8mm Forum: Chinon 7000 New Problem

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Topic: Chinon 7000 New Problem

Grant Fitzgerald
Expert Film Handler

Posts: 161
From: Owatonna, MN
Registered: Oct 2011

posted November 26, 2011 05:11 PM

After getting advice on the claw penetration and doing what was suggested I was landed with this new problem.

This is what is happening.

http://www.youtube.com/watch?v=4HjLJdk5qhA&list=HL1322348584&feature=mh_lolz

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Dino Everette
Phenomenal Film Handler

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

posted November 26, 2011 07:26 PM

It looked like the bunching up did not start until you flipped it over from thread to run.......Is it possible that the adjustment you made earlier needs to be readjusted? Perhaps you moved it too far forward, and you just need to pull it back a tad?

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"You're too Far Out Miss Lawrence"

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Grant Fitzgerald
Expert Film Handler

Posts: 161
From: Owatonna, MN
Registered: Oct 2011

posted November 26, 2011 07:54 PM

I have tried many adjustments both forward and back, they all do this. And yes it only bunches when I put it on forward.

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frank arnstein
Jedi Master Film Handler

Posts: 534
From: Gold Coast. Australia
Registered: Jan 2005

posted November 26, 2011 10:22 PM

Check that the flywheel capstan is spinning Ok before switching to project. Seems like the film could be getting caught at the pinch roller and jamming somewhere there or in the sound head itself.

dogtor frankarnstein [Cool]

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At Projector Heaven the Focus is always on Detail.

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[o:/o]<|=- dogtor@projectorheaven.com.au
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Grant Fitzgerald
Expert Film Handler

Posts: 161
From: Owatonna, MN
Registered: Oct 2011

posted November 26, 2011 11:55 PM

What is the pinch roller and the flywheel capstan?

Yes I see that the sound roller is not spinning? Is there a way to fix this? Or what is causing the problem?

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frank arnstein
Jedi Master Film Handler

Posts: 534
From: Gold Coast. Australia
Registered: Jan 2005

posted November 27, 2011 01:19 AM

Take the back off and see why the flywheel doesn't turn. [Razz]

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At Projector Heaven the Focus is always on Detail.

____
[o:/o]<|=- dogtor@projectorheaven.com.au
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Grant Fitzgerald
Expert Film Handler

Posts: 161
From: Owatonna, MN
Registered: Oct 2011

posted November 27, 2011 07:27 AM

I did and I wasn't able to tell what it wasn't spinning. Any ideas?

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Jean-Marc Toussaint
Film God

Posts: 2392
From: France
Registered: Oct 2004

posted November 27, 2011 08:15 AM

I'm no expert regarding Chinon projectors but do they require a special cut at leader's head prior to threading?
It also looks like the film is using a Kodak white leader. There were a few stocks of these that were slightly thicker than usual and had difficulties passing through some ofthe mechanical elements (I've experienced this with an otherwise finely tuned Elmo St1200).
Did you try another piece of leader? Acetate or polyester, one that would be directly from a lab and not added later such as the one in your video?
The flywheel is a large metal disc/cylinder (roughly 4 to 5 inches in diameter) that is connected to the sound drum. The centrifugal force it creates when spinning is essential in keeping the film against the sound head.

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The Grindcave Cinema Website

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Grant Fitzgerald
Expert Film Handler

Posts: 161
From: Owatonna, MN
Registered: Oct 2011

posted November 27, 2011 07:53 PM

It is the only kind of leader I have. Also the drum isn't spinning at all.

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Brad Kimball
Phenomenal Film Handler

Posts: 1171
From: Highland Mills, NY USA
Registered: Jun 2003

posted November 27, 2011 10:09 PM

Owning 3 Chinon units myself, I can vouch for the leader issue. Any film I received that came with white or green plastic leader were always a loss-of-loop issue for me and I was forced to replace them all with real film leader. In short, I would trim off pieces of old films I no longer cared for (various silent shorts starring unknowns from the days of silent movies) and splice them at the beginning of precious commodities as leader and I have had great success with this method (ie: no loss-of-loop issues or loud chattering through the projectors).

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Grant Fitzgerald
Expert Film Handler

Posts: 161
From: Owatonna, MN
Registered: Oct 2011

posted November 27, 2011 10:56 PM

So the whole problem is just caused by the leader? Is there any way to get leader that will work? Also I used that leader on my Three Little Pigs film and it worked perfectly half a dozen times.

Also is the flywheel supposed to turn when I put turn the projector to thread, or is it supposed to turned once films goes through it?

Guys I feel like giving up on this projector nothing is working. Is there anyone I could send it to who can fix it for me?

Even without using that leader it still isn't working for me and it now just bunching up at the beginning of the threading process.

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Bill Brandenstein
Phenomenal Film Handler

Posts: 1632
From: California
Registered: Aug 2007

posted November 28, 2011 12:35 AM

Grant, you might look for unprocessed, outdated Super 8 film on eBay. Unless you end up with a stock with remjet directly on the back of the film, it won't shed, color film is completely opaque, and it's not thicker than normal film because it IS normal film.

Just yank it out of the cartridge and reel it up.

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