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» Film-Tech Forum   » Operations   » Film Handlers' Forum   » Sloppy Potts Platter Takeup

   
Author Topic: Sloppy Potts Platter Takeup
Cory Renkenberger
Film Handler

Posts: 2
From: Kendallville, IN United States
Registered: Dec 2008


 - posted 12-18-2008 01:03 PM      Profile for Cory Renkenberger   Email Cory Renkenberger   Send New Private Message       Edit/Delete Post 
I have been on hiatus from our theatre equipment for several months, and the owner recently asked me to investigate a platter take-up problem. Both platters that are controlled by the same Variable Autotransformer have been winding the film VERY loosely when they are on the Take-Up mode. I have replaced drive belts, checked platter speed, and I am wondering if the problem lies in the Variable Autotransformer itself? I have never encountered this problem with this platter, and we have been using it since 1984. Other than that it runs well. Any suggestions on how to increase the "takeup torque" on this unit?

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Monte L Fullmer
Film God

Posts: 8353
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 12-18-2008 01:08 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
(bad answer...)

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Mitchell Dvoskin
Phenomenal Film Handler

Posts: 1833
From: West Milford, NJ, USA
Registered: Jan 2001


 - posted 12-18-2008 01:10 PM      Profile for Mitchell Dvoskin   Email Mitchell Dvoskin   Send New Private Message       Edit/Delete Post 
Eh? The weight of the yoyo keeps the film tight. It is not really adjustable. However, I have seen the yoyo stick and not float freely, do to misaligned rods or dirty slide rollers. When this happens, it does not gradually drop down with the film, causing the takeup to run slower than it should.

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99


 - posted 12-18-2008 01:36 PM      Profile for Joe Redifer   Author's Homepage   Email Joe Redifer   Send New Private Message       Edit/Delete Post 
"Yo yo", LOL.

Anyway, check the roller spindles on the take-up path of the variac. It is likely that one of them is bent.

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Monte L Fullmer
Film God

Posts: 8353
From: Nampa, Idaho, USA
Registered: Nov 2004


 - posted 12-18-2008 01:48 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Yea, I call it either the "W" or the "Trombone" ... but heard the term "Yo-yo" many times....

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Louis Bornwasser
Film God

Posts: 4435
From: prospect ky usa
Registered: Mar 2005


 - posted 12-18-2008 02:29 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Can I assume this is a Strong/Potts platter?

BTW: WE service/supply Syracuse/Warsaw/Goshen, IN. Louis

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Tim Reed
Better Projection Pays

Posts: 5244
From: Northampton, PA
Registered: Sep 1999


 - posted 12-18-2008 02:51 PM      Profile for Tim Reed   Author's Homepage     Send New Private Message       Edit/Delete Post 
Takeup TROLLEY. [Razz]

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Joe Redifer
You need a beating today

Posts: 12859
From: Denver, Colorado
Registered: May 99


 - posted 12-18-2008 03:47 PM      Profile for Joe Redifer   Author's Homepage   Email Joe Redifer   Send New Private Message       Edit/Delete Post 
I think "Piece of shit" is the most accurate.

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Tony Bandiera Jr
Film God

Posts: 3014
From: Moreland Idaho
Registered: Apr 2004


 - posted 12-19-2008 05:25 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
quote: Joe Redifer
I think "Piece of shit" is the most accurate.

For once I agree with Joe. [Smile]

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