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Author Topic: Running a 50hz euro projector at 60hz? Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 10-15-2002 12:54 PM                        I just bought a fumeo super 8mm film projector. Im able to find a voltage up converter without any trouble but they do not convert frequency. Will there be any harm to the projector running it at 60hz? Will I notice a slight increase in speed? Thanks!!  |  IP: Logged Jeff Taylor Jedi Master Film Handler Posts: 601 From: Chatham, NJ/East Hampton, NY Registered: Apr 2000 posted 10-15-2002 01:54 PM                     Putting aside issues with the electronics (I'm assuming it's a sound projector?), the odds are it has an induction motor which will vary in speed from 50 to 60 hz. Typically, however, consumer 8 and 16 mm machines generally have dual pulleys so you can flip the main drive belt from one to the other to compensate for the speed difference. If not you'll have to see if Fumeo can supply a different pulley set.  |  IP: Logged Paul G. Thompson The Weenie Man Posts: 4718 From: Mount Vernon WA USA Registered: Nov 2000 posted 10-16-2002 12:02 AM                     It will run just a little faster. You might notice a slight change in pitch of the dialog. It might sound like a guy that just had the unfortunate displeasure of being emasculated. I don't know about 8mm machines, but some 16mm machines have a communtator/brush (AC/DC motor) that has a governor on it. If yours is equipped with a governor, you will not see any change of film speed.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 10-16-2002 09:08 AM                     You'll also get through all those sleepytime family films alot faster!! Mark  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 10-16-2002 09:14 AM                     If you can't get a new set of pulleys and the speed change is quiet noticable then you need to get a small inverter to run the unit off and set it for 50Hz  |  IP: Logged Peter Hall Master Film Handler Posts: 314 From: London, UK Registered: Dec 2000 posted 10-16-2002 12:44 PM                        Assuming it's a true 3p motor then you can run with an inverter - if an async motor look at mechanical solutions. Would disagree with the "slight pitch change" comment - the variance being 5/6 or 6/5 - it's quite noticeable .. Any known music and the audience (OK, 8mm, audience of 2 perhaps !!) will scream  |  IP: Logged Stephen Furley Film God Posts: 3059 From: Coulsdon, Croydon, England Registered: May 2002 posted 10-16-2002 01:47 PM                     I don't know the inside of the Fumeo machines, but there may well be some sort of mechanical adjustment inside; if not, and if the thing is belt driven, which is quite likely, find someone with a lathe, and get them to turn you up a suitable pulley(s). If there is a belt tension adjustment, or if one pully is much larger than the other, you may get away with just changing the smaller one. If both pulleys are of similar size, you will probably have to replace both, making one larger, and the other smaller, to keep the belt length the same.  |  IP: Logged Matt Close Expert Film Handler Posts: 226 From: Hervey Bay, QLD, Australia Registered: Sep 2001 posted 10-18-2002 04:16 AM                        Have to agree with Peter on the speed increase being noticed ..... I even hate having to watch PAL DVD's after having become very familiar with sections of films we have shown here..... I imagine the change from 50Hz to 60Hz would be even more distracting  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 10-18-2002 04:14 PM                     Never sen a Fumeo 8mm, but am very familiar with the 16mm machines. Generally the 16's have double pulleys to change between sound and silent speeds, nothing at all to do with 50/60Hz. I doubt greatly it'll be a 3ph motor, very few of the 16s had 3ph motors.  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 10-19-2002 05:54 PM                        Thanks for all the replies. There are plenty of voltage convertors on the market but none will convert frequency. Anyone know of a frequency convertor? Thanks!  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 10-19-2002 08:54 PM                     There are tons of motor drive controllers out there Allen Bradley Bodine Leeson all make frequency drives  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 10-21-2002 10:41 AM                        Some links: http://www.surplusrecord.com/sre/drivesag.htm http://www.motionnet.com/cgi-bin/search.exe?a=cat&no=1132 http://www.trainingtechnology.com/technicaltrng/VFD/VFD640.htm http://www.intellectcontrols.com/site.php3?page=course_motdriv.ext ------------------ John P. Pytlak, Senior Technical Specialist Worldwide Technical Services, Entertainment Imaging Research Labs, Building 69, Room 7525A Rochester, New York, 14650-1922 USA Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243 e-mail: john.pytlak@kodak.com Web site: http://www.kodak.com/go/motion  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 10-21-2002 11:28 AM                        Thanks Gordon and John for the links.  |  IP: Logged

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