General Interest

552 posts

Treasurer’s Report for Oct 2021

We have 337 members as of October. The Holiday Banquet is booked for Edgewater Grill in January 2022! Tickets will go on sale soon, so be on the lookout for that. Right now we’re looking at 100 indoor seats available, plus a few overflow in the patio section, so buy your tickets quickly when they are available. Elections are coming up. While I have offered to run for Treasurer again, if anyone else has any minuscule desire to run, I shall gladly provide necessary training, step aside, and run for other positions. 

-Quan

BECs Explained

By Mark Davis

There is much discussion on RC hobby bulletin boards about BEC’s.   It is popular to remove stock BECs and replace them.   Is this necessary?  Is it helpful?   Can I hook up two and have redundancy?  When do I need to disconnect the red wire from the ESC?   Well, it depends on the situation.   This article is to give a high-level model of the two main kinds of BECs, so you can understand the considerations that might apply to your situation.

What is a BEC? 

One option is to run your receiver directly from an auxiliary battery, as in Figure 1.  The other option is to steal a little power from the high voltage batteries that run your motor, and use that to run the receiver instead, as in Figure 2.   Since the motor typically uses a high voltage, this requires a voltage regulator, to regulate the high voltage down to a lower voltage that doesn’t blow up your receiver and servos.  Such a regulator is called a “Battery Eliminator Circuit” or BEC, because it “eliminates” the need for a receiver battery.  The term “BEC” is used only in RC.  To the rest of the world, it is simply called a “voltage regulator.”

 

 

 

Types of BECs

There are two main types of regulators:  Switching and linear (sometimes called “LDO”).

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San Diego Bay Boat Racing Videos & Pics

Randy Wynant sent in some boat racing links.

“Here is the H1 Unlimited Video, none of which is mine….Just the last Race – If you watch, there is a costly MISTAKE at the start.

T-28 Racing……T-BOAT Racing both have a “Flying Start”…….. DON’T CROSS the line early!!!  And Lots of sound…just not the V12 open class sounds…..”

 

“Here is my aerial footage of the same race, just a short clip”

 

“Google Photos of the south end of the course”

BOD Meeting Minutes for August & September 2021

By Eric Shapiro

For August:

8/12/2021

SEFSD Board of Directors Meeting Minutes

Quorum at 6:35 PM, meeting convened.

In-person participants: Brad, Steve N., Quan, Steve M. Carl
Online participants: Steve B., Eric, Jeff, Jovi
Not present: Kenny

Meeting held at Steve N.’s home.

Brad: Will need to buy more Dust Down.
Jovi and Quan joining forces to plan yearly party.
A couple members have stepped up to be flight trainers.

Steve M.: F5B between 12:30 and 5:00 PM 8/15/2021

Steve N.: Looking into more grindings for parking area.
T-28 racing clinic 1-hour before event.

Steve B.: Posted old R/C videos on website from the olden days.

Jeff: Will restripe field.

Jovi: BOD dinner 5 PM Saturday.
First post-Covid club meeting went well.
Will need other members to help cook hotdogs.

Quan: 325 members as of 8/12/2021
Some funds transferred to high-yield checking account.
Bank balance sufficient and financials available to club members upon request.
Field water/rolling service performed last weekend.

Eric: Surface Improvement Project
The material costs are right in the range of: $16,200 < n < $18,900.
The labor cost is estimated to be $34K+.
All in costs without borders is $50K+
Retention borders add additional costs.

Motion and seconded to buy more Dust Down. Ayes have it.

Upcoming Events:

T-28 racing this upcoming Saturday at 10:00 AM – 8/14/2021.
Arrive 1-hour early for race clinic being hosted by Steve N.

F5B between 12:30 and 5:00 PM 8/15/2021

Next Electroglide upcoming at 10:00 AM – 8/21/2021.

Club Meeting to be held on 8/28/2021.
Fun Fly event to be announced.

Next BOD meeting date 9/8/2021.

Meeting adjourned at 7:34 PM.

Eric Shapiro
SEFSD Secretary 2021

 

For September:

9/8/2021

SEFSD Board of Directors Meeting Minutes

Quorum at 6:37 PM, meeting convened.

In-person participants: Brad, Steve N., Quan, Steve M., Eric
Online participants: Steve B., Jovi, Carl
Not present: Kenny, Jeff

Meeting held at Steve N.’s home.

Brad: AMA may reimburse a small amount of field upgrades.
New picture needed for next year membership card.
Eric has 2 pics for submission.

Steve M.: Our club made it into the AMA magazine.

Steve N.: Nothing out of the ordinary.

Steve B.: Website is working well.

Jeff: Will restripe field.

Jovi: Club meeting went well.
Next month’s event – Bomb Drop

Quan: 329 members as of 9/8/2021
Bank balance sufficient and financials available to club members upon request.

Eric: Will submit 2 pics for badge.
Will purchase gift certificates.

Motion and seconded for Eric to buy enough gift certificates for 4 events.

Upcoming Events:

T-28 racing on Saturday, 10:00am on 9/11/21

Bomb Drop on the last Saturday of the month, 9/25/21

Next BOD meeting date 10/6/2021.

Meeting adjourned at 7:43 PM.

Eric Shapiro
SEFSD Secretary 2021

Modelers are the Best!

Two recent instances:

First

Just want to tell you about what occurred at the field this past Saturday Aug. 21st.

Upon landing my Maule, (a perfect landing of course) one of the main landing gear wheels came off. The wheel is held on by a very, very small c-clip, (Jesus clip) which because of the hub design is difficult to get back on. Watching me struggle with it Jim, Rick, Jovi, Other Brad, Fredrick, and a few others I can’t remember right now, came to assist me and get the wheel reinstalled.

This may sound like a small thing but it highlights how our club members are always ready, willing, and able to help a member out. This is one of the things that makes SEFSD such a fantastic flying club.

I would be remiss if I didn’t thank Brad who mentored me back into being a fairly competent RC pilot with the assistance of Jovi at times.

Best regards,

Alan Isaacs

Second

A group of us fly at a place with lots of obstacles.  One is a kin to Charlie Brown’s “Kite Eating Tree”.  On a windy day recently it reached out and grabbed my UMX Waco.  Naturally it was about 25 feet up.  Everyone stopped flying and came to the rescue.  A few of us fashioned a long stick that we used to whack and coax the recalcitrant Waco from the clutches of the tree.  We beat poked and prodded.  Seemed everyone was keen to get a turn at whacking my poor little plane.  During this time I suggested we use Bob’s car to ram into the trunk of the tree and try to shake the plane loose.  If that didn’t work then we could back the car up and try again, and again, until it fell out.  Bob was not sure he liked the idea.  The Waco whacking continued until it slowly got lower and lower in the tree.  Finally, Bob stood on Jim’s tailgate and beat it with a metal pole until the completely thrashed little plane fell into Randy’s arms.  Thanks guys for your help!  It probably took a half hour to get it out.  Modelers really are the best.  A very short video:

Steve B.

Tanking by the Bay

M4 Sherman 05

By Bob Stinson

Back in July some of you may have noticed a couple of members – me and Scott V – piloting something different than planes; tanks! Steve B was there to take some photos and published them in our newsletter. More recently, you may have seen me “playing in the dirt” at the east end of the runway. So, what was all that about?

Radio control tanks is a niche hobby that nevertheless enjoys an international following. There are forums dedicated to it and aftermarket suppliers throughout the world.  As in our hobby, advances in electronics and battery technology have greatly expanded choices. The most common scale for these tanks is 1:16, which makes them about 12 to 18 inches in length.

A basic r/c tank runs on 2.4ghz, which controls two motors driving each side’s tracks. A motor operates the turret traverse and another controls the main gun elevation. Some tanks have airsoft pellet firing capability and some have infrared emitters and receivers enabling drivers to battle. Many have both. Tanks can have sound and exhaust smoke generators, headlights and taillights. Models span early WW2 through the latest MBT’s currently operating.

An entry level tank is mostly plastic. This includes the body, wheels and tracks. There are metal upgrades for all of these, as well as additional details to enhance authenticity. There are advanced radios, transmission gears and main control boards. The extent of customization is governed only by imagination and your pocketbook! A full setup – tank, transmitter and a battery – can be as little as $200 or north of $1500. Most use Lithium Ion batteries, but upgrades may include Lipos or Nimh’s. Weight, which is an airplane’s nemesis, is actually an advantage for tanks. It increases traction and realism. Painting, detailing and weathering if desired are all potentially a part of the hobby.

Clubs exist to, among other reasons, provide opportunities for “tankers” to battle each other. using IR capabilities. A tank will receive a number of hits and will stop when this is achieved. You’ll be a dead hulk until a scenario objective is achieved or only one tank survives. Los Angeles and San Diego both have battle clubs. Some battlers travel for hundreds of miles to participate. “Hobby Squawk” is a forum that includes a number of local participants. “RC Tank Warfare” is another forum based in England with members from all over the world. Google will direct you there and undoubtedly reveal more.

I’ve attached some photos of these pocket monsters. Check out SoCalBobS on Instagram and the Hobby Squawk website and Robert Stinson on Youtube for more information about this hobby, or talk to me and Scott V at the flying field.

Bob Stinson

Roy Orbison – Modeler

Bob M.

Roy Orbison grew up very poor.  Many don’t know that his hobby was model airplanes.  He was apparently very detail oriented when building them, although I can’t find any good photos of the models.  I read somewhere that a B-17 he built was very nicely done.  Here are a few photos I found.  I also read in a model plane magazine that even after he became wealthy when he was between tours he still visited his local hobby shop frequently and he still drove his old beat up pickup truck that he loved.

He died at age 52, but the contributors to his early death were no exercise, little sleep, eating burgers, fries, sodas and shakes on a daily basis between performances and chain smoking.  In this B&W Pretty Woman video with Bruce Springsteen you can see the lounge is fuming with cigarette smoke.

https://www.youtube.com/watch?v=_PLq0_7k1jk

SEFSD Classifieds Now Working Again

With Quan’s expert help, we have our For Sale By Members area of the website operational again. If you would like to sell items to make room for more ( of course ) please send your submissions to Steve at editor@sefsd.org. Include a description if the model, components, condition, price, contact information, and a pic or two.  To view ads, click the link on the website, see below:

Marty Engler, July 30, 1924 – June 17, 2021

In Memoriam

July 30, 1924 – June 17, 2021

It is with sadness that we mention the passing of Martin (Marty) Engler. A club member, a friend to many, and an American hero. A member of America’s Greatest Generation, who rose to fight a true evil threatening our world in World War II.

Marty served as a pilot, flying P-47 Thunderbolts in Europe. He was shot down while scouting enemy positions and was rescued by an American armored column. Returning to his airbase, he continued flying combat missions during the Battle of the Bulge.

After his return on the QE II to the United States, he enrolled at Cal Poly.  Soon after, he married his wartime sweetheart, Mary, the day after her graduation from William and Mary in Williamsburg, VA.  They settled and started a family in San Luis Obispo while he earned his degree in Mechanical Engineering.  In 1950 he returned to San Diego where he worked for SDGE for 27 years…starting as a laborer and leaving the company as Executive Vice President.  His accomplishments during that time paved the way for more success in Texas where he worked for El Paso LNG Company in Houston and later retired from their parent Company, El Paso Natural Gas.  He enjoyed 25 years of fun restoring and flying antique airplanes.  After Mary’s death in 2012, he settled back in San Diego with his daughter and his dog, Piper.