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Topic: HELP WITH Eumig Soundomatic
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Martin Jones
Phenomenal Film Handler
Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008
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posted January 25, 2012 08:27 AM
NO, Lee.. This machine has only 1 pin as STANDARD. There has been much discussion on this point in regard to these Eumig Machines.
The facts are .... if a machine is single gauge ONLY, it will have two claws (pins) engaging adjacent sprocket holes. If a machine is Dual Gauge it will have only ONE claw. The reason that very thin PINS are used rather than more substantial CLAWS is that both the horizontal and vertical limits of the sprocket holes vary between the two gauges, so the pin is small enough and thin enough to enter the holes of both gauges, without having to be differently positioned.
The pin stroke is the same for both, that of Super 8 frame pitch. On regular 8, the pin enters just under the TOP of the sprocket hole, so for part of the stroke it does not move the film. Both sprocket hole lower edges locate at the same position at the end of the stroke; the gate aperture plates define where the aperture is relative to the end of the stroke, defining the frame line (which is different for the two gauges). That is the ONLY reason for having two sets of plates; the plates have NO effect on the claw (pin) FUNCTIONING whatsoever. If you use the wrong aperture plate, you simply get an incorrectly framed (and sized) picture. It does not affect the actual TRANSPORT of the film AT ALL.
Martin
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Retired TV Service Engineer
Ongoing interest in Telecine....
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Michael Yoh
Junior
Posts: 4
From: Chambersburg PA
Registered: Jan 2012
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posted January 25, 2012 11:25 AM
Thanks guys for all your input.
Am I hearing that you both are in consensus now that there is a claw pin missing from the arm. There is a bottom pin, but a hole above it (above the white arrow) where the other pin should be? If this is the case, what can be done about it. Can I buy a pin, an arm, or whatever I need? IS there a supplier you would suggest.
It is the right plate. She did not remove the film plate, but had some film jammed in the projector which she assured me she remover by reversing the projector. However, the pin could have bee loosened at some point in time when the plate may have been removed improperly. Never knew about the rear know and the indexing dots.
She loves this projector. I'd rather get it working than buy another one, perhaps a Yelco, which seems to get high marks for film transfer.
Thanks,
Mike
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Martin Jones
Phenomenal Film Handler
Posts: 1269
From: Thetford , Norfolk,England
Registered: May 2008
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posted January 25, 2012 01:15 PM
NO , Michael. THE HOLE ABOVE THE WHITE ARROW IS NORMAL!!! There should NOT be anything in it!
What Lee and I are referring to is the place where the white arrow is pointing. In the picture the white arrow points to a piece of BRASS in the lower hole. Usually, there is a STEEL PIN sticking out from the centre of the brass towards the film rather like the pin of a thumb-tack, where the brass bit is the head. In your picture it is NOT there; it is missing, it has broken off.
As a result, the film will not stop in the gate, but will simply be pulled through CONTINUOUSLY by the bottom (sound )Sprocket. DO not attempt to use the machine; it will very likely damage the film.
I am not aware of anyone offering replacements for these pins; basically it's a write off as a machine, but other spare parts are sought after by enthusiasts, especially if the machine is a Sonomatic 824 HQS, which it appears to be.
Martin
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Retired TV Service Engineer
Ongoing interest in Telecine....
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