[NSRCA-discussion] *SPAM* Re:Electric/IC ...wasArmingPlug/ReceptacleProblem
Matthew Frederick
mjfrederick at cox.net
Tue Feb 10 19:53:26 AKST 2009
I had a 140 DZ do that when it plowed into the base of a tree...
----- Original Message -----
From: "Ron Van Putte" <vanputte at cox.net>
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Sent: Tuesday, February 10, 2009 8:43 PM
Subject: Re: [NSRCA-discussion] *SPAM* Re:Electric/IC
...wasArmingPlug/ReceptacleProblem
> Oh yeah?!! I once watched a guy turn my Hanno Special .61 into a pile of
> aluminum and steel shards in 0.1 seconds at the end of a screaming dive
> (it was me screaming) into a concrete road.
>
> Ron
>
> On Feb 10, 2009, at 8:11 PM, Atwood, Mark wrote:
>
>> HA! I once built an OS Hanno .61 from nothing but twist ties and
>> refashioned pull tabs from old cans of coke in the porta john and
>> finished 6 minutes before I started. Runs like an engine.
>>
>>
>>
>> From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-
>> discussion-bounces at lists.nsrca.org] On Behalf Of Matthew Frederick
>> Sent: Tuesday, February 10, 2009 8:26 PM
>> To: General pattern discussion
>> Subject: *SPAM* Re: [NSRCA-discussion] Electric/IC ...wasArmingPlug/
>> ReceptacleProblem
>>
>>
>>
>> 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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