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Author Topic: Strong platter motor tire Christopher Howland Film Handler Posts: 9 From: Mashpee, MA, USA Registered: Jul 2007 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 ]  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 08-07-2007 12:31 PM                        The first step is to assure that the platter is not warped. If so, repair or replace. If that is OK, then the motor needs to be adjusted slightly upward. (slots in motor bracket.) Louis  |  IP: Logged Christopher Meredith Expert Film Handler Posts: 126 From: Jackson, MS, USA Registered: Apr 2006 posted 08-07-2007 12:32 PM                        The motor assembly can be moved up very easily with a 3/8 wrench.  |  IP: Logged Dustin Mitchell Phenomenal Film Handler Posts: 1865 From: Mondovi, WI, USA Registered: Mar 2000 posted 08-07-2007 04:33 PM                     Or the tire could need replacing. Check to see if its more wore down than the others. If you do have to adjust the motor check the manuals section of this site for instructions.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 02-28-2017 02:30 PM                 It has been 3492 days since the last post.  |  IP: Logged Garry Knapp Film Handler Posts: 50 From: Mississauga Ontario Canada Registered: Oct 2016 posted 02-28-2017 02:30 PM                        anyone have a source for these tires?  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 02-28-2017 04:19 PM                     Hoover vacuum belts works great. What they originally are.  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 02-28-2017 06:50 PM                     It's a standard size O-ring, but I forgot the stock number many years ago. Any O-ring supplier generally stocks all 400 or so standard US sizes. Take a worn one with you and it will be pretty easy to find.  |  IP: Logged Garry Knapp Film Handler Posts: 50 From: Mississauga Ontario Canada Registered: Oct 2016 posted 03-02-2017 03:48 AM                        Found them Global rubber prod (scarborough)  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 03-02-2017 10:02 AM                     Although I mostly do change-over work, at the theaters where they still have platters that are rarely used, I find it's a good idea to jam a small wedge behind the motor bracket to lift the drive tire away from the platter which will keep it from developing a flat spot on one side. I've found that half of a wooden clothes-pin works really well as a small wedge to use for this.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-02-2017 11:31 AM                     Weather its a round one or a flat version its actually a vacuum cleaner belt. Take the bad one to a Vacuum cleaner shop and have them match it up. Having spent lots of time with Bob Potts over the years I have some insight on most of the parts he used including the outdoor patio table tops and Hoover motors and distributor points. The Farm & Fleet patio table tops were only used for the first few years until production outgrew them. Bob also had a nifty folding Honda motorcycle to travel to his destination on when he flew around in his plane. I'm not sure what kind of belt or vacuum motor the plane ran on. Mark  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 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)  |  IP: Logged

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