I am building what is essentially a motorozed clothesline. The length of the clothesline is 5 ft long (~10 feet of rope).
I intend to connect a DC motor (reversible) to the axle of one of the spindles to make the clothesline move forward and back. The clothesline will not have more than one item on it and the items will weight less than 1 pound. The item on the clothesline should be able to move from one end to another in about 4 seconds. The diameter of the spindle is 2.25 inches. As such, the RPM needs to be about 127 RPM by my calculations. The motor need to be small and light (less than a pound, hopefully just a few ounces) and hopefuly less than $20US, and can be up to 12VDC.
I tried this with a motor I removed from a tape deck, and it did not have nearly enough torque to get the job done.
My questions are:
1) Does a motor exist that fits my requirements? What torque do I need? 2) Where can I buy just one? 3) How can I best connect the spindle (which has a .25 hole in it) to the motor shaft? 4) Is there any type of motor I should use or stay away from (stepper, etc)?Thanks in advance for your consideration.
Ed