Binding Question

[Pinecone]

What stick position and mode do you use for binding?

The manual say neutral sticks at low throttle. But low throttle is not neutral collective, unless you set mid stick and Throttle Hold.

But I am running a 9303 with Spektrum module and I can't turn the Tx on in TH mode.

[ChasHeliCop]

Basically, I think you look at it like this. If the heli starts up unexpectantly, how would you like it to start up. Say you had the wrong model in your Tx, and powered up the heli, it is going to power up just like it is bound, if it does not have a signal. So, low stick is how I bound mine, because I flipped off the Tx once, before I bound the Rx, and it went to full throttle.

[Skiddz]

I'd like an answer as well. I've been trying to figure out WTF the "failsafe" does all night. (DX7 in my case)

with the binding plug inn the Rx, I set the sticks at neutral and turn on the Tx with the Bind button pressed and quickly flick on throttle hold. Rx goes through the binding process so I shut everything off, pull the binding plug and then power everything back up.

To test the failsafe, I push the collective to full positive pitch and then shut off the Tx. Nothing happens.. Shouldn't the failsafe set the servos to where I set 'em once the signal from the Tx is lost?

I tried the same thing without bothering with throttle hold - same deal, nothing happens.

I've tried a dozen possible combinations and the "failsafe" doesn't seem to do jack...

[Pinecone]

AFAIK the 6/7 ch Rxes hold last position with everything except throttle. But I guess that when you power up, but before it connects to the Tx, then is will go to bound position.

So try this, set collective somewhere, then power down heli, turn off Tx, then power up heli. Collective should move to bound position. Of course with motor disconnected. Or you could spool up and then turn of Tx and see what happens. :)

I guess based on that, you would be OK with binding in low stick Norm. As ChasHeliCop says, then if the thing tries to spool up when you power up, before you connect, it would be 0 throttle low pitch.

The 9 ch allows you to set all stick positions for fail safe.

[Danal Estes]

"failsafe" for Spektrum is in three states:

1) RX power up but not yet linked to TX
CH1 (throttle) puts out no pulses. Keeps ESCs from arming. Literally no signal.
CH2 through whatever are in "memorized at bind" positions

2) Link established
All channels follow TX inputs

3) Signal Lost (aka "Fail Safe")
CH1 (throttle) goes to "memorized at bind" position
CH2 through whatever "hold last good"

Exception: The BR6000 receiver (sold mostly to robotics, almost unknown to fliers) does a "memorized at bind" on ALL channels in condition (3) above. Used to shut down weapons on robots. Otherwise identical to AR6000.

Exception: The AR9000 can be set (by when you remove the jumper during bind) to "hold last good" or "memorized at bind" on CH2 through CH9, your choice, when condition (3) occurs. CH1 always behaves as above, "memorized at bind"

All of those receivers put out "memorized at bind" on CH1 (throttle) during loss of signal. All of them use "memorized at bind" during part (1), the moments between RX power up and link to the TX on all channels but throttle.

So, why do you care what positions the sticks are in during bind? Because you don't want a servo to jam during the few moments of RX power up before link up to the TX (state 1 above). Why do you want low throttle? To stop a "fly away" during loss of signal.

So, Kevin, when you're not seeing anything move when you switch off the TX... this is correct... Two things will help verify this: First, the servos don't "go soft" like they would with an FM RX and no TX; they are actually holding "last good received position" fail-safe, and second, just for fun, plug a physical servo into CH1 (Throttle) and you'll see what happens when you turn the TX off... it will go to bound position.

[Pinecone]

OK, so low stick in Normal will be fine for binding.