Auto-pop door "Add-A-Motor" D-20 Repair after 7 months

Discussion in 'Coop & Run - Design, Construction, & Maintenance' started by G-Man, Nov 2, 2012.

  1. G-Man

    G-Man Chillin' With My Peeps

    I made an automatic pop door for my coop using the Add-a-Motor D-20 as the engine to lift the door. It worked great for about seven months.

    (Construction image)

    [​IMG]


    (Switch that turns the porch light on when closed and off when the door is open)

    [​IMG]


    (Construction image)

    [​IMG]

    (Finished)

    [​IMG]



    Yesterday morning I noticed the porch light I set up on the coop was still on at 8:00 am.. that means the pop door was still closed; very strange.
    I tripped the manual switch on the timer & the motor just continued to run.. that meant the "on/off" switch in the motor wasn't being activated..
    So after reading the warranty, shaking my head & laughing to myself. I opened the unit & noticed the gear that is used to operate the "fingers" that trip the "on/off" switch that stops the motor and reel from spinning was bouncing around loose in the case. I noticed right away that the plastic post that held the aforementioned gear in place snapped off .. I still haven't determined the cause though.
    After digging through my tool box I found a steel 3/32 ejector pin from my machinists days that was very close in diameter to the plastic post that had snapped off.
    I just drilled a blind press fit hole where the broken plastic post had been. Cut the pin to length and using some JB Weld I set the new steel pin in place.


    Reassembly was straight forward. The D-20 is operating as well as before.


    The tip of the screw pointing to where the plastic post was.

    [​IMG]


    The gear and broken plastic post.

    [​IMG]


    The 3/32 ejector pin and after I drilled the blind hole for the pin.

    [​IMG]


    The short piece of ejector pin epoxied in place with JB-Weld

    [​IMG]


    I hope this helps should anyone else encounter problems with their D-20 motor.
     
  2. ChicksDigWorms

    ChicksDigWorms Out Of The Brooder

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    Jun 22, 2012
    You have the door open and close on a timer?
     
  3. G-Man

    G-Man Chillin' With My Peeps



    Yes, I used a Honeywell In-wall programmable timer model #RPL2740B.
     
  4. chfite

    chfite Chillin' With My Peeps

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    Jun 7, 2011
    Taylors, SC
    It's a shame it was not more durable.

    Chris
     
  5. G-Man

    G-Man Chillin' With My Peeps

    Hi Chris, yes I totally agree.
    The door and motor have been running smooth since the repair.
    I'll be sure to post should I have any further issues.
     

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