This is topic Old Projector Room/Static 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=010480
Posted by Adam Holland (Member # 4539) on 05-29-2010, 11:34 AM:
 
I have an old Fireproof projection room that doesn't have airconditioning. I have been having a problem with film jumping out of the leaver on the platter prior to going through the brain when running my header through to get the show ready to start when I thread. I am assuming this is caused by static due to humidity here in the deep south. Besides cutting a whole in the fireproof wall and placing a window unit what else would be my best option to remedy this problem. If this has been covered before I apologize for reposting it. Any ideas from all of you veteran film handlers on here would be appreciated.

Thanks,
Adam T. Holland
Director of Theatre Operations
W.C. Chamber of Commerce
The Historic Fiske Theatre
 
Posted by Mitchell Dvoskin (Member # 751) on 05-29-2010, 11:43 AM:
 

 
Posted by Jeremy Weigel (Member # 4208) on 05-29-2010, 11:49 AM:
 
High humidity usually means low to no static. What make/model of platter are you using?
 
Posted by Troy Powell (Member # 5505) on 05-29-2010, 12:10 PM:
 
Sounds like he might have a speco platter.His leader could also be sticky.Good ol filmguard or xekote might work.
 
Posted by Adam Holland (Member # 4539) on 05-29-2010, 02:51 PM:
 
Thanks for your advice. I have a Christie Autowind 3 platter.
 
Posted by Monte L Fullmer (Member # 2797) on 05-30-2010, 02:23 AM:
 
May not be a static problem, but a film build problem where the first part of the film on the deck is wound super tight from high speed film builds.

If this is so, I usually reach under and remove the belt from the motor and pulley and let the payout spindle on the MUT just freewheel and this reduces a tight wind on the platter.

..or, just have the booth personnel build slower ...

Good luck-Monte
 
Posted by Jim Cassedy (Member # 4115) on 06-01-2010, 07:22 PM:
 
quote: Monte L Fullmer
I usually reach under and remove the belt from the motor and pulley and let the payout spindle on the MUT just freewheel
WoW! I wonder how common this practice is? I've been doing this for years. I sometimes supply a bit of "hand tension" to the reel, but I never liked building up with the belt connected since I always thought it put extra un-needed tension and stress on the film.
 
Posted by Richard B. Perrine (Member # 409) on 06-01-2010, 09:11 PM:
 
I had this problem on an Christie AW3 years ago.....It was traced to the 3 rollers. The outer 2 with the springs pulling them in to the center roller (on the Brain)...contacted the center roller at an angle.
This was from either A) screw being loose where the roller mounted and pivited....or B) the actual shaft where the roller mounted on the arm was bent.
The film then had contact only on the lower part of the rollers and as it ran...it gradually moved up...until it flipped out of the rollers and the fingers on the brain.
In our case it was bent shafts...

RBPerrine@att.net
 




Powered by Infopop Corporation
UBB.classicTM 6.3.1.2