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Old 05-26-2007 | 08:26 AM
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Silver182
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From: Littleton, CO
Default RE: JR Quirky Failsafe tests........

ORIGINAL: c/f

I did my testing as best to the scenario David described. My modules where Fixed. R945S Rx

A 10X anttena does not collapse fully so you get plenty of range on first section alone. You must unscrew it from the ball swivel for ground range testing to shorten the distance. So with that.

I set Master TX near Kingcat anttena collapsed first section, and operated controls normally. I then took second offending TX with antenna OFF and walked out of range of MASTER (too lessen range to observation of model) set it down and returned to Master to insure Master was under full control. I then went and picked up the offender TX and walked within range of the model with the offender, as soon as the offending TX was within range to cause a reaction, the elevator went to almost half down before returning nuetral prior to interferrence and the model was NOT in control on either TX and in full failsafe.

With two JR TX operating within range of model I never got any TX to control the model, only failsafe, If you turn them on within the operating range of TX or model, that IMO is not what David described. If I turned one on within range of each other the elevator blip does not happen. IMO where talking milliseconds of processor coding and on initial power up I'm sure its a differant algorityhm prior to online broadcasting.


Davids explaination and my testing explains to me WHY no scanner results were seen, My thoughts are someone flew on his channel previuosly, collapsed their antenna which leaves one length extended (10X), returned to their pit area, got busy with their model, and forgot to turn OFF their TX, This would be out of range of the scanner and Davids model and setup this Failsafe quirk as David entered into the limited broadcast zone of the offending TX.

The 9303 as Master or Offender did the same thing, The 8103DT did not, IMHO Jr engineering team who once had it right, went wrong and did not cover this base in sofware as previuosly designed in the beginning. My son has my old 10SXII so I will get that one and see if it works like old JR failsafe.

I'm also pretty certain the list of offending JR TX is small within the zone of the blip, who flew prior to David... And they KNOW who they are and must be freaking out with that giant skidmark on the field show center, the rest of the weekend. So what would be the right thing to do in this instance knowing you just trashed a $10K+ model and have no means to replace it, and this amount of time and Monday quarterbacking has passed???
If he knows who he is...The right thing to do would be to whip out the checkbook...

I'll tell a few stories of shoot downs I'm familiar with. I said if he knows who he is because...I've got a friend whose radio locked up and hit a fence just after landing.. Because he forgot and left his own second transmitter (same frequency) ON) Yep, his own transmitter… and he got excited for a while looking around for who might have tuned on… ) )

I also shot myself down one-day years ago not long after getting my then new JR 10 channel. I was in the habit of starting the timer on screen just after takeoff, gear up, and a slight crosswind turn (the old pattern days remember em). Well this day I did just that, but I had just been using the trim offset screen.. to center up trims.. That was a simple neat feature on our older JR 10 channels before digital trims came about. Anyway you might have guess it yep... I hit the timer at my normal time.... but I'd forgotten to switch back to the flight screen, and as luck would have it the button for the timer in the flight screen was located in exactly the same place as the Store trim offset button was located. And it just so happens that when you store trim offsets for what I'm sure must be a good programming reason….. yep all input control to all channels is locked up.. Lost nada.. Well I just watched as my beautiful new JOKER went sailing off into the sunset... boom(

Another time many years ago, I got shot down by the owner of the local hobby shop! But he and I had made an agreement several weeks earlier because he was in the habit of coming out to the field setting up and switching on without even thinking about looking around to see if someone else was on the same frequency as he was. He did this all the time.. It was a bad habit he had developed and you might know it that was in the days when out here in the west we didn't have official frequency control at our flying site. That was in the 27mHz days. Remember Green, Yellow, Brown, ....etc. flags. Yep, the agreement was which every one of us shot the other down we'd whip out the old checkbook and write a check on the spot... he did. As I recall the amount was about $300 bucks.

I’m so happy / glad new days are ahead with the 2.4 stuff, just keep in mind there is more than one way to crash, and as the saying goes and it’s true, so very true if it flies it also will crash.

I liked David’s attitude in reflection during one of his last posts about the BIG crash he stated it’s now time for the popcorn…
Lee H. DeMary
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