Author
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Topic: Elmo GS-1200: a mistake???...
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Frank J Manrique
Junior
Posts: 4
From: Redlands, California
Registered: Dec 2007
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posted February 28, 2008 01:47 AM
Last year (in November, I believe)I bought a New Model GS-1200 with longer custom-built reel arms, double-bladed shutter, as well as other updates (Leon Norris did the work!), from a fellow who had it listed in e-bay. I used the "buy now" option as I wanted it badly! I also purchased all the S-8mm reels he had available, which included two custom made 3000 ft. jobs made out of some type of clear plastic and their specially made wood cases, as well as several other reels made out of metal and plastic. A German-made 65mm scope lens and mounting bracket were also purchased from The Reel Image to complement my S-8mm set up.
I already had an older model GS-1200 (also obtained from e-bay and which was purchased in the mid 90s) that was recently refurbished by Leon Norris; I just sold it to my good film collector friend, who is also part owner of the old Hemet theater in Hemet, California. He had been wanting to own one of these S-8mm beauties so bad he could just taste it, so he's very happy with it.
Anyhow, my question to you, S-8mm aficionados, is: did I made blundering mistake by buying this rather costly GS-1200?...
-Frank J Manrique
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Frank J Manrique
Junior
Posts: 4
From: Redlands, California
Registered: Dec 2007
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posted February 28, 2008 04:07 PM
Thank you for the response, Alan and Claus!
For what I've been told, only New Model GS-1200's are capable of being modified with the longer arm conversion by virtue of having stronger drive motors. However, what remains to be seen (no pun!) is what the short/long term usage will reveal.
By the way, few things I failed to mention is that the New Model GS-1200 was also outfitted with a higher wattage lamp, it has a 1.1 primary lens, the handle was outfitted with a soft rubber cover, as well as having been recently worked on by Leon Norris. My friend Dave, who bought my other projector, and I recently ran side-by-side comparisons between the two GS-1200s which revealed that the New Model unit to be quite a bit brighter than the older model. With the new scope lens in place, imaging seems to be exceptionally bright even when projected in a rather large scope screen (12 foot, the widest I can use in my home theater room).
The "acid" test will be when we play back a Derann's print of Ben-Hur (which will be put on two large reels so we can have an intermission--just like in the good old days!) and more so when we put together a full length feature on the super-large clear plastic reels...
-Frank J Manrique
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David Pannell
Phenomenal Film Handler
Posts: 1072
From: Horsham, West Sussex, UK
Registered: Nov 2004
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posted February 29, 2008 09:19 AM
Kevin is absolutely right.
I keep telling myself not to keep getting involved with this lamp / transformer question, having previously posted a thread on transformer theory.
However, I can't sit by and see disasters about to happen, especially with our beloved equipment.
A transformer's ability to supply a certain load is inherent in its design, and if the secondary winding is overloaded, this means that excessive current is being drawn by the primary winding - this goes for auto-transformers as well as ones with separate windings.
The crux of the matter is the VA rating of the transformer. This MUST remain constant and fixed. You can increase the volts of the secondary with putting on extra turns of wire, BUT you MUST decrease the amps by the same ratio in order to keep the VA the same!! (VA is the volt-ampere rating of the transformer and is the product of the 2 values). This applies equally to both the primary and secondary windings.
Otherwise, in the words of "Thomas the Tank Engine", there will be "Trouble Ahead", and it will be "Too Late"!
-------------------- Dave.
Valves and celluloid - a great combination! Early technology rules OK!
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