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Topic: Upper Feed Sproket Running Fast on Victoria 5
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Daryl C. W. O'Shea
Film God
![](http://www.film-tech.com/ubbmembers/1303c.jpg)
Posts: 3977
From: Midland Ontario Canada (where Panavision & IMAX lenses come from)
Registered: Jun 2002
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posted 08-06-2002 07:44 PM
Hi,Would anyone know what would cause the upper feed sprocket on a Cinemeccanica Victoria 5 to run faster than the intermittent and the lower holdback sprocket, causing the loop before the gate to become larger and larger (sometimes an extra frame a second)? Belts seemed to be alright, a little worn though. Replaced them and still have the same problem. Readjusted tension, no difference. This happens immediately on startup and at full motor speed. Old style gate. Projector is fitted with a Cat 701 reader. Strong A3 Platter. Thanks,
Daryl
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Rick Long
Jedi Master Film Handler
Posts: 759
From: Toronto, Ontario, Canada
Registered: Nov 1999
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posted 08-06-2002 09:12 PM
This is weird!As you know, the upper feed sprocket shaft is driven directly from the motor belt, therefore we have to assume it is running at the correct speed. Is it therefore, possible that the rest of the projector is running at slightly slower speed? Have you checked the inner belt idler (upper left corner) for correct tension? Didn't lose any shaft keys while changing belts didya?
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