Servo Starting Problem

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Old 12-15-2007, 01:07 AM
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Default Servo Starting Problem

Hi guys,
I am having a continuous problem with the throttle servos on my nitro tourer.
They run fine for around six to ten events then fail, they still hold centre but will not follow the trigger position until you bump the arm this starts the servo then off it goes to the selected position.
this is not just Hitec but a variety of brands, The links are adjusted properly no binding or over reaching or excessive spring compression.
Hoping for some light on the problem the last servo was only three months old and cost over one hundred dollars.
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Old 12-15-2007, 11:45 AM
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Are you using digital servos?
Do you use ABS?

If using digital, be sure and turn ABS off.

What type of Rx pack are you using?
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Old 12-15-2007, 01:04 PM
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No digital servos, no ABS, radio is Spektrum dx3, reciever pack is intellect 1400mah 6 volt. have had original kyosho servo two Hitec hs422's. and because people have mentioned to me the problem may be servo quality (low price one's ) the one that has just failed is a Futaba s9405 which is supposedly designed for this type of application. upon inspection they all appear clean inside. They do not strip gears or burn out, They just do not start without a gentle nudge.
Thanks for the reply.
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Old 12-15-2007, 03:13 PM
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Move your Rx pack to CH 3 from the Bec slot.

Yes, the lower end servos could have issues.
However, I have ran a 525 on my gas 10th scale truck for year.
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Old 12-17-2007, 10:18 AM
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Sounds like a motor issue in the servo. Try what Tres has suggested first. If that does not help your situation, send our servos in to us to be checked out. Double check all connections and linkages/ travel volumes. I would suspect that you may have the servos trying to drive past what mechanical limits there are in the linkage system causing the motors to burn out because of the extra current draw through them.
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Old 12-18-2007, 12:45 AM
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Thanks guys
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Old 01-16-2008, 05:26 PM
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What you described was happening to me got so ticked off because my hobbyshop didnt have another one so I took it apart and couldnt get the servo to work what I finally found was that there was some redish pink paint that was inside the motor that destroyed the brushes to the motor some manufacturers use paint or nail polish for protection of motor windings lets see if they will honor a warranty repair or replacement all the racers around me at the mushroombowl say they have had excellent service from hitec never had a problem with a new servo b4, I sent them an email today so I'll be waiting for their reply
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