Beware of the X9303 2.4gz if you fly heli's and airplanes!!!!

[jayc73]

I fly both airplanes and helis with my 9303. I use flaperons on my airplane and neutral flaperon position just happens to be the same position as idle up 1(I bet you can see this comming). I flip over to my heli without shutting off the transmitter. I start my heli and the engine races because it is at 80% on idle 1. THANK GOD I had a good handle on the rotor. I paniced a bit and forgot about throttle hold. I finally shut the reciever off and manually pushed the throttle down. I ended up only burning out my clutch but it could have been worse....... If I turned my transmitter off it would have warned me I was in idle up but since I switched models without cycling the power I didn't get a warning!


BE CAREFUL

[daijoubu]

Always touch all throttle controls and verify the proper position before starting or plugging in the flight pack.

Then again last night I was practicing autos and flipped off the throttle hold while in Idle Up! Oops.

[jayc73]

I made an assumption I would be protected, but you know what they say about assumptions.

[Stinky Igloo]

I always go over all my switches before powering on my RX.

[Roadrune]

To my knowledge, it is not possible to change models without turning off and back on the TX....

[marchambault]

Your TX should have been beeping if you turned it on with the flight mode set to idle up.

[cbdane]

Two issues that I see here. First, you can't change the model without powering down and powering up the transmitter. Second, after selecting a new model, the transmitter won't start sending data until the flight mode switch is at normal, throttle hold is disengaged, and the throttle stick is at zero.

Here's my theory for what it's worth (probably not much ;)). Is it possible that your throttle stick was partially up when you bound your receiver to your transmitter giving you a hot failsafe position? If your flight mode switch was indeed at idle up, then the transmitter wouldn't transmit leaving the receiver to default to the failsafe program and hence all of the unwanted exitement.

Just some thoughts.

[jayc73]

I'd say try it....Hit the enter switch and power to get into the model select mode. It will show you are in an airplane. If you switch it to a helicopter the transmitter will not beep if you have it in idle up. After you select the heli if you turn it off the transmitter will beep if you're in idle up.

[JimLerch]

I'd say try it....Hit the enter switch and power to get into the model select mode. It will show you are in an airplane. If you switch it to a helicopter the transmitter will not beep if you have it in idle up. After you select the heli if you turn it off the transmitter will beep if you're in idle up.
HOLY SHIT.. He is absolutely correct!!!!!!!!

I too didn't believe this until I actually just tried it on my X9303. As a heli guy building a plank, I can see this being a MAJOR source of whoopsies.

I'd probably catch it, as I always touch every switch (all should be pointing forward or down. I also usually touch all the controls and the trim..

[marchambault]

I get different results ... I fly around my plane,

1) land with the flight mode switch set to 1 (ie: mid rates)
2) turn off TX
3) Hold down enter, turn on TX
4) TX beeps, with flight mode switch message
5) I can't do anything until I bring the flight mode back to 0
6) I can now select my helicopter
7) Helicopter is powered up, life is good.

[Roadrune]

My DSX9 can be switched on with flt. mode in idle 1 or 2 if planks are selected, just as mensioned above.

[marchambault]

Huh ... there must be different firmwares around.

[Pinecone]

I don't have my X9303 handy (remote from Ecuador), but I do have my XP9303 to fly Phoenix.

If I have a airplane selected that uses separate aileron servos, it gives a Flap Switch warning when powering up with the Flight Mode Switch in other than the 0 position.

BUT, if the airplane selected has a single aileron servo (no flaperons) the Tx does nothing upon power up, and yo ucan do exactly what was said, switch to a heli with the Flight Mode switch in Idle Up.

So, I guess the smart way to do things then is to ALWAYS cycle the power switch after switching models.

[marchambault]

bummer ... is this gonna be like the Spektrum receiver v1.2, v1.6 saga: ie "let's all return our stuff to Horizon to get that latest fix that's not really a fix but still a change to resolve human-machine interaction problems"?

[Pinecone]

You are assuming you can get JR/SPektrum/Horizon to:

a) Admit that this a problem

b) Actually come up with a fix.

Easy fix for me, power cycle the Tx after changing models. And then double check ALL switch settings before powering up the model (which I do anyway).

[JimLerch]

While I agree its a problem, the only troublesome situation would be:


Go fly my airplane, pack up, go home
The next day unload stuff onto flight table
Turn on transmitter (forgetting to change model)
Forget to set switch positions (I always double check to avoid hot start)
Power up electric heli
Wonder why the tx -> rx won't link up.
Look around and have a "face palm" moment
Change transmitter to the correct model
Have tx -> rx link up while in FMode 1,
Have softstart engage while I look on perplexed as hell, not certain if I should try and make it to the battery wires while the head spools up, or try and figure out whats up with the transmitter.
Gawd help me if this ever happened with my on ESKY Belt-CP, it didn't have a soft start feature, and did once beat the living snot out of me when I inadvertantly went from Norm - FMode 1 while on the bench tinkering..

Hmm, I could probably shoot anothe HD video of this and submit to Horizon, but I doubt they would do anything..

[marchambault]

Does your ESC arm with throttle input? Most don't.

[JimLerch]

The receiver (ar6100) is set to "failsafe" with 0 throttle, 0 collective, 0 cyclic, 0 rudder, and +70% gain on the gyro. So the whole bird will initialize even if the radio is off when the bird is turned on.

So, yea, if the Tx is on, but on the wrong model, and I power up the Electric heli, it will initialize like normal, but won't link up.

Of course, I DO NOT rely on the alarms to prevent hot starts, but I will admit it is nice feature to have.