts will eliminate your lap. Points will be 10 for 1st , 5 for 2nd, 3 for 3rd and 1 for a race finish 4th or beyond. 5 lap race heat, 10 lap race main. Points double for Main Event. Fastest 5 racers per class in each main, A B or C.
KO PROPO Timing system will be used. You must have either an open channel, or a “Y” Harness from your RX to power the transponder via standard servo plug.
TO REGESTER OR FOR MORE INFO:
What is International Drone Day?
A Multiplex Mentor as Motor Testbed Not Just a 40 Size Electric RC Trainer/Sport Airplane for the Masses
By Carl Murphy
Part I, Mundane, deliberately so, as specified from the Manufacturer
Synopsis: Construction and extended use starting 2014 of a Multiplex Mentor, a medium sized (five foot/1,60meter wing span weighing about four pounds/2.2kilos) trainer/sport radio controlled airplane made of expanded in molds high impact foam plus modern synthetic materials as reinforcement. The test model was modified to sustain many flights landing on rough farm fields. It was used trying out various brushless electric propulsion combinations with (11.1), (14.8) and (29.6) Volt Lithium Polymer batteries and folding propellers.
A paper analysis of cost per flight based on one hundred flights for an as specified by the manufacturer Mentor is included as were for two similar sized foam airplanes.
This is Part 1 of Two Parts, in which the basics of ownership, such as acquisition, assembly and suitability of purpose, for an RC airplane this size and type are gone over.
The Multiplex Mentor, although not all that popular, may be seen and experienced in person at RC flying fields all over the world. A recommendation for extending your experience beyond your personal range is the You Tube videos on the Internet as other written reports are almost universally deficient. Included in Part II is the authors personal modifications (tape, fiberglass, blocked off air inlet, reinforcing, clearancing for a folding propeller and so on and so forth) for durability of use and ease of swapping between propulsion systems.
Some uses for which a Mentor is entirely suitable, such as a tow plane for RC gliders or fitted out for use as a Remotely Piloted Vehicle, are omitted from these articles, just going over the basics here. Although with it’s in flight stability, size, the easily available additional power, internal room and impact absorbing foam construction a Mentor can serve those rolls well.
Another use often cited in my reports for other airframes, the use of a simple, durable and small foam airplane (Easy Star II, Fun-Man/Mini Mag, Zagi flying wings, even the Twin Star II) to investigate possible slope lift, along with wandering miles across the countryside transmitter in hand and RC airplane in the air, are not omitted from this report due to lack of time to investigate every possible use, it is because the Mentor isn’t suitable! With the shift to it’s four pound size the physics change, a Mentor is not a carefree use it anywhere and land as the mood suits you of one pound foam airplanes. Off the landing field impacts can shear off the wings and generally trash the Mentor, you have to plan the landings ahead of time with this one.
Part II covers use of non-stock propulsion components to create an RC airplane which is a blast to fly, sometimes lighter and lower powered, and sometimes way more power, even on windy days landing on rough fields.
The Case for Mode 4 Transmitters, or,
"How North America Got It Wrong", or,
"How Most of the Planet Got It Wrong"
Updated October 2010
The great majority of RC pilots in North America use transmitters set up in Mode 2. This paper
sets out reasons why that is a bad idea, and makes the case for using Mode 4. Most of the rest
of the world uses Mode 1, which, while better than Mode 2, is still inferior to Mode 4 for most
people. If your flying style involves only circuits and horizontal figures-of-eight, with the
occasional loop and aileron roll thrown in, the choice of mode is probably not very important. But
if you want to learn more advanced aerobatics, read on.
So, what are these "Modes"? Transmitter Modes define what movements of the two control
sticks control which of the main four control channels, Rudder, Aileron, Elevator and Throttle.
The usual response I get when this subject comes up is "What on earth is Mode 4?". I point out
that almost everyone who has flown a three channel plane in the US has flown Mode 4 - rudder
and elevator on the right stick and throttle on the left. Yet when they get a four channel plane
they do a very curious thing - they move the rudder to the left stick and put ailerons on the right
stick, which is Mode 2. Why not just add ailerons to the left stick? You might think this would be
just a matter of preference, with the choice of where to put rudder and ailerons being somewhat
arbitrary. However, it goes much deeper than that.
First, to be really clear, let's define the four modes. In all cases left-right motion of the sticks
controls aileron and rudder, and forward-backward motion of the sticks controls elevator and
throttle. That leaves four possibilities, for the four Modes.
Elevator Throttle Throttle Elevator
| | | |
Rudder --o-- --o-- Aileron Rudder --o-- --o-- Aileron
| | | |
Mode 1 Mode 2
Elevator Throttle Throttle Elevator
| | | |
Aileron --o-- --o-- Rudder Aileron --o-- --o-- Rudder
| | | |
Mode 3 Mode 4
The difference between Modes 2 and 4 is that aileron and rudder, are swapped.
The difference between Modes 2 and 1 is that elevator and throttle, are swapped.
The difference between Modes 1 and 4 is that the entire sticks are swapped.
Why does the Mode matter?
This story is confirmed in Elmer Bendiner's book, The Fall of
Fortresses. *Sometimes, it's not really just luck.* Elmer Bendiner was
a navigator in a B-17 during WW II. He tells this story of a World War
II bombing run over Kassel, Germany and the unexpected result of a
direct hit on their gas tanks. "Our B-17, the Tondelayo, was barraged by
flak from Nazi antiaircraft guns. That was not unusual, but on
this particular occasion our gas tanks were hit. Later, as I reflected
on the miracle of a 20 millimeter shell piercing the fuel tank without
touching off an explosion, our pilot, Bohn Fawkes, told me it was not
quite that simple.
On the morning following the raid, Bohn had gone down
to ask our crew chief for that shell as a souvenir of
unbelievable luck.The crew chief told Bohn that not just one shell but
11 had been found in the gas tanks. 11 unexploded shells where only one
was sufficient to blast us out of the sky. It was as if the sea had been
parted for us. A near-miracle, I thought.Even after 35 years, the
awesome event still leaves me shaken, especially after I heard the rest
of the story from Bohn. He was told that the shells had been sent to the
armorers to be defused.
The armorers told him that intelligence had
picked them up. They could not say why at the time, but Bohn eventually
sought out the answer. Apparently when the armorers opened each of
those shells, they found no explosive charge. They were as clean as a
whistle and just as harmless.Empty? Not all of them! One contained a
carefully rolled piece of paper. On it was a scrawl in Czech.
The Intelligence people scoured our base for a man who could read Czech.
Eventually they found one to decipher the note. It set us marveling.
Translated, the note read:"This is all we can do for you now...Using
Jewish slave labor is never a good idea."
Ed and I spent the afternoon with Discovery Channel's Daily Planet. They ran the 5 minute TV segment last night and you can view it on their website.
Here are the instructions:
Go to www.discovery.ca/dailyplanet <http://www.discovery.ca/dailyplanet>
Episode 176, November 18th 2014 should appear on the left hand side half way down
Click on Segments
Then click on the down carrot to see all the segment names
Select "Witch Flyer"
Then click the play button
There will be two 30 sec commercials and then the segment of 4 and 1/2 minutes.
Here is a list of .pdf files of early (pre-1920) books on airplane design and construction. A lot of interesting information for someone interested in the topic, and all readily available free on this page. Three are about model planes. The first entry is a file containing all the books listed on the page. Or you can download each one separately.
Time to renew your membership. Click the "RENEW NOW" button at the top left of this page.
1. Please check the calendar for the new schedules for: Pylon Racing, Electroglide, Float Flying, and Indoor Flying.
2. The Torry Pines Gulls have their outstanding newsletter available online.
3. Please check out all the other great items for sale in our "For Sale by Members" area.
4. Please check out the exciting new 2015 SEFSD Membership Application form here. Renew Now!
5. Please check out these fine newsletters from other clubs:
The Harbor Soaring Society has a wonderful newsletter here.
6. There is now a complete list of club instructors under the "Resources" tab.