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04-24-2011, 08:31 PM | #1 (permalink) |
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Join Date: Nov 2008
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Keep Frying HS-5245 MG and don't know why
Hi. Hoping someone might be able to help me. I have a trex 500 and have now had two servos just glitch, get hot and seize just while working on the heli on the bench (testing swash movements with copilot 2 in the first case and helicommand in the second). Once I was using an external battery pack and another time, I had the 6s lipo plugged in going to the receiver through a external BEC.
The swash just stops moving and th/ ings get quiet and . . . uh, oh, the servo is hot and then it is dead. What am I doing wrong Thanks |
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04-24-2011, 08:43 PM | #2 (permalink) |
Join Date: Sep 2010
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When I google "Hitec 5245" from what I can see is the servo has issues. Don`t think that servo is reliable. Hope this helps. Sorry to hear about your servo issue.
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04-24-2011, 08:57 PM | #3 (permalink) |
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Join Date: Jan 2011
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Maybe to many or to little volts coming from the BEC???
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- Tarot 500 HK3026-1400 w/15t, HW Platinum 80A HS 225's Gy401 Spek A6060 -"Trex" 450 - HS65mg's, GA250, Futaba 9650 -Blade mCPx ~Awesome!~ - Dx6i |
08-13-2011, 05:16 PM | #4 (permalink) |
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I just had the same thing happen. I was setting up the head on a new HC500, when it just stopped. Felt hot, the 5245 is dead. I was using a flight battery, ( 5s ) and a BEC ( 5.0v).
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
08-16-2011, 03:27 AM | #5 (permalink) | |
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Join Date: Jul 2008
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Quote:
Because processor-based servos are attempting to achieve and hold a commanded position "much" more aggressively than non processor-based servos, component matching and set-up is very critical. Jittering (poor RF communication causing servos to hunt), surface binding, too heavy (too big) control surfaces, insufficient surface travel that causes binding, etc will all put undue strain on the motor, especially the brush structure. If the servo is having trouble just holding the control surface up while sitting on the ground, and then asked to go to a commanded position repeatedly can cause overheating. Overheating causes the brushes to fail, or the ciruitry supplying the current. If there is no binding, the first failure should have pointed to an issue of this sort, the second surely does. Any "digital" servo, irrespective of model or brand, asked to hold a position it can not achieve, caused by excessive EPA or binding linkages etc will experience heat build-up and could fail within moments. It is definitely not normal for these servos to fail in this manner, unless you exceeded their design parameters, copy of spec sheet is attached and please also refer: Digital Servo - Why They Burnout and more under sub section: "Servo - Digital & Brushless Servo, Programmers and Software" which is under: "Radio Systems, Accessories, Alterations and FAQ." at: Alan's Hobby, Model & RC FAQ Web Links Alan T. |
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