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Topic: Use of Metal Reels...Too Much Weight?
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Paul Adsett
Film God
Posts: 5003
From: USA
Registered: Jun 2003
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posted October 30, 2007 02:27 PM
Hi Claus, I think you may have a valid concern here. The Goldberg reels are made of steel, whereas the Elmo reels are made of Aluminum alloy. This means that the Goldberg reels are about 3X the weight and rotational inertia of the Elmo metal reels, and about 6X the weight and rotational inertia of plastic reels of the same size! I would stay with Elmo reels if you can, they are the best 1200ft metal reels you can buy. I have some Goldberg steel reels, and I do not like them for the reasons that you have cited.
-------------------- The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection, Elmo GS1200 f1.0 2-blade Eumig S938 Stereo f1.0 Ektar Panasonic PT-AE4000U digital pj
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Chip Gelmini
Phenomenal Film Handler
Posts: 1733
From: Brooksville, FL
Registered: Jun 2003
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posted October 31, 2007 10:21 AM
If you build a spooling system as I have, any reel works just fine no matter the size or weight. Because the spooling system is made from 35mm projector parts, that are capable of spooling over 55 pounds of physical weight (for example a 6000' 35mm reel that has 3 x 2000' made up - similiar to one of our super 8 1200 footers that has 3 x 400) at the rate of 90 feet per minute. By means of a dc variable speed motor and related speed control switch, this unit can be set to 12 to 19 percent speed that equals the flow of super 8. My unit presently runs 1600 foot Goldberg reels and I have no trouble using them at all.
It is also important to remember how full are your reels? Simply look at the gauges on the flanges. Note that on a Goldberg reel, the "1200'" capacity mark is approx 1/2 inch from the outside edge. So if your reel is full to the brim, then it is overloaded. Logic says this guide is put there to help with slightly loose take up when it happens above 1,000 feet as suggested above.
Finally, what is the condition of your print as well as the belts. If the sprockets have been pinched then the print will never wind tight during take up mode on any reel or any machine due to the film damage. Once this happens, the only way to correct this is to replace the print.
I know not everybody can't build the Towers for changeover like I have. But I found this post interesting and wanted to comment.
If your prints and belts are good, your Goldberg reels should be OK on the projectors. Just don't overload them and be on guard while running them just in the event a problem begins.
While I agree the Elmo reels seemn to be the best made for the projectors, I must admit I don't care for them that much. I much prefer a reel like the Goldbergs that have the four large holes inside the hub. How cool is that to have these available for your fingers when working with the reel? From pulling out of a can or sliding on to the shafts! What a grip! You can't do that with the Elmo reel.
Thanks for reading!
cg
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