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Bolex MST Motor 7-pin hot wire... ground wire?


Steve Goodloe

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I have a Bolex MST motor. I am trying to rig it so it can run off the same battery belt that my SR-1 Runs off of, it is a 12v battery belt so i think it will work. However, i cant figure out what pin is the hot and what one is the ground. I have the old Bolex battery but it doesnt work. I tried the Red for Hot and black for ground but that didn't seem to work. Any ideas?

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...i cant figure out what pin is the hot and what one is the ground. ...

 

With the 7-pin Tuchel:

Pin 5 is + (might be red)

Pin 2 is -- (might be blue)

Pins 1. 3 and 4 go to relay contacts so you can select externally between "12v dc during clapper" and "pilot interrupted during clapper." (Pin 3 is switched -- and ground, 1 & 4 are relay contacts.)

Pins 6 and 7 are pilot (might be white and green-yellow) (Pin 6 often grounded)

 

With the 6-pin Tuchel:

Pins 1 & 2 are +

Pins 4 & 5 are --

Pin 3 pilot ground

Pin 6 pilot signal after clapper (Used with the old Nagra III SLO resolver to make a start beep while there was no pilot signal, while playing back the tape.)

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