As the title says, my question is twofolded.

Firstly is regarding ESC calibration:  Simple calibration through throttle channel 3 - I always use sBus so when I do a calibration, I have to switch my receiver back to PWM mode so that channel 3 is throttle and I can calibrate. Does the calibration of the ESCs remain correct when I switch back to sBus or is there a different method of calibration I'm unaware of?

Secondly, my TBS Disco build is with extended arms and needless to say I've got some fairly long wires.  Would it be better to have the ESCs mounted close to the PDB with long wires going out to the motors, or ESCs at the end of the arms very close to the motors with long wires leading out from the PDB?  (Power is 4S 35C 4500mah with 18 guage wiring) Thanks

As for your 2nd question, I dont know how the wires resistance and such comes into play, but I do know that bringing the mass of esc's inward (closer to pdb) would benefit in quicker maneuvering.
Sorry if thats not part of your concern and you are just curious about flow of electricity.
Good luck!

Valid point!

I'm not sure too many on this forum will be familiar with the Tarot ZYX-M FC you are using (I could be wrong). It seems like the Tarot should have a calibration routine of it's own for the ESC's, but I don't know. Have you considered using a different FC (that is supported by Clean/BetaFlight)? Lot's of them out there for $30-$40. Many which can handle GPS, compass, barometer.

(27-Jan-2017, 07:40 PM)sloscotty Wrote: I'm not sure too many on this forum will be familiar with the Tarot ZYX-M FC you are using (I could be wrong).  It seems like the Tarot should have a calibration routine of it's own for the ESC's, but I don't know.  Have you considered using a different FC (that is supported by Clean/BetaFlight)?  Lot's of them out there for $30-$40.  Many which can handle GPS, compass, barometer.

ZYX-M is basically a Naza-M V2 clone, in fact even the software assistant is identical.  Like most of the "GPS" type FCs, they don't have their own type of ESC calibration, it's done through the receiver.  I haven't thought about changing as I wouldn't want to mess with external components and I dread the thought of having to play with PIDs and rates on a 4000-5000 gram craft.  The only FC I'd consider switching to would be the Eagletree Vector.

(27-Jan-2017, 05:09 PM)RENOV8R Wrote: Firstly is regarding ESC calibration:  Simple calibration through throttle channel 3 - I always use sBus so when I do a calibration, I have to switch my receiver back to PWM mode so that channel 3 is throttle and I can calibrate. Does the calibration of the ESCs remain correct when I switch back to sBus or is there a different method of calibration I'm unaware of?

To be sure, you would need to know if the stick/transmitted throttle range remains the same in both PWM and sBus mode.
You could check that with any other FC/firmware. If range stays the same then there shouldn't be a problem.

I only know my spektrum dx6: in digital dsmx 2048 i have to stretch servo travel i.e. channel range further than in PWM mode, to reach 1000-2000us, but maybe that's some spektrum special case.