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Author Topic: Simplex Prototype
Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-10-2005 09:26 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
The sound drum has been moved back as far as it would normally be located down. This does indeed take up that slack film you are thinking about....... Have studied this quite a bit and its within one frame and that can be delt with in the lower loop on a Centiry if need be. A digital delay line would also serve equally as well for you "all-digital" analog playback fans.

Mark

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Alan Gouger
Jedi Master Film Handler

Posts: 501
From: Bradenton, FL, USA
Registered: Jul 2000


 - posted 05-11-2005 12:12 AM      Profile for Alan Gouger   Author's Homepage   Email Alan Gouger   Send New Private Message       Edit/Delete Post 
Where is the shutter on that Century portable?
Looks like a lamphouse where the shutter would be. [Confused]

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William Hooper
Phenomenal Film Handler

Posts: 1879
From: Mobile, AL USA
Registered: Jun 99


 - posted 05-11-2005 12:24 AM      Profile for William Hooper   Author's Homepage   Email William Hooper   Send New Private Message       Edit/Delete Post 
quote: Richard Fowler
Mazda was the trademark name that General Electric used for projection and stage bulbs. the initial use was in the early part of the last century.
Initially it was also the screw-type base, which is still called a 'Mazda base'. GE revived the name for some bulb lines a few decades later, some of which had bayonet-type bases; it sort of blurred the 'Mazda' background, but probably was a good idea for maintaining a brand identity.

It is not commonly known that 'Mazda' is named for a mythological god of light, not because the bulbs screw in with a rotary motion.

Edit:
Of course, there's a web page about Mazda lamps.

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Lindsay Morris
Expert Film Handler

Posts: 233
From: Darlington, WA, Australia
Registered: Sep 2002


 - posted 05-11-2005 04:32 AM      Profile for Lindsay Morris   Email Lindsay Morris   Send New Private Message       Edit/Delete Post 
Geez, That "green" Century is certainly one very compact and innovative "home cinema" unit.
Like to see a close up of just how that sound head all works but maintaining sync should not be much of a problem... just have a nice big fat loop after the intermittent holdback sprocket. Gonna bounch around a bit though.. a bit like a very early Raycophone J1 so called portable often used in OZ years ago.
The amp unit is not a TQ1 base but either a B&H 666 or 555 base which have switches for Projector Motor, Amplifier, Bass & Treble controls plus Optical Vol and Mag/Mic volume and the far right hand switch is the projector Monitor switch.
The power supply attached to the front leg is a 666 Marc 300 power pak and I am betting that the lamp inside is a Marc 300 and in which case the screen lighting for a home cinema will be magic but expensive as when we can get them here in OZ the Marc 300 lamps cost around $200 Aust and last about 50 hours if you are very careful with them!!!!
A very compact and well thought out modification.. hang a double MUTT off it and it would be a very good performer.
The B&H 666 with a new Marc 300 lamp installed can light up an 8m wide screen quite comfortably.. certainly not quite as bright as the Xenon in a 35mm unit but pretty damn good for 16mm.
I still have 3 666 units one of which sits in the Kookaburra bio box and gets used from time to time running the odd 16mm special interest short prior to a 35mm showing.
The change to 35mm is quite noticable and so it should with a much bigger hole to squirt the light thru plus a far bigger lamp behind that again... like a 2kw xenon as compared to 300 watts on the B&H 666.
It has given me food for thought in my home screening room where space is VERY tight and I have exactly 50mm between the front wall and the inching knob on the RCA 1050 soundhead. The rear end is slighty roomier with about 75mm between the rear wall and the behind of a cut down Calder 10" ex carbon arc lamp with a 36 volt 400 halogen lamp in front of the mirror and acceptable light but somewhat yellowish as compared to the Marc 300.
Is there any contact details available for the designer of the "green" Century??... love to know some more.

Lindsay

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Scott Balko
Expert Film Handler

Posts: 136
From: Redwood Falls, Minnesota, USA
Registered: Apr 2000


 - posted 05-11-2005 08:14 PM      Profile for Scott Balko   Email Scott Balko   Send New Private Message       Edit/Delete Post 
Correct me if I'm wrong, but aren't those NAB hub tape reels on the "green century"? Are they just there for looks or do they actually serve a purpose? They're at the most 14 inch reels. They look pretty cool, but I've never seen NAB hub reels used for film.

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 05-11-2005 08:40 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Yes, they are - 1/2inch, 14 inch NABS. I thought that was kinda funny seeing tape reels up on those spindles. Can't answer why these were mounted up there..maybe for looks.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 05-12-2005 08:12 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
It appears they are using only one flange of the reel as there is an exposed core viable and I beleive a standard guide post as is often used on dubbers

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Fred Georges
Master Film Handler

Posts: 257
From: Lombard, IL, USA
Registered: Jun 2000


 - posted 05-16-2005 08:05 AM      Profile for Fred Georges   Email Fred Georges   Send New Private Message       Edit/Delete Post 
I got to see the gear train of that prototype "Simplex". It looks virtually identical to a Model "C" Century right down to the flyball governor operated safety shutter. So the question is Did Simplex re-work a Century or vice-versa?

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