This is topic Orphan Simplex Turret help needed ASAFP! in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.


To visit this topic, use this URL:
https://ft-forum.com/ft/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=008072

---

Posted by Aaron Sisemore (Member # 145) on 06-11-2006, 02:14 AM:
 
I got six of these NSS Simplex (Ballantyne reps dated them ca. 1980) PR1050 heads with VERY early and possibly unique TU-2000 manual turrets:











My problem is that I just recently changed out the straight gate assembly for a curved one to correct a noise and stability problem that nothing else I have tried would fix. My scope picture is still aligned fine with the screen, but the flat picture is almost 2 feet off center to the right. There is no visible way that I can see to do a per-lens lateral adjustment (like you can do with the current style TU-2000 turret) to correct the off-center flat picture.

Screen is common height with moveable top masking FWIW.

Anyone have some ideas??? Anyone else ever come across one of these?

Does anyone else out there have any clues?

Thanks in advance!

-Aaron
 

---

Posted by Adam Martin (Member # 641) on 06-11-2006, 02:20 AM:
 
Maybe insert a shim in the lens collar?
 

---

Posted by Phillip Grace (Member # 2262) on 06-11-2006, 02:54 AM:
 
Can you fit an eccentric sleeve around the ends of the focus shaft? The lens barrel must run backwards and forwards along some kind of shafts, so it might be possible to fit an eccentric bush for one or both, and adjust the lens position that way. Cinemeccanica do it using shafts with eccentric ends, for the same effect.
 

---

Posted by Stan Gunn (Member # 554) on 06-11-2006, 07:22 AM:
 
The lense mount screws are adjusted to alighn the lens, memory cant go back further as to method.

Hi Phill.

Stan.
 

---

Posted by Richard Hamilton (Member # 321) on 06-11-2006, 08:25 AM:
 
was it ok before you changed the gate assembly? if so, the turret has nothing to do with the problem.

rick
 

---

Posted by Steve Guttag (Member # 268) on 06-11-2006, 10:42 AM:
 
Are you judging the 2-feet based on target film or based on apertures? Take target film and a laser; if the laser bullseyes to the crosshair of the target film, it is dead on.

Aperture plates are notorius for being inaccurate for Simplexes. Often the end of the plate needs to be filed to allow it to go into the trap far enough. Also watch out for misformed aperture plates...the slanted portion is also often wrong and will prematurely stop the plate from going in far enough on a Simplex curve gate...some simple rebends will allo it to properly bottom out on the end of the plate.

Again, I would verify with target film your problem. As I am not familiar (other than seeing it in advertising way back when) I can not comment on the turrets functionality.

Steve
 

---

Posted by Aaron Sisemore (Member # 145) on 06-11-2006, 11:59 AM:
 

quote: Richard Hamilton

---

was it ok before you changed the gate assembly? if so, the turret has nothing to do with the problem.

---

quote: Steve Guttag

---

Are you judging the 2-feet based on target film or based on apertures?

---

Both. Its way off with the PA35 as well.

I'll try to get some time to investigate this further and report back. Until then, any other suggestions are welcome!

-Aaron
 

---

Posted by Richard Hamilton (Member # 321) on 06-11-2006, 12:46 PM:
 
what kind of plate? If it is a dual formart plate, then yes one format could be offset because of one of the stops being set incorrectly. Your pictures did not show, so I was just curious.
 

---

Posted by Aaron Sisemore (Member # 145) on 06-11-2006, 01:09 PM:
 
Standard Simplex single format plates.

-Aaron
 

---

Posted by Brad Miller (Member # 2) on 06-11-2006, 02:36 PM:
 
One word Aaron, one word...

Can you get some brighter pictures of the film side of the turret? It's hard to make out any screws or potential adjustments. I see some allen head screws on the front. If you loosen them, can you move the entire lens around possibly? (I've never seen one of these turrets before.)

If you end up not being able to find an adjustment, Adam's suggestion above will certainly work. I've done it many times.
 

---

Posted by Monte L Fullmer (Member # 2797) on 06-11-2006, 11:21 PM:
 
I have this pix of the early TU-2000 turret mounted on a studio gate NSS Simplex PR-1050



..maybe, this can help out some...
 

---

Posted by Dave Macaulay (Member # 813) on 06-14-2006, 09:21 AM:
 
These turrets were originally made for Famous Players in Canada, they may have been sold elsewhere but FP wanted a manual turret - maybe the electric ones were too expensive? - and this is the result.
The left/right adjustment is pretty simple.
Look in the hole on the outside edge (visible in the fourth photo just left of the bottom of the "handle") and adjust the lens focus until you see an allen head screw aligned with that hole. Loosen it. The lens mounting barrel will now rotate, it is eccentric and the lens centre will move. With RP40 set the image left/right position, ignore up/down. Then lock with that allen screw and set up/down with the adjustable turret rotation stop. There isn't a LOT of travel left/right, you may need to shift the projector and adjust both lenses.
 

---

Posted by Aaron Sisemore (Member # 145) on 06-14-2006, 02:10 PM:
 

quote: Dave Macaulay

---

The left/right adjustment is pretty simple.
Look in the hole on the outside edge (visible in the fourth photo just left of the bottom of the "handle") and adjust the lens focus until you see an allen head screw aligned with that hole. Loosen it. The lens mounting barrel will now rotate, it is eccentric and the lens centre will move. With RP40 set the image left/right position, ignore up/down. Then lock with that allen screw and set up/down with the adjustable turret rotation stop. There isn't a LOT of travel left/right, you may need to shift the projector and adjust both lenses.

---

I was told this a while ago, and that was the first thing I tried. 'isn't a lot of travel left/right' is a gross understatement. I saw ZERO movement of the image by rotating the barrel. I might try again, but am not expecting any improvements.

Next?

-Aaron
 

---

Posted by Mark Gulbrandsen (Member # 72) on 06-14-2006, 09:30 PM:
 

quote: Aaron Sisemore

---

Next?

---