8mm Forum: Calling Mr. Elmo for new type of Jitter

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Topic: Calling Mr. Elmo for new type of Jitter

Dino Everette
Phenomenal Film Handler

Posts: 1535
From: Long Beach, CA USA
Registered: Dec 2008

posted September 20, 2009 12:18 AM

OK this one has me puzzled...I just got 2 shorts from Buckingham and went to play them and they both did this weird side to side jitter in my ST-1200HD. I have not seen this happen before and before I try out any of my films that I know run fine I want to see if this is something that might call for a fix. I did a quick run through on the rewinds and didn't see anything with the shorts that looked out of the ordinary. any ideas?

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"You're too Far Out Miss Lawrence"

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John Hermes
Expert Film Handler

Posts: 139
From: La Mesa, CA, USA
Registered: Nov 2008

posted September 20, 2009 12:49 AM

Try lubing the prints. I transfer films and have this problem on rare occasions. A slight coat of Filmguard always makes them run well.

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John Hermes

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Mike Tynus
Expert Film Handler

Posts: 135
From: Addison, IL, USA
Registered: Apr 2008

posted September 20, 2009 02:12 AM

My ST-1200HD does that on films without a balance stripe on them. It's finicky that way.

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Maurizio Di Cintio
Jedi Master Film Handler

Posts: 977
From: Ortona, Italy
Registered: Jan 2004

posted September 20, 2009 04:05 AM

Something of this sort happened on one of my GS 1200: I had just finished splicing and cleaning the film with a sort of much refined gasoline (it just removes greasy pencil marks and dust, specs ect - does not lube): when I projected it, it showed a very little sign of horizontal jitter, so little it didn't even seem jitter, but a slight lack of focus. I haven't lubed it yet because I have to stripe it, but I hope that after that it well go through perfectly, like it did before cleaning.

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Maurizio

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted September 20, 2009 05:43 AM

Side to side jitter can be caused by dry or green film. Normally a lube of the film with something such as FilmGuard will sort the problem once and for all.

Give that a try first. If the ST is ok with other films I would blame the film and not the machine. The reason this can happen as well is if the film slitting is slightly under or over width. The claw can then rub on the edge of the sprocket hole as it enters. Using lube on the film lets the claw glide smoothly in and out of the sprocket hole.

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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Dino Everette
Phenomenal Film Handler

Posts: 1535
From: Long Beach, CA USA
Registered: Dec 2008

posted September 21, 2009 01:35 AM

green film + green user = embarassed dino

I film guarded the prints and had a gorgeous viewing of the 2 new shorts. Its funny that over the years I have never seen this before, but had green prints which usually seemed sticky/staticky coming off the reel which would alert me to lube em first.

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"You're too Far Out Miss Lawrence"

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