8mm Forum: framing knob

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Topic: framing knob

Jim Ranniger
Junior
Posts: 4
From: Littleton, CO, USA
Registered: Jul 2014

posted July 19, 2014 09:51 AM

The framing knob on my projector is inoperative. Something has apparently become disconnected inside but I can't seem to spot it. How do I fix it?

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Dominique De Bast
Film God

Posts: 4486
From: Brussels, Belgium
Registered: Jun 2013

posted July 19, 2014 10:16 AM

Hello Jim. Welcome to this forum. I would suggest you to give some more informations such as the make and the model of your projector.

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Dominique

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Jim Ranniger
Junior
Posts: 4
From: Littleton, CO, USA
Registered: Jul 2014

posted July 19, 2014 07:39 PM

What an omission! I must have been asleep at the swtich. The projector is a Bolex 18-5L Super.

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Josef Grassmann
Expert Film Handler

Posts: 190
From: Hennef-Sieg, Germany
Registered: Apr 2005

posted July 22, 2014 03:36 AM

Hello Jim,
if I remember right, there excist 2 modification.
a) has framing knob at bottom on right hand side (towards screen)
b) frame adjustment is done by turning of knurled cylinder (nut)at hinge of lens holder.
Most customer have problem to recognise framer at type b)
Maybe your problem is solved now, too.
regards
Josef

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Jim Ranniger
Junior
Posts: 4
From: Littleton, CO, USA
Registered: Jul 2014

posted July 22, 2014 12:12 PM

Example a) describes the framing arrangement on my projector. The knob is near the bottom of the front (screen end) of projector. Further investigation shows the shaft entering the projector from the knob has a cam at the end of the shaft, the cam adjusts the aperature plate up and down. This cam has come loose from the shaft and just spins on the shaft when the knob is turned. I do have an earlier model of this projector with the same framing mechanism. Maybe the solution is to take the good part from the old projector and put it on the newer machine if I can get it out. Does anybody have a better idea? Perhaps a way to get the cam attached to the shaft?

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Jim Ranniger
Junior
Posts: 4
From: Littleton, CO, USA
Registered: Jul 2014

posted July 30, 2014 09:26 AM

Thanks to those who considered my issue. I have resolved the problem by canabalizing an older projector for the needed part and installing the part in the newer projector.

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