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Author Topic: The best 35mm projector Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-21-2007 04:09 PM                     Well, as I always said... it sounds great when it works! At least this IS true of the 20000 systems but the 3000's have been trouble free for the most part. We have replaced a few 3000's with 650's because of lack of rebuilt boards from Sony. I call it the Dolby Syndrome... no one sends the core back! Actually we have quite a few 8 channel systems that we want to keep running as long as there are films with tracks. Others do as well... and there are thousands of other 3000 owners out there that already do or will need the sprocket! Its a real oddball... Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 07-21-2007 08:03 PM                     Mark...are you just having the sprocket made or the sprocket assembly? That is...you are having the piece that is held on via a series of screws going around the inboard side of the sprocket? We too have SDDS units (mostly 2000s but some 3Ks) that we are keeping going. We've been fortunate that we were able to be in the right place at the right time to land several parts units to have a decent supply to keep our customers going. In fact we have both a 2K and a 3K field kit with all the boards. Steve  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-21-2007 09:47 PM                     Just having the sprocket made. The holes will be drilled and tapped by LaVezzi for the original metric screws to allow the re-use of the tach generator attachment on the back side. The screw holes will be in the exact same position relative to the teeth. New bearings will be supplied with each sprocket. The specs of the sprocket teeth and such are the same as the 35mm VKF sprockets we had made for the DP-70 in other words hardened stainless steel. We have close to a dozen 3000 units on 8 channel systems and several more 2000 units on 8 channel as well that we will keep in place and then there are those customers that simply cannot afford to replace those units yet. I think we have close to 35-2000/3000 processors in all still in service... Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 07-21-2007 10:01 PM                     Mark...have you tested your sprocket yet? Any chance that the steel sprocket will interfere with the mag-clutch system? I'm wondering if a hardcoat aluminum sprocket wouldn't be a better choice...the ones we put on the 2000 series readers run super-quiet too (once you properly align the reader). Steve  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-22-2007 10:27 AM                     quote: Steve Guttag Any chance that the steel sprocket will interfere with the mag-clutch system I appreciate you mentioning that and I will run some more tests this week just to be sure but I doubt any trouble will creep in. If it does we can go to alumnium still with VKF teeth. In the 2000 penthouse I'm not so sure thats really a magnetic clutch system... they may have called it that but in reality its more like an eddy current motor thats driven by an oscillator. Not unlike an eddy current take up motor on a tape deck. It even looks like one and no eddy current motor ever de-maged any tape. The penthouses will actually work with out that motor even connected, or with the motor connected but no flywheel but stability is crap although playbeck is fine. All it serves is to further smooth things out in the tight loop system. Even if there were much of a stray field generated by it there is a pretty good distance between them and the custom sprockets are stainless steel. I had a plain ole steel sprocket(adapted Motiograph 32 tooth) on a 20000 reader once in an emergency and it worked fine. The buzz issue for me was never an issue...drove the customers nuts though, especially once the sprockets became badly hooked. I'm sure that you've heard many different types of dubbers running before and the buzz with them is a constant while film is in motion. Although the hard coated sprockets for the 2000 do run quieter for sure, the alumnium oxide coating is actually a dry form of lubricant. Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 07-22-2007 10:48 AM                     Mark, I was actually referring to the 3000 series of reader using a Mag-clutch system...not the 2000 series...for which a decent sprocket does exist off-the-shelf...so to speak. If your sprocket is to be stainless, then there wouldn't be a magnetic issue. We still have enough factory sprockets to serve our needs but one never knows and the AFI/Silver has 3000 series readers with DFP-D2500 series decoders (relatively rare) that we will try to keep going as long as possible...they have two out of three theatres with 8-channel sound systems (THX approved too). Steve  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-22-2007 10:56 AM                     They are no in stock yet.... 8 week lead time. But if you need any just call and let Vince know.... Mark  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 07-23-2007 03:22 PM                        quote: Gordon McLeod actually the BACP reader has been used on the mega machines like that but the best is the sondor http://www.sondor.ch/soundhouse.html I just looked into this. They are a UK company ( our dollar really takes a hit, ouch ) with one US distributor. Sadly as much as it would have been a great solution for my Devry I cannot justify its cost. I could buy a used projector, current model with BACP for the same money which I think for myself would be the wiser choice! Thanks for the link though, its still nice to see there is a solution had I decided to go that route.  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 07-23-2007 05:16 PM                     Sondor is Swiss...pricy even when our dollar was worth more  |  IP: Logged Ken McFall Jedi Master Film Handler Posts: 615 From: Haringey, London. Registered: Apr 2001 posted 07-23-2007 07:34 PM                     Silly question..... but here goes anyway. I've seen an excellent installation of Sondor's in Londons West End, done by Tom Pain beautiful install and very nice machine but why does it look exactly like a Kinoton FP20? Side by side you could not tell the difference. What's the story here?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 07-23-2007 07:44 PM                     the sondor is an electronic intermitent machine and I beleive they have a rotating prism continous motion version or that may have been perfectone  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-23-2007 08:09 PM                     I'd bet that Sondor Analog head costs as much as a new Pimp'n Caddy does! Also, I'm still missing why exactly you would want to read the analog sound from above rather than below... If you go back and look at some of the older Phillips and Bauer 35mm stuff you find that they made stanf along 35mm analog reproducers... No drive in them at all, just the rotary stabilizer and lateral guide roller, optics... all the drive was provided by the projector's lower 32 tooth sprocket. I use a small Phillips sound reproducer from an FP-56 with my dubber in the shop to feed stereo processors when I work on them... Mark  |  IP: Logged Alan Gouger Jedi Master Film Handler Posts: 501 From: Bradenton, FL, USA Registered: Jul 2000 posted 07-23-2007 10:29 PM                        Not only do you purchase the sound head assembly but you have to buy their interface cables and their special pre amp. I did not get pricing on the preamp which may contain the delay but the price for the sound head alone without DTS or DD scared me enough to not bother asking about the preamp. I was expecting this to cost around 2k at most. This would have been a simple solution for my Devry. Mark something like that would work great unless I would end up with a lot of flutter. I could place something in the top of the take up department. I run the film down to a roller at the bottom of the pan and out to a double mutt. There must be a solution to allow me to get stereo out of this puppy without re tooling its own sound pickup..  |  IP: Logged Richard Hamilton Phenomenal Film Handler Posts: 1341 From: Evansville, Indiana Registered: Jan 2000 posted 07-24-2007 05:52 PM                     Mark, With the Mega, we really had no choice for the 35. They wanted the 35 option available as a kit so existing theaters could buy them. It still meant a trip from Mega to make the initial changes to the machine. When we had to come up with a delay unit, there was a group of us standing around the projector and I asked "how long of a delay? About 2 seconds? That's easy!" I sat for a second looking deep in thought and said "Just run the signal through 980 feet of wire and by the time it gets to the processor, it's delayed!" one tech was thinking about if it would work, the machinist asked me if it would work, and the other tech looked at me and said I was so full of shit, just as me and my boss busted up laughing. Then I heard a couple of "you mother fucker Rick"s as I was leaving the room. Rick  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-24-2007 06:56 PM                     Rick, I can definately understand putting it on the Mega but not on a DeVry! The DeVry is not difficult to convert to stereo/reverse scam. Lets see 980 feet.... about 2 microseconds mabie.... When I worked at the TV station and we built the new facilities we actually timed the fixed station equipment by adding or subtracting coils of wire to the 3.58mhz from the sync generator. We ended up with thousands of feet of wire coiled up under the raised floor but it worked well and was alot cheaper than a proc. amp for each piece of gear. The cameras (TK-45's) didn't need it as they had color phase adjustments on the CCU's. Mark  |  IP: Logged

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