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Author Topic: Projectors RCA FR-35 DP and KN-15 Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 08-08-2006 08:55 AM                     I well know KN-15(17 - two projector version with changeover) and TK-35 projectors. Recently i upgraded two KN-17 to red light so they can read cyn films, only problem is that i have to change slit lenses and photo diodes, because original was not so sensitive to red light spectrum. And slit lenses have no slit mask, slit image on film is actually image of exciter lamps filament (4V, 0,75A) this is very very bad thing about this machines. TK-35 was made based on KN-17 but is much better machine, and also have very good sound head so is easy to convert to cyan and stereo, also TK-35 is less noisy than KN-17 which is important if You don't projecting from bot! If somebody is interest I can upload some pic here?  |  IP: Logged Clive Carmock Film Handler Posts: 24 From: Morden, Surrey, UK Registered: Dec 2004 posted 08-11-2006 04:44 PM                     Marin - I have a TK35 which I have converted to stereo using a cell from a Westrex 7000. This works very well. I would like to change the light source to red LED or Laser. As you say there is no slit in this machine - but an arrangement of prisms and ground glass. How did you install the red light srouce? I find the Tk35 runs smoothly, and is very gentle on film. This model does have the wooden pressure runners and felt runners on the aperture plate, but the gear is metal. Does anyone know if different ratio aperture plates are available for this model? regards Clive  |  IP: Logged Stephen Furley Film God Posts: 3059 From: Coulsdon, Croydon, England Registered: May 2002 posted 08-11-2006 05:08 PM                     quote: Mark Gulbrandsen I agree with Richard. The grars on my pair of KN's are very definately made from wood. Large gears, in things like watermills, often had gears with teeth made of wood, inserted into the wheel, and which could be replaced when they wore, but how can you make an entire gearwheel out of wood? If you simply cut out a circle and machined the teeth on it then some of the teeth would have the grain running in the wrong direction, and would almost certainly break off. Was the wheel built up from small segments, with just a few teeth on each, so that the grain was almost radial on all teeth, or were the gears laminated, or what?  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 08-12-2006 04:37 AM                     quote: Clive Carmock I would like to change the light source to red LED or Laser. As you say there is no slit in this machine - but an arrangement of prisms and ground glass. NO, TK-35 have slit inside of sound optic, and You can see slit when you remove exciter lamp holder! Projector that doesn't have slit in optic is KN-17/15!! For LED or Laser, just use similar with projectors which have same exciter lamp like in TK-35, but You can't use that laser that hold directly on sound optic, because You can't attach that to TK-35 optic, You must use something like JAXLight that hold on exciter lamp holder.  |  IP: Logged Christian Appelt Jedi Master Film Handler Posts: 505 From: Frankfurt, Germany Registered: Dec 2001 posted 08-15-2006 11:25 AM                     Marin, in fact the KN15/17 machines are based on Zeiss Jena's TK-35 which came out in 1947, just like that 35mm portable from India (forgot the name). Paul, TK-35s were in wide use for mobile theatres in East Germany until the Berlin wall came down in 1989. They still are popular among film collectors and people who like to tinker with lamp systems and sound readers...actually, the TK-35 is not a bad piece of machinery. Look here for some modifications (large reels, stereo sound, quartz lamps): http://gallery.filmvorfuehrer.de/view_album.php?set_albumName=TK-35 and a restored pair with pics of the maltese cross movement: http://gallery.filmvorfuehrer.de/view_album.php?set_albumName=Album-thomaskino-TK35 It is extremely small, but not very gentle on film (although not nearly as bad as some Italian portables). Spare parts are available because so many TK-35s were sold from military storage, so it is quite easy to get any part you need. The problem with all TK35 clones is the path of light which makes it hard to get sufficient brightness on the screen. If you need any advice on TK35, post your question here: www.filmvorfuehrer.de and click on FORUM > ALLGEMEINES BOARD, then on button NEUES THEMA.  |  IP: Logged Clive Carmock Film Handler Posts: 24 From: Morden, Surrey, UK Registered: Dec 2004 posted 08-15-2006 04:07 PM                     Christian, do you know if anyone can supply alternative aperture plates for the TK 35? I only have a full frame one at present. I hoped Wittner might have them, but it seems they don't. I see they now have a bracket to fit a stereo cell into the TK 35. Some time ago I used part of an old speaker bracket to make a mounting plate to achieve the same. Do you know anyone that has tried the Wittner red LED exciter lamp replacement for this machine? Regards Clive  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 08-15-2006 04:54 PM                     Don't know about Wittner, but mine is working realy fine! Stereo cell holders is best to do homebrew is YOu can supply You're self a stereo solar cell chip and is easy to do!  |  IP: Logged Christian Appelt Jedi Master Film Handler Posts: 505 From: Frankfurt, Germany Registered: Dec 2001 posted 08-21-2006 07:53 AM                     Clive Carmock wrote quote: Clive Carmock Christian, do you know if anyone can supply alternative aperture plates for the TK 35? I only have a full frame one at present. I will ask some TK35 owners I know whether they have aperture plates. Did you just check Wittner's website or did you ask especially for aperture plates? They do have some spare parts in their catalogue, like the wooden pressure pads in the film gate, sprockets and lamp mirrors. UPDATE: Just spoke to a friend of mine who has several TK35 machines. He may have some spare aperture plates. Please check that you have the later model of TK35, the first series does not have interchangeable aperture plates because the original 1947 design did not call for wide screen formats. I heard that even in the 1960/70s, many TK35s were sold with the fixed gate because the low light level did not encourage anamorphic wide screen projection. [ 08-21-2006, 11:26 AM: Message edited by: Christian Appelt ]  |  IP: Logged Clive Carmock Film Handler Posts: 24 From: Morden, Surrey, UK Registered: Dec 2004 posted 08-23-2006 03:54 PM                     The TK35 I have has the removable aperture plate. I have the 1.33:1 plate at the moment and really would like to get the widescreen plate if one should be available. Regards Clive  |  IP: Logged

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