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Inside the Super8 Cartridge


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#1 Terry Mester

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Posted 17 July 2008 - 08:20 PM

Inside the Super8 Cartridge
The Secret is revealed!

Here are pictures of what the Super8 Cartridge looks like inside. The inside part of the Cartridge simply slips into grooves on the outer Case. It would then be melted together. There are the Supply Chamber in the front half, and the Take-up Chamber in the back portion containing the Spool and Clutch. The Film in the Supply Chamber is not connected to anything. It is just coiled-up, and rotates as it unwinds. It is sitting against a Plastic Disc behind it which helps it unwind. As you can see it is a very tight path for the Film to travel -- especially after the Film Gate. For the Sprocket Arm on the Camera to pull the Film down is not the difficult part. The real challenge is to push the Film down through the two bottom corners into the Take-up Chamber. It's asking a lot to ask this Cartridge to function well at 24 Frames per Second. In the Take-up Chamber, whenever it runs out of slack Film, there is only one post to inhibit the Spool from tugging on the Film coming down. If the Clutch on the Camera is too tight, the Film will be tugged in the Film Gate. The Pressure Plate cannot prevent this. With everything being as it should, this Cartridge does work superbly at 18 Frames per Second.

The Supply Chamber
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For another View (CLICK)

The Film goes around this Roller Pin at the top left corner to travel along the top track.
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The Film laterally shifts from the front half to the back half of the Cartridge as it exits down the right corner. You can rotate the picture 90 Degrees clockwise for upright image.
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Plastic Tray
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Empty View
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The Edge
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This is the bottom edge after the Film has passed the Pressure Plate.
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#2 Terry Mester

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Posted 17 July 2008 - 08:24 PM

The Case
This is the moderately curved bottom corner of the Case to guide the Film through the bottom Track.
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Inside View of the Case
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The Pressure Plate
Front View
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Back View
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Side View
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The Take-up Chamber
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The Spool turns clockwise. The Post in the right corner inhibits tugging on the Film.
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#3 Terry Mester

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Posted 17 July 2008 - 10:19 PM

The 14 Pictures for this Thread are being uploaded from the Yahoo Geocities Website which unfortunately limits hourly Data Transfer to 4 MegaBytes. Unfortunately Cinematography.com does not store Pictures on their Website. I would urge you to not unnecessarily view Page 1 of this Thread if there are no new Posts. If you are able to successfully download all 14 Pictures into your Web Browser, I would recommend that you SAVE this Webpage to your Computer's Hard Drive for your personal reference. This will eliminate any need for you to view this Page 1 unnecessarily.
Also, do not QUOTE the above Post when adding any REPLY, or the Pictures will be added to your REPLY.
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#4 Sander Ferdinand

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Posted 18 July 2008 - 07:56 AM

Try hosting your pictures at sites like http://my.imageshack.us/ or http://www.imageox.com/ .

They are free to use, without sign-up.

Edited by Sander Ferdinand, 18 July 2008 - 07:57 AM.

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#5 Michael Lehnert

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Posted 18 July 2008 - 12:40 PM

Excellent stuff, cf my other post in your other thread.

As a sustaining member, you have 15MB of attachments available to you. That´s what ciny.com offers for posting/hosting pictures here. Maybe this would be something for you?

BTW, ever thought about contacting Chris from Super 8 Today for publishing this with nice pics and all? Just a thought...
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#6 Jurgen Lossau

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Posted 18 July 2008 - 03:50 PM

Hi Michael,

I already contacted Terry to publish his story in smallformat. It will be published in issue 4*2008.
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#7 Michael Lehnert

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Posted 18 July 2008 - 05:57 PM

Excellent news! Looking forward to reading it! :)
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#8 Terry Mester

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Posted 19 July 2008 - 01:30 AM

Try hosting your pictures at sites like http://my.imageshack.us/ or http://www.imageox.com/ .

They are free to use, without sign-up.

Thanks Sander. I'll check those Websites out.


Is it possible for David or a Moderator for this Forum to truncate this Page 1 after POST #3 so that POST #4 and the rest will be bumped to Page 2? This will enable users to comment without having to re-load the 14 Pictures on Page 1.
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#9 Michael Lehnert

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Posted 19 July 2008 - 12:58 PM

Is it possible for David or a Moderator for this Forum to truncate this Page 1 after POST #3 so that POST #4 and the rest will be bumped to Page 2? This will enable users to comment without having to re-load the 14 Pictures on Page 1.


I can see your point. Let me try.

-Michael
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#10 Terry Mester

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Posted 22 July 2008 - 02:36 AM

Until you're able to successfully download all 14 Pictures in my original Post, here are new Links to view them individually.
s8_cart_supply_chamber.jpg ........... s8_cart_case_inside_bottom.jpg
s8_cart_supply_chamber.2.jpg ........... s8_cart_case_inside.jpg
s8_cart_supply_chamber_top_lt.jpg ...... s8_cart_press_plate_front.jpg
s8_cart_supply_chamber_top_rt.jpg ...... s8_cart_press_plate_back.jpg
s8_cart_supply_chamber_tray.jpg ...... s8_cart_press_plate_side.jpg
s8_cart_supply_chamber_empty.jpg ...... s8_cart_takeup_chamber.jpg
s8_cart_edge.jpg ......................... s8_cart_takeup_chamber_bottom.jpg
s8_cart_edge_bottom.jpg
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