Arri 16s motor test.

[joshua fry]

Hi,

Fired up my 16s does not seem to be working I can hear a very faint click. Would like to test the motor I understand I can run power to it directly. I understand the small round pin is positive where is the negative? do I just need to connect it up to the positive and negative to check it? many thanks

[Mark Dunn]

The battery sleeve (between your fingers, the bit with the protruding pin) is the negative.

[joshua fry]

great thanks. managed to get the motor working but its only seems to work on low setting like one and then I crank it up its good until stopped then have to return to 1. also the `FPS clock doesn't seem to work. many thanks

[Fabian Schreyer]

You are probably running the motor backwards. When you do so, the tachometer will stay at 0 fps.

[joshua fry]

thanks I will check this out 

Edited January 16, 2024 by joshua fry

[Duncan Brown]

(Zombie thread, but I just noticed it)

The variable resistor built into the rotating cap of that motor can get very flaky after all these years.  If you take it apart, clean up the windings and the contact point, ever so slightly shift the contact so it's running on a slightly different path, and manage to get it all back together again without breaking anything, it will probably work a lot better.  I'd smear a thin film of contact grease on there too.

Duncan