how to setup a brushless?

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    • March 19, 2007 at 10:08 am #12719
      klims
      Participant
      • Posts: 332

      Hi guys,

      a couple of days ago my brushless speed controller and brushless motor arrived in the mail. since then i have not been able to work out how to hook the puppy up.

      the only rc item i have that has a servo lead setup thing that the speed controller plugs into is my nanodragon2 which runs an external servo. so i plug the speed controller into this and wire up the motor and it doesn’t spin. it just makes a whining noise and i can see/feel the motor pulsate.

      i have tried all the configurations of the leads to the motor and still nothing. is it possible i got a dud ESC? i was also wondering if the signal to run a servo is different to that of a speed controller.

      any help would be much appreciated.

      thanks,
      Andrew.

    • March 19, 2007 at 2:08 pm #60063
      Dangerous Dave
      Participant
      • Posts: 229

      the ESC should run from a standard servo port.

      the ESC should also have main battery in (2 wires) and motor out (3 wires) leads.

      at a guess you might be trying to run the brushless motor on servo power alone.

      just looked at the links – I’ve got the 30A version of that ESC. They work well, don’t be surprised when it starts singing to you!!

    • March 19, 2007 at 9:56 pm #60064
      klims
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      • Posts: 332

      thanks for the info Dangerous Dave.

      so i thought back to my days sitting in a lecture theatre learning about 3 phase motors, which these are and remembered that for it to work there needs to be power delivered to any two motor wires at the correct time.

      remembering this i unplugged the motor and shorted the terminals to find out if i’m getting three phases, and i’m not.

      the ESC sings at me when i connect say red to black, black to yellow, but not yellow to red. would i be correct in saying that the ESC is stuffed?

    • March 20, 2007 at 5:01 am #60067
      Dangerous Dave
      Participant
      • Posts: 229

      don’t know..

      I’m not a ful bottle on motors either (I’m studying Mechanical Engineering, only did a lightweight course on lecky motors).

      Maybe one of the wires is a common ground?

      I’m sure one of the gurus who produce those Nelly Spider things can help us both out!

      Are you driving everything with enough supply voltage?

    • March 20, 2007 at 5:17 am #60068
      klims
      Participant
      • Posts: 332

      not sure about the common ground thing.
      i wouldn’t think its very likely since power needs to pass through each phase so the ground should change.

      not sure about the supply voltage. its running off 8AA’s so i guess so.
      on the 30A ver. do you need to select the suply voltage somehow?
      did yours come with any type of instructions?????

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