ARRIFLEX 16ST/16M motors

[Stéphane Mandelkern]

Hi everybody,

I just bought 3 motors en eBay :

- 1 single speed 24 im/s

- 1 Perfectone type MC3

- 1 Crystal sync with its module Tobin TXM-7 (not TXM-17)

The latter 2 are not described on the site Arri16S.com. Does anyone knows their specificities ?

The single speed 24 im/s doesn't work. I am to dismantle it with a tuto I found on this forum but before, I wanted to know why it has 2 electric poles whereas the variable motor I also own has only one pole.

Thank you for your information.

 

[Duncan Brown]

18 hours ago, Stéphane Mandelkern said:

The single speed 24 im/s doesn't work. I am to dismantle it with a tuto I found on this forum but before, I wanted to know why it has 2 electric poles whereas the variable motor I also own has only one pole.

The other pole should just be ground, same as the outside case.  I have a handful of Arri 16 motors and some have one pole, some have two, and some look like they were set up to have two but that area is taped over.  I'm not sure what Arri was up to but I figure at some point some piece of equipment used that second pole for the ground connection instead of relying on the case.

Duncan