my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Xenex II making my gates hot !!! (Page 2)

This topic comprises 2 pages: 1  2

Author Topic: Xenex II making my gates hot !!! Wes Hughes Expert Film Handler Posts: 175 From: Raleigh, NC, USA Registered: Aug 2001 posted 08-29-2001 04:22 PM                     the bulkhead alignment had definitely been altered... is there anything that I could possibly do about that now (short of returning them to Kneisely). I just figured that if the bulkhead had been moved, then any ill effect from that could be compensated for by adjusting the 4 height adjustments on the (Century) bases to level the optical axis back up with the aperture.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 08-29-2001 06:44 PM                     The problem will then exist that the lamp is not sitting on the same axial plane as the centre of the optics of the reflector You basically need a laser now to line up the two parts of the optical system  |  IP: Logged Freddie Dobbs Expert Film Handler Posts: 115 From: Pinson, AL, USA Registered: Jun 2001 posted 09-02-2001 06:42 PM                     Wes, The compensation would not work because the front support is fixed causing the lamp to be off axis. If I were in you position I would square the reflector to the front of the lamphouse, then center all three adjustment and use a laser, that should get you in the ballbark.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 09-02-2001 09:33 PM                     Okay here is the only way to do it Put the Alignotron in the lens mount Put a a alignement ring that strong provides for the yoke of there lamphouses on the yoke and put the plug in the back of the mirror and tape a flat mirror across the back of it No move the lamphouse and the yoke so the laser shoots through the hole in the ring sitting in the yoke and to the vortex of the miorro and back to the laser in a straigt line. This isn't easy and take patience and lots of time but that is the first requirement of a good engineer  |  IP: Logged John T. Mellor Film Handler Posts: 52 From: Htafield, Pennsylvania, USA Registered: May 2000 posted 09-17-2001 07:35 PM                     the working distance for a series II Knisley is 28" from the center of the reflector to the aperature plate . From what you said in the earlier post you are to far back causing the spot to be to large and heating the heatshilds and projector some of the Knisleys had a 26 &1/2 " working distance try the 28' first I think it will solve your problem John  |  IP: Logged

All times are Central (GMT -6:00)

This topic comprises 2 pages: 1  2

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.