8mm Forum: Bell & Howell 10MS repair

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Topic: Bell & Howell 10MS repair

Michael Nolting
Junior
Posts: 2
From: Union City
Registered: Feb 2012

posted February 27, 2012 02:21 PM

I have a Bell & Howell 8 MM model 10MS projector.
The "Framing" adjustment does not stop the "Jumping" picture.
I noticed on other projectors I have that they all have a lever just behind the film where the light shows through that goes up and down with a small rod that seems to actuate the film , I guess to momentarily stop the film so that there is no jitter. (thats why there is a big loop over and below the lens).
However, on my 10MS, I see a short pin, about 1/8" long. It makes no contact with the film at all.
Is there a missing part? or did something break?
Any help would be appreciated.
Mike

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted February 28, 2012 12:18 PM

The framer adjustment will not do anything to prevent jitters in the film. It only controls a mask that positions over the film so you only see one frame at a time. The other mechanism that pulls the film through the gate is called the claw. If this is not adjusted properly then it may not be making contact with the sprocket in the film, which probably would cause the film to stop feeding. If the film is feeding, but just jittering the problem more likely is in the lower looping area. This is just a guess...more detailed information would help focus in on the problem area.

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Michael Nolting
Junior
Posts: 2
From: Union City
Registered: Feb 2012

posted March 21, 2012 11:30 PM

I guess the word "Framing Adjustment" is wrong. The condition I encounter is what the knob that you turn to get the picture from "Jumping" up and down. This control used to work but does nothing now.
That particular knob only moves a small rod positioned below the window where the light from the bulb passes through and shines on the film. The rod however, does not appear to do anything, it makes no contact with anything. During motor operation, it rapidly moves up and down (in my case nothing else).
The only way for film to work is to have the film momentarily stopped for each frame. And I know that the stopped condition has to exist when the disk that spins in front of the film rotates to a position that allows light to pass through. The closest thing to performing this function is that rod that makes no mechanical contact with the film what so ever.
I just need to know if a part is missing or is something just bent.

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