Results 1 to 7 of 7

Thread: Attaching a head to a DC motor

  1. #1
    Variable Bitrate super-fly's Avatar
    Join Date
    Feb 2006
    Location
    NJ
    Posts
    256

    Attaching a head to a DC motor

    I want to attach a servo head(one of those X shaped ones or a large circular one) to a dc motor with a high torque gearhead. I want to transfer the rotary motion of the motor to linear motion to drop a shelf about 2 inches. I didnt really want to use a serve because I just want to put it on a three way switch to lower and raise it when I want. Any ideas as to how I would securely attach one of these heads. Also do dc motors with gearheads have holding torque with no power going to them?

    Thanks

  2. #2
    Constant Bitrate Volsfan's Avatar
    Join Date
    Jan 2006
    Location
    Kingsport, TN
    Posts
    112
    http://www.servocity.com/html/3-12v_gear_motors.html

    Check that out, and the gearhead should hold just fine
    Tennessee Vols Fan

  3. #3
    Variable Bitrate super-fly's Avatar
    Join Date
    Feb 2006
    Location
    NJ
    Posts
    256
    Cool...thanks. I just want to make sure that it will hold, I'd rather not have to use any sort of latch or anything...it will be holding about 3 pounds.

  4. #4
    Constant Bitrate
    Join Date
    Oct 2005
    Posts
    120
    No, not on their own - they do not hold torque. Sometimes the friction in the gears, or the direction resists motion but they are not like a servo.

    Quote Originally Posted by super-fly View Post
    Also do dc motors with gearheads have holding torque with no power going to them?

    Thanks

  5. #5
    Variable Bitrate super-fly's Avatar
    Join Date
    Feb 2006
    Location
    NJ
    Posts
    256
    hmmm...do i have a better option. Linear actuators are too much. I was thinking a power door lock actuator, but i think it would move too fast and it would not give me enough linear motion either. I don't think I can use a power antenna motor cause i dont have a ton of space. I wanted to stay away from a servo cause then i have to get a controller for it and everything. I was trying to stay simple.

  6. #6
    Constant Bitrate Volsfan's Avatar
    Join Date
    Jan 2006
    Location
    Kingsport, TN
    Posts
    112
    I guess it would depend on what gear ratio it is. Mine are 12vdc, 4 rpm's and hold just about anything I can attach. The bracket would break before the motor reverse
    Tennessee Vols Fan

  7. #7
    FLAC evandude's Avatar
    Join Date
    Mar 2005
    Location
    Maine
    Posts
    937
    If you use a motor geared with a worm gear, then it should hold just fine.
    But don't take it from me! here's a quote from a real, live newbie:
    Quote Originally Posted by Viscouse
    I am learning buttloads just by searching on this forum. I've learned 2 big things so far: 1-it's been done before, and 2-if it hasn't, there is a way to do it.
    eegeek.net

Similar Threads

  1. Wiring up to tape head circuit.
    By Scouse Monkey in forum Car Audio
    Replies: 18
    Last Post: 07-30-2009, 04:40 PM
  2. Remote Head unit Eject Problem FIxed!
    By Sporttracguy in forum Car Audio
    Replies: 0
    Last Post: 10-02-2004, 02:51 PM
  3. Inverter vs DC to DC
    By MattPociask in forum Power Supplies
    Replies: 6
    Last Post: 05-01-2004, 04:10 PM
  4. DC to DC converter
    By jdub421 in forum Power Supplies
    Replies: 3
    Last Post: 02-03-2004, 04:17 AM
  5. Cheap head units ok? Which ones?
    By ncfoster in forum General Hardware Discussion
    Replies: 1
    Last Post: 12-19-1999, 10:27 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •