8mm Forum: GS1200 Motor (Electrical Noise)

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Topic: GS1200 Motor (Electrical Noise)

Paul Adsett
Film God

Posts: 5003
From: USA
Registered: Jun 2003

posted September 26, 2017 04:32 PM

Strange beasts these GS100'S, they need constant TLC to maintain their spectacular performance capability. Eumig's just mind their own business and keep chugging along! [Smile]

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The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012

posted September 26, 2017 04:33 PM

High maintenance Paul, just like many women! Ouch ha ha. [Big Grin]

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"C'mon Baggy..Get with the beat"

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Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006

posted September 26, 2017 07:31 PM

Paul

That internal arc you mention will be down to the gummy commutator in contact with the brushes. Cleaning/scraping carefully out the build up between each segment on that commutator is very important for that motor to run properly. If you remove the two screws on the back of the motor, you can remove the rear cover with its brushes to gain access to those two brushes and most importantly the commutator itself. To put back together, use a couple of cotton buds with the ends cut off to gently compress both brushes as you slide the rear cover back on.

The motor does not need to be removed and the job can be done in a hour or so. The last time I did this was to both motors in place and never had any more problems since.

The diameter of the commutator is incredibly small and wears out badly due to the small dia of it...its real dinky toy stuff. Hopefully you still have life in the commutator and a good clean/ polish up with fine 600 wet and dry plus the doing the segments will give you a few more years out of the motor....its well worth doing. [Smile]

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Paul Adsett
Film God

Posts: 5003
From: USA
Registered: Jun 2003

posted September 26, 2017 10:15 PM

Thanks for that tip Graham. I will give it a try.

--------------------
The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj

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