[NSRCA-discussion] Electric/IC ...wasArmingPlug/ReceptacleProblem

krishlan fitzsimmons homeremodeling2003 at yahoo.com
Tue Feb 10 17:44:30 AKST 2009


Geez Ron. Look what you started.. Don't you know by now that you can't talk about electrics??? Some people get their feelings hurt.  
The only place it's sort of allowed is in the Electric Pattern forum on RCU. 

I don't understand why it's such an issue anymore. Glow-Electric.. Both are here to stay! Same planes, different motors.  Who cares? Not me!!!! Just fly the dang plane! And have fun doing it!!!! All this mumbo-jumbo is nonsense.  Fly what you like, but don't hate on someone else for flying what they like. If you are serious about competing, the scores are what matter in the long run. And if you are good enough, you will get them no matter what you fly. I'm pretty confident that the top guys could fly a Piper Cub and beat most of us. lol

Matt, this isn't intended at you, your's is just the last email and I hit the reply button bro.. 

Chris          

--- On Tue, 2/10/09, Matthew Frederick <mjfrederick at cox.net> wrote:
From: Matthew Frederick <mjfrederick at cox.net>
Subject: Re: [NSRCA-discussion] Electric/IC ...wasArmingPlug/ReceptacleProblem
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Date: Tuesday, February 10, 2009, 5:25 PM



 
 

Hahaha... Maybe for those who don't know how to 
maintain their own engines... Me, I just choose not to loan money to the 
in-laws. I've been running 140 DZ's and FZ's for 3 years now with no problems 
whatsoever. I even assembled a complete 140 FZ at the field in 20 
minutes using spare parts a friend gave me... back-flipped to start on the 
very first try, runs like a top.
 
Matt

  ----- Original Message ----- 
  From: 
  Keith Hoard 

  To: General pattern discussion 
  
  Sent: Tuesday, February 10, 2009 6:02 
  PM
  Subject: Re: [NSRCA-discussion] 
  Electric/IC ...wasArmingPlug/ReceptacleProblem
  
I don't look at a YS engine as an investment . . . more like 
  the "loan" you make to one of your in-laws who "promises" to pay you back . . 
  .


  On Tue, Feb 10, 2009 at 5:54 PM, Ron Van Putte <vanputte at cox.net> 
  wrote:

  Matt 
    - I disagree with part of your statement #1.  I like electrics and I 
    love the smell of burning nitro too.

One of my fondest memories is 
    going to contests up in Ohio, Michigan and Indiana with Don Lowe in his old 
    Pontiac station wagon, which had the aroma of castor oil, that came from the 
    fuel that had dripped on and seeped into the carpet in the back.

I 
    totally agree with #2.

Ron
    
    
    

On Feb 10, 2009, at 5:20 PM, Matthew Frederick 
    wrote:


    I'm 
      afraid I must take issue with two of your statements:
1) I'm not afraid 
      of electric, I just don't like it. Part of what I like about the hobby is 
      the engines, I love the smell of burning nitro in the morning, smells like 
      victory
2) There's no such thing as too many YS engines to those who 
      like them

Matt
----- Original Message ----- From: "John Ferrell" 
      <johnferrell at earthlink.net>
To: "General pattern 
      discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Tuesday, 
      February 10, 2009 10:47 AM
Subject: Re: [NSRCA-discussion] Electric/IC 
      ...was ArmingPlug/ReceptacleProblem



      It 
        is an interesting question for sure...
Can you think of any other 
        form of aviation where empty weight is more important that Gross or take 
        off weight?
Of course one cannot blame the IC fans for being afraid 
        of electric technology.

Personally, the bad news is that the new 
        knee joints I had installed last year are not permitting me to squat or 
        kneel. It is tough to deal with tending an IC powered airplane with that 
        limitation.
The good news is that electrics do not appear to require 
        the operator to squat/kneel.

Unfortunately there remains the 
        problem of recovering the investment of too many YS engines and the 
        accompanying airplanes...

John Ferrell  W8CCW

"All 
        that is necessary for the triumph of evil is for good men to do 
        nothing." -- Edmund Burke
http://DixieNC.US


----- Original Message 
        ----- From: "Ron Van Putte" <vanputte at cox.net>
To: "General pattern 
        discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, 
        February 09, 2009 5:03 PM
Subject: Re: [NSRCA-discussion] Electric/IC 
        ...was Arming Plug/ReceptacleProblem



        I 
          beg to differ.  The rules are already slanted to favor IC: the 
          way  the airplanes are weighed.  IC airplanes are weighed 
          without fuel;  electric airplanes are weighed with fuel 
          (batteries) and both may no  more than 5 kilograms.  OMG, 
          here we go again!

Ron

On Feb 9, 2009, at 3:54 PM, James 
          Oddino wrote:


          I've 
            been at this longer than most and have known from the 
             beginning that the propulsion system is the key to winning in 
             Pattern competition. It can also be the most frustrating due 
            to  constantly changing conditions.  I found that the gas 
            engines with  spark ignition were a lot more consistent than 
            glow and that  reduced the frustration. I have more recently 
            convinced myself  that electric is the least frustrating. 
             A few folks have gone back  to glow after playing with 
            electric to get more power for windy  conditions.  We are 
            now getting close to getting more than enough  out of electric 
            systems (3 to 4 HP?) and when that happens we won't  have these 
            discussions anymore. However, before that happens, the  rules 
            will probably be changed to favor IC.

Jim


On Feb 
            9, 2009, at 12:39 PM, Jerry Voth wrote:


            I've 
              been lurking for a long time and after reading all the things that 
              one needs to do to successfully fly electric, it makes one 
               wonder how things would be if electrics were the norm from 
              the  beginning of powered R/C models. It might go like 
              this;

Hey guys, I just bought this little IC engine and I 
              tried it on  one of my Pattern models and it works really 
              well. "Look what it  will do;
1. It has just as much power 
              as our electric motors.
2. The only batteries you need are for 
              the flight pack, glow  igniter and the electric starter if 
              you don't like to flip by hand.
3. All you have to do is pump 
              fuel into the tank, spin the engine  with the starter and 
              fly.The tail gets a little oily, but what the  heck, it's 
              fairly easy to clean up.(Switching the radio on first  is a 
              given.)
4. You don't have to haul a generator or an extra car 
              battery  around to charge motor batteries."

Please 
              don't take this the wrong way. It is tongue in cheek and 
               just an observation. I also have too much time on my hands 
              these  days.

JJV
----- Original Message ----- From: 
              "Jay Marshall" <lightfoot at sc.rr.com>
To: "'General pattern 
              discussion'" <nsrca-discussion at lists.nsrca.org>
Sent: Monday, 
              February 09, 2009 1:50 PM
Subject: Re: [NSRCA-discussion] 
              Arming Plug/Receptacle Problem



              A 
                100 ohm resistor may be enough to charge the caps and make the 
                ESC
"active". Bad idea...

Jay 
                Marshall

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On 
                Behalf Of  Ron Van Putte
Sent: Monday, February 09, 2009 
                1:14 PM
To: General pattern discussion
Subject: Re: 
                [NSRCA-discussion] Arming Plug/Receptacle Problem

Good. 
                 I will try it.  What wattage 100 ohm resistor? 
                 Let's see,
doesn't sustained power equal voltage 
                squared, divided by the
resistance?  If so, 42 squared, 
                divided by 100 is 17.64 watts.
That's probably overkill, 
                since the current surge is transitory.   How
about a 100 
                ohm, 10 watt resistor?

Just thought of something: 
                 With the 100 ohm resistor across the
arming plug 
                receptacle, won't the ESC be on whenever the batteries
are 
                plugged into the circuit?

BTW, what about Castle 
                Creation's statement that the "spark is 
                your
friend'?

Ron

On Feb 9, 2009, at 11:55 AM, 
                James Oddino wrote:


                Put 
                  a 100 ohm resistor across the arming plug receptacle. 
                   Then the
capacitors in the ESC will charge without a 
                  spark as you connect
the batteries.  When you connect 
                  the arming plug, no spark.

Jim


On Feb 9, 
                  2009, at 8:08 AM, Ron Van Putte wrote:


                  I 
                    have a problem which I am sure many other E-powered 
                    airplane
owners have that I'd like to solve.  I use 
                    an arming plug to
connect the two 5S Lipo packs to the 
                    ESC.  On initial contact of
the arming plug with the 
                    receptacle, there's a big spark thrown.
Eventually the 
                    contacts on the arming plug and receptacle get
burned to 
                    the point where the electrical contact is very 
                    bad.
Yesterday I had to land my airplane deadstick 
                    because (I think)
the ESC saw what it thought was low 
                    voltage out of the battery
that was actually due to the 
                    burned arming plug/receptacle
contacts.  BTW, I am 
                    using high-amp Anderson Power Pole
connectors, which are 
                    probably more susceptible to having the
contacts burned 
                    than would Deans Ultra connectors.

I have thought 
                    about putting a BIG capacitor in parallel with the
arming 
                    plug, that would damp the initial current surge 
                    which
causes the spark.  The capacitor could be 
                    removed before flight.
However, I'm wondering if there's 
                    a more elegant solution.

Ron Van 
                    Putte

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-- 

Keith Hoard
Collierville, TN
khoard at gmail.com



  
  

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