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Author
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Topic: Strong platter motor tire
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Christopher Howland
Film Handler
Posts: 9
From: Mashpee, MA, USA
Registered: Jul 2007
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posted 08-07-2007 09:00 AM
Hello everyone, I've been reading the forums every day but i now finally have a problem of my own. I've had an interesting problem with one of my strong platter systems. The top platter motor tire cannot get a grip in the underside of the platter. When i start a film and the top platter is taking up, it either takes too long to get a grip and the dancer drops, tripping the failsafe, or the dancer drops so low the motor spins up really fast and raises the dancer all the way to the stops, which pulls the film off of the bottom lower roller on the projector if i don't hold it. This also applies when the top platter is paying out.
Is there any adjustment or something i can do so the motor tire doesn't slip so much on the platter?
It looks like the tire is not putting enough pressure on the underside of the platter
Any help you could give would be great. This site has been an amazing wealth of information so far.
On a side note: I changed my second bulb in my career a few days ago; a little intimidating, but it went smoothly, hehe [ 08-07-2007, 10:56 AM: Message edited by: Christopher Howland ]
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Jim Cassedy
Phenomenal Film Handler
![](http://www.film-tech.com/ubbmembers/4115a.jpg)
Posts: 1661
From: San Francisco, CA
Registered: Dec 2006
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posted 03-02-2017 01:36 PM
I just realized the comment I made about 'wedging' the motor applied to Christie, and not Strong platters. But releasing the motor tension on either a Strong or Christie platter when it's not going to be used for an extended time is a still a good idea, to avoid getting 'flat spots' on either the Strong 'tire' or the Christie rubber-thingy on the motor shaft.
Here in San Francisco, there's a place ("Murphy & Simi Co")in the commercial district that stocks wheels & wheel bearings for just about any device you can think of. Larry Speer, a long time talented SF theater tech, found a wheel there that was a perfect match for (and much cheaper than) the Strong platter "tires" & always kept a few extra ones around as spares.
I wish I had gotten the Murphy & Simi part number from him, since M&S stocks literally thousands of different size wheels, axles, & bearings, etc . . so picking through their stock bins without the part number would be an all day task.
(No, I can't ask Larry. Unfortunately he passed away suddenly about a year ago. He was a great tech, and a good friend)
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