This is topic D.I.Y Wrap Detector in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.


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Posted by Graham Ritchie (Member # 5226) on 08-05-2009, 08:44 PM:
 
A few years ago we managed to get the OK to replace one of our three projectors with a "Kinoton" more Kinoton projectors to come in the future hopefully, anyway the problem I had was to find a way to protect to projector from a "wrap up" either from the five deck Christie next to it, or from film running down the roof from the Cinema 2 five deck which we often do. I did look at a modern 8 screen cinema, one projector one platter and wrap detector set up, it was OK for them but no use for how we operate, so in the end and with a little cash, decided to make my own, here are a few photos.

Kinoton is just to the right

In the event of a wrap up the bottom part is pulled out of the ball and spring loaded brass door latch you can see in the photo, the switch on the left is wired to the automation as soon as its activated the projector shuts down, the theatre lights come up etc.

Comes to a halt about about here, there is sufficient film for the projector to run down and come to a halt with no strain on the film or the projector. I made two more, one for our Simplex in Cinema one and the other for the Bauer U4 in Cinema two, that one I still have to fit. The only difference with those two is that they are a couple inches longer, all three are fitted next to the projectors. The most expensive item was the rollers The material was bought from a hardware store, aluminium supplier and a sheet metal place for the steel plate from old off cuts. It was easy to make about 6 hours work at home for each one, drilling and tapping for the rear rollers at the back took the time, you cant see them in the photo. In the end it works great, it has only shut down once for the Kinoton "and that was my fault" and once on the Simplex, a wiring problem on that platter which was quickly fixed, we now feel a lot happier running films up and down the roof with the knowledge that the projectionist wont be shot at dawn if something goes wrong.
One last photo of our pride and joy in Cinema3

Its wrap detector just behind the projector.

Graham.
 

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Posted by Andy Bajew (Member # 5330) on 08-05-2009, 08:55 PM:
 
Do you not get any scratches with all those rollers? That's a little excessive for running on the base side. I run some of the oldest platter equipment known to man and haven't personally had a brain wrap since I have been working as a projectionist.
 

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Posted by Graham Ritchie (Member # 5226) on 08-05-2009, 08:59 PM:
 
No scratches we ran "Australia" for 5 months on that screen it finished its run without a mark.
 

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Posted by Brad Miller (Member # 2) on 08-05-2009, 09:22 PM:
 
Rollers do not scratch. Even if they don't spin, they do not scratch. That is why they are beveled in the middle where the picture is. The only way rollers scratch is if they are not aligned properly, of which his wrap detector is designed to keep everything in line, so it isn't much of a possibility for damage.
 

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Posted by Jarret Chessell (Member # 5077) on 08-05-2009, 10:21 PM:
 
I must say I really appreciate how you took the time to design it in such a way that it can have some slack left on the film after the motor spins down. I'm sure lots of us can sympathize with coming into a booth after being away for a while and having to re-align all the rollers because someone has had bad starts or shut-downs and yanked the rollers away from the wall (not to mention damage to film).
 

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Posted by Joe Redifer (Member # 3) on 08-05-2009, 10:50 PM:
 
A bit off topic, but why must Kinotons be attached to monstrous towers? Why can't they be like normal projectors? Please explain to me the extreme advantage that this offers.
 

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Posted by John Wilson (Member # 269) on 08-05-2009, 11:23 PM:
 
(Kinoton envy)
 

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Posted by Cameron Glendinning (Member # 3516) on 08-06-2009, 05:34 AM:
 

quote: Joe Redifer

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but why must Kinotons be attached to monstrous towers?

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quote: Brad Miller

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Rollers do not scratch. Even if they don't spin, they do not scratch.

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quote: Joe Redifer

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A bit off topic, but why must Kinotons be attached to monstrous towers? Why can't they be like normal projectors? Please explain to me the extreme advantage that this offers.

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They do make console mount projectors as well Joe.

Mark
 

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Posted by James Westbrook (Member # 3690) on 08-06-2009, 01:53 PM:
 
I couldn't help but notice the Christie platters in the photo the "tree" is gray colored instead of blue. All the Autowind 3 style platters I've encountered were blue, including a few 5-deck ones.
 

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Posted by Jarret Chessell (Member # 5077) on 08-06-2009, 07:36 PM:
 
If an SDDS track gets scratched in the woods and no one is there to hear it, did it really get scratched? wait, I think I told that wrong
 

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Posted by Steve Guttag (Member # 268) on 08-06-2009, 11:53 PM:
 
Its more of the Euro way Joe...that is to have everything build off of base...which, in Kinoton's case, gets you a column projector with a lamphouse hanging off the rear.

As to the advantages of a column projector...there are many...they are a LOT easier to work on/in. It has the advantages of a console but without the bulk. It also has the spindles incorporated into the projector rather than have reel arms that are often not well supported (flex) and collect dirt.

However, Kinoton does have the FP50 series if you like the console look and the PK60 if you prefer to hang the projector on the front of your favorite console or pedestal. And if you need a place to live, there is the FP40 series though I don't think it is still in production (boy was it deeeeeeeeep).

About the only thing I don't like about the current column design is that the lamphouse isn't well supported. They do make a support bracket for it but then you loose some of the advantage of the column's space saving design. It would be better if the bracket triangulated to the column to provide lamphouse support.

Steve
 

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Posted by Mark Gulbrandsen (Member # 72) on 08-07-2009, 10:36 AM:
 

quote: Steve Guttag

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It would be better if the bracket triangulated to the column to provide lamphouse support.

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