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Author Topic: Strange damage on SDDS reader Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-22-2005 07:32 PM                     Today was SDDS Penthouse day for me.... 5 in all to look at. Here are a few representative photos of what I normally see as far as wear is concerned....... The amount of film dust a hooked sprocket can generate is amazing... sprocket replacement is a must on just about all the 2000 readers that are still using the plain alumnium sprockets. The sprocket off that penthouse is beyond shot! The back of that same penthouse......... The progressive roller wear that i see so often and that Robbie mentioned in his post. The penthouse still functions ok though. New hard coated alumnium spriocket is shown.  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 03-23-2005 11:00 AM                     I feel dumb asking this, but... Mark, is there evidence of hooking in your SDDSSprocket-1.jpg picture? I don't see it. I see plenty of wear between the teeth, and even on the teeth, but not to the point of hooking. Am I just missing the signs? --jhawk  |  IP: Logged Chris Trainor Expert Film Handler Posts: 161 From: Greenville, RI, USA Registered: Jun 99 posted 03-23-2005 12:39 PM                        Look at the base of the teeth. It's most noticable on the 2nd and 3rd from the left. It doesn't take much to cause problems, but this puppy is pretty bad. Also, the flash and angle doesn't help much, but there really isn't a good way to get a 2D representation of the problem. Mark: damn that's dirty. Most of the ones I"ve seen at least the operator side was pretty clean... tho the inside looked like your pics. --Chris  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 03-23-2005 03:10 PM                        If you pull your fingernail across the base of those teeth, you'll get hooked! Why/how does all that emulsion debris from the hooked sprocket teeth on the operating side get into the back side of the unit?  |  IP: Logged Thomas Jonsson Expert Film Handler Posts: 216 From: Bromolla, Sweden Registered: Sep 2003 posted 03-23-2005 03:37 PM                       Compared to the reader on Marks pictures (the dirtiest piece of equipment I have ever seen!) mine look nice. The sprockets on my readers show almost no wear. All the other rollers do. Any idea what it would cost to replace all the rollers including the sprockets? Thomas  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-23-2005 07:17 PM                     quote: John Pytlak Why/how does all that emulsion debris from the hooked sprocket teeth on the operating side get into the back side of the unit? John, That was the worst sprocket wear I've ever seen! There is a fan up front and it sucks the aor around the soundhead and all the dust travels with it. It enters where the CCD cameras are then the air flow pulls it around and into the back side. The fan then blows it out the front. This one was really nibbling the perfs away! Thomas, Would probably be best to check with your local Cinema Equipment Dealer to see if it can still be repaired. You can also write to Robbie for pricing on the parts and availability. On another note, It might also be possible to get the rollers re-Hard coated (this is a higher grade of anodizing and what was done to these rollers originally). This is possible and I've had it done before but not on this sort of thing. It would have to be tried out. Mark  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 03-25-2005 03:11 PM                     If people would align and thread those to lace up with 1 perforation LESS tension than the red line, that kind of sprocket damage wouldn't be happening like it is. It of course also helps to run FG to stop the shedding and preserve the data track.  |  IP: Logged Thomas Jonsson Expert Film Handler Posts: 216 From: Bromolla, Sweden Registered: Sep 2003 posted 03-25-2005 03:49 PM                       Well, I thought Sony had figured it out all the way, and laced on the red line, as the manual AND the installer told me to do. But, lacing one perforation less makes sense. Are the 3000 series SDDS readers having the same problems? As for FilmGuard, I understand it does miracles to prints. But as far as I know, there is no dealer in Scandinavia. Who do I turn to if I´m interested? Thomas  |  IP: Logged John Walsh Film God Posts: 2490 From: Connecticut, USA, Earth, Milky Way Registered: Oct 1999 posted 03-26-2005 07:39 AM                     I used several 2000 readers, and none looked as bad as the pictures above. While I'm no fan of any Sony cinema product, I feel the operators simply never cleaned that reader. Like everyone else, I've also had endless problems with aligning those rollers; if they are not exactly right, the film wanders off. And those sprockets like to 'sing.' Someone should bring a class-action suit against Sony cinema products, but I'm sure they have lawyers advising them of how to do the absolute minimum without actually breaking the law. I mean, they made the most expensive processor, discontinue most support and replacement parts manufacturing, then charge an outragous amount of money to get what little service and parts are left.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-27-2005 09:58 AM                     But wait...there's more! Now they are showing their 4K digital projector....so what happens if Sony doesn't get enough market share on those? Wanna guess how fast they bail on those and wonder what support they will offer? I would approach Sony very cautiously.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-27-2005 11:30 AM                     But Steve... wait....... theres even more than that.... they can still make use of all the SDDS logos and call it "Sony Digital Display System", of course all those subjected to Sony's unbelievable marketing assholes would call it "Stupid Digital Display System".... Mark  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 03-27-2005 05:33 PM                     To anyone still running those 2000 series readers, try my threading trick I explained above. The sprockets will last indefinitely, there is no more singing and the lateral alignment is easier to set, plus my dropouts went away. Seriously, try it.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-27-2005 09:28 PM                     Brad, Brad, Brad....Sony does it the correct way....just ask them.  |  IP: Logged

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