Film-Tech Cinema Systems
Film-Tech Forum ARCHIVE


  
my profile | my password | search | faq & rules | forum home
  next oldest topic   next newest topic
» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Intramittent Movement

   
Author Topic: Intramittent Movement
Demetris Thoupis
Phenomenal Film Handler

Posts: 1240
From: Aradippou, Larnaca, Cyprus
Registered: Apr 2001


 - posted 04-15-2001 05:02 PM      Profile for Demetris Thoupis   Email Demetris Thoupis   Send New Private Message       Edit/Delete Post 
Hello All again,
Happy Easter - first of all. Anyway. I was really wondering about the maltese cross movement of the various projectors that are in the market. Currently most projectors have a clockwise movement of the maltese cross of the projector. BUT on the Cinemeccanica projectors the cross is moving anticlockwise. Can someone explain why and are there any other brands with an anticlockwise movement of their intrammitent?
Thanks
Demetris Thoupis

"FOR STRENGTH AND HONOUR"

 |  IP: Logged

Aaron Sisemore
Flaming Ribs beat Reeses Peanut Butter Cups any day!

Posts: 3061
From: Rockwall TX USA
Registered: Sep 1999


 - posted 04-15-2001 05:56 PM      Profile for Aaron Sisemore   Email Aaron Sisemore   Send New Private Message       Edit/Delete Post 
I think it has something to do with the position of the intermittent in relation to the trap. IIRC, Norelco AAII (DP70) also has an intermittent sprocket that rotates counterclockwise, as the sprocket is to the right of the intermittent shoe, as opposed to most other projectors that have the intermittent shoe to the right of the sprocket. Then theres the models of projectors that can go in BOTH directions! Confused yet?

Aaron

 |  IP: Logged

Robert Throop
Master Film Handler

Posts: 412
From: Vernon, NY USA
Registered: Jun 99


 - posted 04-16-2001 10:23 AM      Profile for Robert Throop   Email Robert Throop   Send New Private Message       Edit/Delete Post 
Motiograph models H&K also had counter clockwise rotation of the intermittent sprocket.

------------------
Bob Throop

 |  IP: Logged

Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 04-16-2001 10:30 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
The Superior projectors and the dp75 also turned anti clockwise

 |  IP: Logged

Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 04-16-2001 10:51 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
The rotational direction and placement of a movement was usually a trade off of the fundamental design of the projector itself. Rotational direction or placement of the movement in front or behind the shoe has nothing to do with image quality or stability.
The one thing about movements though is that they have to have the oil spiral on the shafts or bushings done in such a way that they effectively pump oil along the length of the shaft. Without this being done properly, the movememt may seize up . In movements that rotate in both directions, such as in high speed interlock machines, they usually employ oilite bushings.
Mark @ GTS


 |  IP: Logged



All times are Central (GMT -6:00)  
   Close Topic    Move Topic    Delete Topic    next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:



Powered by Infopop Corporation
UBB.classicTM 6.3.1.2

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.

© 1999-2020 Film-Tech Cinema Systems, LLC. All rights reserved.