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Topic: New-to-me Elmo ST-1200HD needs 1200' takeup reel and fix for rubber parts gone to goo
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Steve Klare
Film Guy
Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003
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posted July 16, 2018 03:40 PM
Any of these useful posts should be here:
Index of Technical Topics
-as a matter of fact, the ones that aren't should be too!
(If anybody finds some out in the wild, please tell Doug. We can't have found all 15 years of them on the first try.)
Mine has been running with the restored shutter wheel surface about three years now. I recently found out what happens when the cement fails. It can't fail everywhere at once, so the rubber tire falls off the wheel at that one spot but hangs by two neighboring ones that are still OK.
It was a little like getting a flat tire: the machine started to make some odd sounds and run roughly. I pulled over to the side, found a couple of places that were a little loose, applied new cement, then gave the machine a couple of days vacation to make sure it set up OK and it's doing fine.
When I first installed it, I used to check the bond every time I ran. After a while I slacked off to "never". I think I'll go back to "here and there".
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All I ask is a wide screen and a projector to light her by...
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Mike Brantley
Junior
Posts: 23
From: Mobile, AL, USA
Registered: Jan 2018
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posted March 31, 2019 08:14 PM
OK, progress report. I'm still not out of the woods yet, but there has been progress.
A buddy gave me an ST-1200D that has almost inadubile sound output. Replacement amp (black Sanyo-made part) has been obtained via eBay, but I will need to wait for some help desoldering and soldering to swap that part in to test. I *suck* (badly) at solder work. But I bring this up because otherwise this 1200D runs smoothly and its operating noise is very quiet. Really, it purrs.
Now, back to the ST-1200HD I've been working on. Goo removed, new belts in place, and the new shutter wheel "tire" rubber has been glued into place. Good to go?
Well, almost. It projects a nice image, and the sound is nice and booming. However, the machine is very noisy to operate. It's noisier going forward than in reverse, but quite noisy in both directions. Not the sweet quiet from the other machine, that is for sure.
So, think I need to lubricate something, somewhere? What should be lubricated in these beasts, and what type of lubricant should be used? Or, could it be something else? I don't *think* it's my application of the shutter wheel rubber. But not sure. I more suspect it's all the other gizmos making noise. But, again, not sure.
P.S. I ordered a couple of 1600-foot reels from Steve Osborne, but I also still plan to track down a metal Elmo 1200-foot takeup reel.
EDIT: A follow-up clue.... I just switched the HD projector to 18fps and running noise is normal. Stopped it, switched back to 24fps, and now it is still very noisy running forward, but sounds quieter in reverse.
LAST EDIT FOR TONIGHT. PROMISE. OK, I figured out how to quieten the 1200HD in 24ps mode. I noticed the top rubber wheel that turns the mechanism at 24fps was not exactly aligned with the shutter wheel. It was a bit toward the front of the projector rather than straight over the shutter wheel. So I applied a bit of pressure and "adjusted" (probably bent, heh) the whole works back a bit. Now it's quiet. Whew!
[ March 31, 2019, 11:22 PM: Message edited by: Mike Brantley ]
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Guess I will be getting an area rug, too, to hide that.
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