Cinema Products Motor pin layout?

nathan snyder · December 15, 2005

I just received what was described as a Cinema Products Crystal Sync motor in the mail. I won it on ebay. Here is the auction listing: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...AMEWN%3AIT&rd=1

Can anyone help me with the voltage requirments and which of the three pins to apply the voltage to?

Here is a photo:

http://owyheesound.com/hotlink/cp_motor_power_INPUT.jpg

I generically labled the pins for easy reference.

I would like to use this motor to finish this ( http://thislovelymachine.com/clips.htm ) prodution. Those clips are using a arri variable speed motor that is to "wild" to make referrence audio recordings for ADR. I am using a Mitchell BNCR for the sound stage shots but I have lots of tricky hand held shots that only my Arri II will work for. So I need to get this crystal motor running.

Any help would be appreciated.

Nathan Snyder

Nick G Smith · December 16, 2005

I have a CP model CRA-6A Xtal motor for my 2C - 24/25fps. The motor states on it 16-24v. I have run it on 13.2v and 24v and it works fine. As regards your photo of the pins my motor is Y+ X- for voltage. Hope this helps. Nick

nathan snyder · December 16, 2005

Thanks Nick!

There is not any make, model or serial number anywhere on this motor. I have taken the sleave (motor housing) off the motor and still have found nothing. Does anyone know a way to properly identify this motor?

nathan snyder · December 23, 2005

Well, the motor does not run. But, I have finally come up with the schematics for the CRA-4 and CRA-6A. So, I am going to get the motor repaired. If anyone ever needs a copy of the schematics just let me know.