250 runner ESC

Discussion in 'Walkera Runner 250' started by Fastfred, Feb 2, 2016.

  1. Fastfred
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    Fastfred Member

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    I have waster three ESC's already. Granted two were do to a puddle crash and we have that corrected now with some waterproofing spray. But are there more durable, higher AMP esc by Walkera or aftermarket which can be used?


    thanks

     
  2. bjr981s
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    bjr981s Moderator Staff Member

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    You can try. Your issue will be connecting them to the mainboard.

    The ESCs are the weak link on the Runner
     
  3. Fastfred
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    Fastfred Member

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    I can make the physical connection, but which wires in go to which location. Out to the motor is easy. Any particular "brand" you recommend?
     
  4. bjr981s
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    bjr981s Moderator Staff Member

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    There are 5 connections from the mainboard to the ESC.

    The 2 outer ones are Main Power + and - 12V
    The 3 inner are Power + and - 5V and throttle signal.

    I can not advise which is which.

    I recently bought this from GearBest and it has ESCs included. I don't know if they are better than Walkera or Not.

    I am going to build with FlySky i-10 RX with Telemetry and DJI Naza Lite with GPS Flight Controller (not use the CC3D FC).

    RoboCat 270mm Quadcopter Kit 12A ESC / CC3D FC / Marspower 2204 Motor / Propeller
     
  5. Fastfred
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    Fastfred Member

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    That helps. I found this.
    So the 11. volt is the direct feed to the motors and the 5.v is the control to the esc.
    If I miss connect i fry the aftermarket esc and not the board in theory, correct.

    walker wire digram.jpg walker wire digramc  esc.jpg
     
  6. Fastfred
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    Fastfred Member

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    PS. I like your project but my eyes are on the OAS Wasp.

    230 wasp
     
  7. bjr981s
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    bjr981s Moderator Staff Member

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    YOU should be OK. The Main power should survive a reversal and so should the 3 pin Throttle.

    If you look closely at the ESC you might gain some insight into a pattern for wiring. Would think only a couple of possibilities.

    Cheers
     
  8. thomas
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    thomas New Member

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    Hi Guys,

    Did you figure which connection is what? it's easy to guess for the two outers (+/- 12V) but what about the three inners?

    i like the runner 250 concept but in my opinion, it has 2 big misconceptions: a) the screws are impossible to screw/unscrew few time and b) the powerboard is a major weak point because it doesn't need a big crash to break and then you need to buy a new 25€ board and umount/mount everything.

    my project is the following: i want to reuse runner parts as much as possible (frame, motors, cam, etc.) and put a walkera 703 ppm receiver, a powerboard, a sp racing f3 FC and a video TX. That would be nice to reuse ESC as well. In that perspective, would the 5V connection be necessary? aren't just throttle and ground necessary?

    Thank you for your help.

    Cheers.
     
  9. bjr981s
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    bjr981s Moderator Staff Member

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    FYI

    The ESC requires a common ground.
    Main Battery.

    This is to power the motors.

    Ground.
    +5V
    PPM signal wire Throttle Signal from FC

    These are the FC to ESC connections.
     

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