Author
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Topic: Film start trips fail-safe
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Monte L Fullmer
Film God
![](http://www.film-tech.com/ubbmembers/2797c.jpg)
Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004
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posted 07-21-2007 08:45 PM
Sounds like it - the tension needs to be adjusted tighter somewhat on that takeup shaft. Dhes the reel 'bounce' around when it begins to spin?
Also, if you can disassemble that clutch assembly, see if the cloth friction pad had enough oil on it, otherwise a dry pad could cause the irratic takeup when the reel begins to turn.
Are your running 6k reels? If so, the tension really has to be up there, but not so tight that the film is 'singing' across the last holdback sprocket even when the takeup reel is full.
And if it's 'singing', even with low tension, I bet that the sprocket either needs to be turned around, or replaced due to the film creating small cavities at the base of each tooth on that sprocket and this condition is called "a hooking sprocket".
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