8mm Forum: For all super 8 collectors

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Posted by Chip Gelmini (Member # 44) on September 25, 2004, 09:30 PM:

Comments appreciated.......

http://www.vsp.cape.com/~prfcg/Tower.html

bdbdbd that's all folks :-)

Chip G

Posted by Steven Sigel (Member # 21) on September 25, 2004, 09:50 PM:

One thing you should watch out for with a set up like that is scratching.

Those rollers you are using are designed for 35mm -- the idea is that only the edges of the film come in contact with the roller (thus the beveled edges) - but when you use them for super 8, the whole frame is in contact with the roller, so any imperfections or dirt can cause scratching...

Posted by Chip Gelmini (Member # 44) on September 25, 2004, 10:22 PM:

Hello Steve

You make a good point but in my testing I have been watching that very carefully. There appears to be no problem. I have been using the same test reel many times watching for new scratches and finding none.

CG

Posted by Craig Hamilton (Member # 258) on September 26, 2004, 04:24 AM:

Nice rig Chip, but Tina is more pleaseing to the eye.

Craig [Smile]

Posted by Tony Milman (Member # 7) on September 26, 2004, 04:31 AM:

Chip,

Such large reels!

Posted by Chip Gelmini (Member # 44) on September 26, 2004, 10:12 AM:

In the Tower photo, those are 1200 foot reels as shown. It was designed with 35mm reels for 2000' capacity, because that's all I had at the time, and the diameter of the flange would be the same as that of a 2000 foot super 8 reel with the same hub size. Although they have not been tested, I don't think the Tower would suffice to smaller hub style large capacity reels. With a smaller hub, the motor would have to turn faster, and the risk of wow/futter/bounce would be greater. "Bounce" is related to (on the ST1200) the film in the troth right below the frame counter. As the reels flanges make contact with the film edges, the tight/loose consistent throbbing (casued by gravity during the rotation of the reel - in 1/2 of the rotation it pulls down slowing the reel down and the film is loose, on the other half it pulls down and the film is tight) which I call "the bounce." I've had ALOT of trouble with this using most of the ST1200's, even after take up clutch and fresh belt adjustments. I believed that if I could use 35mm parts made for the industry on the smaller guage films, I would have better luck. In the testing of the Tower, things are looking very good. When I eventually move to another location in the next few years, I'll build a bigger booth and have the room to use the Towers.

Chip G

Posted by Craig Hamilton (Member # 258) on September 26, 2004, 10:54 AM:

Chip, if you install a spring loaded jockey wheel before the take up reel, this should eliminate the Bounce effect.

Craig [Smile]

Posted by Barry Johnson (Member # 84) on September 26, 2004, 01:10 PM:

Hells teeth Chip,projection booths are hot enough as they are without adding to the heat!! What a lovely lady,long may she grace your workplace. [Eek!]

Posted by Richard Clark (Member # 63) on October 01, 2004, 03:27 PM:

Hi Chip,
I love the tower that you have made it looks great I have one question that you may be able to answer.I have been trying to make a long play unit for my 600ft Elmo projector but I dont know what sort of system to use for the takeup reel.
I have seen long play units on the internet but never up close, they seem to only have 1 motor and no belts and I cant see how they do it?
Anyone got any ideas about driving the takeup reel ie motors/clutches etc? or if anyone has a long play unit they could look at for me.
Best Regards to you all and keep up the good work...
Richard

Posted by Chip Gelmini (Member # 44) on October 01, 2004, 11:40 PM:

You should check with Derann. Ask if they have any Spondon Spoolers in stock. That would work well with your Elmo machine and is easy to setup. As for building one, that takes time and getting the parts is even harder and more expensive. The driveins around here are mostly gone and the parts used up. I was lucky enough to get what I did find and it was 20 years ago. As I wrote, was thinking at the time to have 2000' with 35mm in the basement but instead stuck with the super 8.

Chip G

Posted by Brad Miller (Member # 2) on October 02, 2004, 01:41 PM:

The green 35mm rollers from Christie will not scratch 8mm or 16mm film. I've used them countless times. In fact, a Christie 35/70 platter will run 16mm on it's own. There are pictures of this at www.film-tech.com under pictures see "16mm on a platter".

Posted by Jim Bishop (Member # 81) on October 07, 2004, 09:53 AM:

Holy Cow.

Screaming for double-up use as a rabbit hutch with auxilliary hamster wheels.

Good job.

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