Time machine help needed- really

Discussion in 'General Electronics Chat' started by timetraveler, Aug 18, 2009.

  1. timetraveler

    Thread Starter New Member

    Aug 18, 2009
    2
    0
    For the pasted 6 years I have been constructing a full scale replica of the Time Machine movie prop from the 1960 film. My progress is chronicled here...
    http://timemachinejunkyard.com/
    Click on "Full Scale"
    I'm at the point of installing it's motor and control. I have almost no knowledge in this field. I'm hoping to find someone who can give me a few pointers as to what type of motor and control would be best for this application. On the Machine is a 60 inch diameter metal dish which needs to rotate at variable speeds forward and reverse from 0 to aprox. 90 RPM. This all needs to be controlled from a single lever. If you have this type of knowledge, please contact me at my site http://timemachinejunkyard.com/ or commuicate here. Or if you know someone who might be interested in helping, please let me know.
    Thanks.
     
  2. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    A large ceiling fan motor would be ideal for this. They start real slow and top out at about the speed you want.

    eric
     
  3. Wendy

    Moderator

    Mar 24, 2008
    20,766
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    Depends, is this powered by 120VAC or DC (12V)?
     
  4. timetraveler

    Thread Starter New Member

    Aug 18, 2009
    2
    0
    I have not determined that. The power to the Machine will be 120VAC but I could use a power supply (transformer?) to go to DC if there is any advantage to using DC over AC. It is important for the motor to be quite. Some noise is ok but I don't want it to be too loud. Also it seems that there are a good variety of DC controllers. Again, I'm at a loss. Do you know what the advantages, if any, are using DC over AC?
     
  5. Wendy

    Moderator

    Mar 24, 2008
    20,766
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    If you have 120VAC anyhow the ceiling fan motor idea is a good, IMO. They are even brass, which fits the motif.
     
  6. count_volta

    Active Member

    Feb 4, 2009
    435
    24
    Your flux capacitor impedance is too high. It prevents a speed of 88mph ;)

    Sorry I couldn't resist. :D

    Seriously thats a cool project. I love HG Wells. Read most of his books. :cool:
     
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