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Author Topic: My Big Bulge Peter Kerchinsky Master Film Handler Posts: 326 From: Seattle, WA, USA Registered: Jan 2002 posted 07-28-2002 04:32 AM                     Joe I heard once that some platter tables were actually run on air pushing the flanges below the decks. If Scott Hicks in Portland, OR. reads these threads he would know. Scott, tell me this was true!  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 07-28-2002 12:12 PM                    yes it is true. There used to be platters that used air to move the decks.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 07-28-2002 08:15 PM                     One of Potts early efforts for Simplex was the Air-O-Matic that used a vacume cleaner blower(I wonder where the link to vacume cleanrer motors came from) to propel the vains on the bottom of the platter  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 07-28-2002 08:48 PM                        It seems like the manufacturers of platters are in love with vacuum cleaner parts. The platters should be able to transform into a working vacuum cleaner and vacuum the booth on their own. Revelation: The people who designed these types of platters used to be janitors, since all they know are vacuum cleaners.  |  IP: Logged David Favel Jedi Master Film Handler Posts: 764 From: Ashburton, New Zealand Registered: Feb 2002 posted 07-28-2002 09:12 PM                     Or perhaps a film cleaning device is about to be launched. Considering the debate between PTR's & Filmguard a combination platter/vacuum film cleaner would be cost effective as most of the equipment is pre-installed.  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 07-28-2002 09:45 PM                     Bob Potts picked the vac motors due to their low cost and figuered they would give a long service life, bearing wise, since they where designed for high r.p.m. and to stall without a hassle. Richard Fowler TVP-Theatre & Video Products Inc. www.tvpmiami.com  |  IP: Logged Matthew Bailey Master Film Handler Posts: 461 From: Port Arthur,TX Registered: Sep 2000 posted 07-29-2002 09:42 AM                     I think my solution would be adding a rheostat to each motor on an ORC & figuring out a way to use felt in place of the drive puck or O ring or better yet, design & install a friction clutch on the input or output shafts of the motors.  |  IP: Logged Ken Lackner Phenomenal Film Handler Posts: 1907 From: Atlanta, GA, USA Registered: Sep 2001 posted 07-30-2002 11:55 AM                     quote: I heard once that some platter tables were actually run on air pushing the flanges below the decks. I would think that would cause the deck to run at an uneven speed: the air is blowing, and along comes a flange to catch the gust of air. The platter speeds up. But as the flange gets farther and farther from the source of air, the platter would gradually slow down, until the next flange comes along, at which time it would speed up again. How would they keep the speed constant?  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 07-30-2002 01:04 PM                     The Simplex Aeromatic platter, also designed by Bob Potts, used air drive motors ( like oil hydralic motors but air ). A pipe blowing on the fins would be a little goofy Richard Fowler TVP-Theatre & Video Products Inc. www.tvpmiami.com  |  IP: Logged Don Sneed Master Film Handler Posts: 451 From: Texas City, TX, USA Registered: Aug 2001 posted 07-31-2002 09:46 AM                        I service a few of these in my time, it was a different idea that didn't work, or at least in my area, I was always there to service these, I hated these platters until I found out I could make alot of money trying to keep these running (same hold true for the Ballantyne Pro-35), needless to say these platters was not in the booth for more than a year when they were replace & was haul to the junk yard !!! or stored behind a screen...  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 07-31-2002 06:24 PM                        ALL old junk should be stored behind the screen. That's the perfect place for it. NEVER throw ANYTHING away!  |  IP: Logged Steve Kraus Film God Posts: 4094 From: Chicago, IL, USA Registered: May 2000 posted 07-31-2002 06:50 PM                    What was/is the arrangement between Bob Potts and Design & Manufacturing? He designs a platter, contracts a factory to build it, and they then start selling essentially the same design to a competitor (which years later acquires the factory)? I presume there is a royalty arrangement but I don't know. What is the story there?  |  IP: Logged

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