my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Basic Century intermittent pad shoe question

Author Topic: Basic Century intermittent pad shoe question Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 07-17-2006 10:49 PM                        This is a very basic question, but one which confuses me nontheless, and it doesn't help that the parts and parts numbers in the manual appear to be confused: on the 35mm pad show assembly, what secures the knob with the stop pin on the shaft, so that the knob doesn't spin on the shaft and the pad shoe clicks open and closed? It looks like a tapered pin. Do you simply push that out with a precision tool? Do some of them also have a screw instead?  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 07-17-2006 10:56 PM                     ..takes an allen wrench to pull the setscrew out..which holds that assembly in the main boss. - Monte  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 07-17-2006 11:00 PM                        What? I wasn't talking about the whole assembly, just the knob on the very end of the shaft which closes over the two balls which ride on the springs.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 07-17-2006 11:05 PM                     oh..sorry on that .. maybe Mark can walk you through on that one then... - Monte  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-18-2006 07:37 AM                     Michael, I've seen em made two ways. One is that the knurled knob at the end is machined one piece with the shaft that its on. If you losen that set screw and pull the assy. from the intermittent there is a small taper pin through the part on the back that is not knurled. Tapping that pin out with a small punch frees the whole thing up. Don't loose the springs and detent balls as I'm not sure thay are available as seperate parts. Also, you may have to press it apart on a small arbor press as the taper pin hole is reamed in situ and they can be difficult to get apart. The second version which I've seen on older machines is basically three seperate pieces with the same pin through the back piece and a pin also through the front knurled piece. Sometimes those springs actually break in the detent and I also normally take em apart for powder coating. You will need sme way to squeezr the thing back together to get the taper pin back in... a vice usually works for this. Normally in the field that whole thing is just replaced as a complete assy. There is an exploded view of it on page 15 of the MSC/SA manual (rev. 98) here in the F-T manuals section. Mark  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 07-18-2006 08:25 AM                        Newer ones from Strong used a "hollow" ball bearing which eventually shears in half...bad news. Have repaired 6 of these recently, using REAL ball bearings. (Bad one looks like "shot." )Louis  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 07-18-2006 05:55 PM                        quote: Mark Gulbrandsen Also, you may have to press it apart on a small arbor press as the taper pin hole is reamed in situ and they can be difficult to get apart. Thanks for the info. The ones I came across are of the latter type, where you can take the knob off from the operating side end of the shaft/stud. I don't quite understand the quoted text though.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-18-2006 06:15 PM                     "Reamed in Situ".... Just some old British Steam Engine slang for... they put the fuckin thing together in the proper position... sometimes in a jig... and then they drill and ream the hole for the taper pin. Hopefully you can understand what that means..... . Mark  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 07-18-2006 09:37 PM                        Oh yes, thanks, I had a litle trouble understanding what you meant because I had pitured what you said about the press wrong in my mind. I thought you meant somehow spread and widen the hole which doesn't make sense, but you meant getting the two pieces apart, yes, that makes much more sense.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-18-2006 09:58 PM                     Yes! Multiple parts that have had holes reamed through them can be a pain and may not just just slide apart... sometimes they will and sometimes they won't. A good example of won't slide apart is the older Simplex intermittents that have two taper pins through the sprcket and star shaft... You almost always need a small puller to get them apart. Well, If you have one made by Strong it will no doubt simply fall apart as Loius has indicated . Mark  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.