Pheonix 35 Runaway Start during Range Test

[KillerWatt]

Just started using a new Pheonix 35, mfg'd 9-04-02.....Seems to work OK except during Transmitter range test, where with TX antenna down, and moving away from model, motor will self-start to some arbitrary RPM, and then can't be throttled all the way off ... I can create this effect every time i range test but never notice servos flutter or control loss... Seems to fly and throttle perfectly to hi altitude and far flying range provided i don't do any "antenna down" range test before flite . Have used only the factory default esc settings... Is this normal ?? Scares me a little, as i always do a range test before first days flite Never noticed this before during 1000's of brushed esc flites .........kw

[KillerWatt]

OK... i reprogrammed the Throttle option from "Auto" to "Fixed" just to experiment with....Motor does still Auto-Start at extreme range test (but now only when other servos start twitching, indicating out-of-range) and now have total control of motor throttle when moved back closer to model for in-range ...Motor now does not continue to run at some RPM and can totally turn off .... Does this seem normal now ?? ... thanks.... kw

[Patrick del Castillo]

Killer - If you use auto calibrating throttle, run your throttle throught the whole range (0-max-0) BEFORE beginning your range check. This will prevent the controller from trying to calibrate on junk from the receiver when you are out of range.

Patrick

[KillerWatt]

Thanks, Pat for reminding me of the "throttle blip" proceedure..i didn't realize it had important effects and i sorta ignored it in the very well written "owners manual" (if i can effortlessly get through the programming mode, it's gotta be good) .... btw, if Bec issues occur because of servo loads, do my Bec(s) shutdown because of internal V-reg pkg thermal(wattage) heating effects or amp limmiting ??.... and would either removing the Neg lead's rubber insulation or adding a longer, air exposed heat sink fin to the Bec's existing heat tab ??..... thanks and keep up the fantastic product & support...... kw

[jwgilliand2]

Heat is your worst enemy. Respect it! Fear it! Cool it:)