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Motor shutting down

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Old 03-26-2014, 06:10 PM
  #1
jjmretired
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Default Motor shutting down

I have a 1/4 scale Proctor D-VII with a Great Planes Rimfire 50cc motor 80-75-230. The ESC is an Castle Creations Phoenix Ice 2 HV160 50V. The battery packs are 12s, 5000 mah, 45-90C. The radio is a Futaba 7C with the trims set at nuetral and the throttle throw set at 100%. The prop is a 23x8 (mid range recomended) After arming, as the throttle is advanced, the motor's rpm increases normally until about 3/4 throttle then shuts off. When the throttle is shut down there is a beep beep --- beep beep --- beep beep (low voltage indicator). when the throttle is increased the same thing happens again, motor stops at 3/4 throttle. If I disconnect the battery and rearm, I get the same results. A couple times though, the motor didn't stop at 3/4 throttle and gave full power (30 lbs thrust). I even got one succesful flight. I've used three different fully charged/balanced batteries with the same results. I just sent the ESC back to Castle and they said it checks out 100%. Any suggestions are appreciated.
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Old 04-01-2014, 07:25 PM
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aeajr
 
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I am going to move this thread as the "ask the expert" forum is no longer active.
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Old 04-04-2014, 12:23 AM
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Yeah, lots of channel long time no new thread....
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Old 04-04-2014, 12:58 PM
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Rodney
 
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Check your wiring for a poor connection somewhere between the battery and the ESC. Most probably a voltage drop in the loop somewhere that causes a low voltage shutoff.
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