I am working on a project where I was seeking some low-cost gearmotors. They will be attached to a winch system that would lift a fairly light load. The system needs some position control, and I was hoping to use a simle multi-turn potentiometers.
I recently purchased some gearmotors intended for kid's ride-on toys. Here is the link to them.
But, I really don't recommend that vendor. They indicate they are in California, but in reality they are in China, and like most of the electronics vendors on E-bay, they give you the run-around for any issue or question. The motors are simply shipped in bags, and get damaged in shipping. They seem to just have an auto-responder that says, "We have sent the problem to the related department to have a check, but we did not receive the reply at the moment, could you please contact us tomorrow to remind us?"
Here are the specs for the system that I created by either personally measuring it, or info from the motor part#.
Motor: DL 550-C, 12v 12,000 RPM (measures 18,000 unloaded)
Motor Torque: 70.55 Oz-In
No Load Current: 1.40 A
Stall Torque : 69.16 Oz-In
Stall Current: 85 A
Shaft Dia 3.175mm
Output from gearbox: 119 RPM Gear ratio 97.75:1
Calcllated force at the output when stalled: 895 Oz-In, drawing a current of 69 A.
Anyway, I am trying to find a way to use this low-cost gearbox and add position control. Is anyone aware of a similar project?
Maybe I should just take the motor out, and 3D print some timing belt pullies. One pullie for the winch spool, and another for my multi-turn pot.