8mm Forum: Sankyo Sound 500 problem...Please Help!

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Topic: Sankyo Sound 500 problem...Please Help!

Dan Pinto
Film Handler

Posts: 32
From: Brooklyn
Registered: Jun 2006

posted March 12, 2007 09:15 PM

My take up reel fails at about the 400ft mark on 600 ft reels. I changed the 2 main belts but I still have the same problem. I love this projector and has never failed, what should I do?

Thanks,

Danny

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If you stew cranberries like applesauce, it tastes much more like prunes than rhubarb does!

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Mike Peckham
Phenomenal Film Handler

Posts: 1461
From: West Sussex, UK.
Registered: Jun 2003

posted March 13, 2007 07:05 AM

Dan

The problem is most likely in the clutch mechanism at the base of the take up reel arm. If you take the rear cover off the projector you'll see a collection of white plastic gears that between them transmit the motion from the belt to the take up reel. One of them is a compound assembly which includes two cork washers that rub against each other to form a clutch.

I seem to think that it might be possible on this assembly to tighten a small nut to increase the torque on the discs, that might do the trick. Otherwise it might be necessary to disassemble this mechanism and try cleaning it up; remove any grease and roughen up the friction surfaces on the discs - or replace them altogether.

Good luck [Wink]

Mike

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Auntie Em must have stopped wondering where I am by now...

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Dan Pinto
Film Handler

Posts: 32
From: Brooklyn
Registered: Jun 2006

posted March 15, 2007 02:55 PM

worked like a charm... tnx much!

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If you stew cranberries like applesauce, it tastes much more like prunes than rhubarb does!

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Douglas Meltzer
Moderator

Posts: 4554
From: New York, NY, USA
Registered: Jun 2003

posted March 15, 2007 09:05 PM

Very impressive, Mike!

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I think there's room for just one more film.....

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Joe Taffis
Phenomenal Film Handler

Posts: 1592
From: United States
Registered: Jun 2003

posted March 17, 2007 06:02 PM

sounds similar to the rewind clutch assembly on the Elmo ST800. I tried every which way of adjusting it, taking it apart, tightening, etc. but I guess the cork washers were too far gone. Luckily, Jan Bister came to the rescue with a replacement from his Elmo graveyard, and the machine is in great shape again. [Smile]

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Joe Taffis

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Mike Peckham
Phenomenal Film Handler

Posts: 1461
From: West Sussex, UK.
Registered: Jun 2003

posted March 18, 2007 03:50 AM

Doug

One tries... [Roll Eyes]

Mike

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Auntie Em must have stopped wondering where I am by now...

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted March 18, 2007 05:32 AM

Just one point I would like to add and that is that the cork surfaces shouldn't be dry. Elmo, Eiki and others suggest a smear of silicon grease on the surfaces to enable smooth slippage.

If the cork is dry and roughened then the cork can cause juddering instead of a smooth take up.

If this scenario cant be reached then the clutch material is warn and should be replaced.

Kev.

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GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Mike Peckham
Phenomenal Film Handler

Posts: 1461
From: West Sussex, UK.
Registered: Jun 2003

posted March 18, 2007 05:57 AM

Kev

Good point, I hadn't thought of that.

Mike [Cool]

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Auntie Em must have stopped wondering where I am by now...

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