Jump to content


Photo

Arri 16S Torque Motor


  • Please log in to reply
6 replies to this topic

#1 Gino Terribilini

Gino Terribilini
  • Basic Members
  • PipPip
  • 75 posts
  • Student
  • Long Beach, CA

Posted 23 April 2006 - 09:18 PM

Got a bit of a problem here... my 16S' torque motor died. Well, not totally, but its just as useless. The torque motor had worked fine with the 400' spools for about 600', then got jammed, then 150' later, it jammed again, then 1/2 that much, it jammed again. So I opened it all up and the take-up side is not working. I tried changing the motor and torque motor to reverse and that side wouldn't work. I set it back to forward, and turned it on, then spun the take-up side and it started working. But after about 75', it stopped again and when I went to spin it up, it still wouldn't work.

When I try to spin the take-up spool manually wile the camera is not off, it kind of jerks forward while i'm spinning it like its making a connection, then losing it, then making it, then losing it, etc. Have any of you heard of this? Do any of you have a 12v torque motor you would be willing to sell or (and I know i'm going out on a limb here) let me borrow? I have a shoot this weekend and i'm cameraless... any thoughts?

Note: I had just had my camera checked out and they said it was fine. The torque motor and camera had recently been converted to 12v.
  • 0

#2 Tim Carroll

Tim Carroll
  • Sustaining Members
  • 2165 posts
  • Other
  • Chicago, Illinois

Posted 23 April 2006 - 11:34 PM

I had just had my camera checked out and they said it was fine. The torque motor and camera had recently been converted to 12v.


By whom? Who converted the torque motor and who told you it checked out fine?

-Tim
  • 0

#3 Gino Terribilini

Gino Terribilini
  • Basic Members
  • PipPip
  • 75 posts
  • Student
  • Long Beach, CA

Posted 24 April 2006 - 03:58 AM

By whom? Who converted the torque motor and who told you it checked out fine?


I bought the torque motor separately from the camera. There is a sticker label on the torque motor that says, "VISUAL PURSUIT, 12 VOLT" on it.
I take my camera to Alan Gordon (a film equipment rental/ store/ service place next to Paramount studios) to get serviced and everything. Following the conversion, they said everything was in order and the camera worked fine. I asked them to varify that the motor had indeed been converted to 12v and they said it had.

Edited by Gino Terribilini, 24 April 2006 - 04:01 AM.

  • 0

#4 Clive Tobin

Clive Tobin
  • Basic Members
  • PipPipPipPip
  • 402 posts
  • Industry Rep
  • Spokane Valley, WA, USA

Posted 24 April 2006 - 06:08 PM

Got a bit of a problem here... my 16S' torque motor died. ...


Is the ground wire connected? To prevent just this sort of problem, the later torque motors have a little jack on them, to use for connecting a ground wire to either the camera body, or to a little socket on the negative side of the back of the power plug.

Without it, the motor can run intermittently if there is not a clean unpainted un-dirty un-oily power return path from the torque motor to power minus.
  • 0

#5 Gino Terribilini

Gino Terribilini
  • Basic Members
  • PipPip
  • 75 posts
  • Student
  • Long Beach, CA

Posted 26 April 2006 - 01:02 PM

Is the ground wire connected? To prevent just this sort of problem, the later torque motors have a little jack on them, to use for connecting a ground wire to either the camera body, or to a little socket on the negative side of the back of the power plug.

Without it, the motor can run intermittently if there is not a clean unpainted un-dirty un-oily power return path from the torque motor to power minus.


Is this the jack you are talking about? The s/n is 7843.

Posted Image


Edited by Gino Terribilini, 26 April 2006 - 01:02 PM.

  • 0

#6 Gino Terribilini

Gino Terribilini
  • Basic Members
  • PipPip
  • 75 posts
  • Student
  • Long Beach, CA

Posted 26 April 2006 - 01:15 PM

If so, could I connect a wire from that jack to the negative terminal of the old battery plug on the camera (the 2-pin plug) and establish a successful connection?
  • 0

#7 Clive Tobin

Clive Tobin
  • Basic Members
  • PipPipPipPip
  • 402 posts
  • Industry Rep
  • Spokane Valley, WA, USA

Posted 26 April 2006 - 07:45 PM

If so, could I connect a wire from that jack to the negative terminal of the old battery plug on the camera (the 2-pin plug) and establish a successful connection?


This is it.

The official Arri S power cords have a jack on the back that this jack can connect to. Some aftermarket ones lack this. Make sure you connect to the negative side if rigging up something else.

You could also have an intermittent connection inside the motor.
  • 0


Wooden Camera

Gamma Ray Digital Inc

Media Blackout - Custom Cables and AKS

rebotnix Technologies

Ritter Battery

The Slider

Tai Audio

Willys Widgets

Abel Cine

CineLab

Aerial Filmworks

Paralinx LLC

Rig Wheels Passport

CineTape

Glidecam

Opal

Visual Products

Technodolly

Broadcast Solutions Inc

FJS International, LLC

Metropolis Post

rebotnix Technologies

Rig Wheels Passport

CineLab

CineTape

Metropolis Post

Abel Cine

Tai Audio

Willys Widgets

Paralinx LLC

FJS International, LLC

Opal

Broadcast Solutions Inc

The Slider

Wooden Camera

Technodolly

Ritter Battery

Gamma Ray Digital Inc

Aerial Filmworks

Visual Products

Glidecam

Media Blackout - Custom Cables and AKS