This is topic Intramittent Movement in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Demetris Thoupis (Member # 833) on 04-15-2001, 05:02 PM:
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"
Posted by Aaron Sisemore (Member # 145) on 04-15-2001, 05:56 PM:
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
Posted by Robert Throop (Member # 61) on 04-16-2001, 10:23 AM:
Motiograph models H&K also had counter clockwise rotation of the intermittent sprocket.------------------
Bob Throop
Posted by Gordon McLeod (Member # 33) on 04-16-2001, 10:30 AM:
The Superior projectors and the dp75 also turned anti clockwise
Posted by Mark Gulbrandsen (Member # 72) on 04-16-2001, 10:51 AM:
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