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Author Topic: Vertical Jitter (SRD/CP500) Thomas King Expert Film Handler Posts: 119 From: Sheffield, Yorkshire, England Registered: Oct 2004 posted 02-01-2005 06:12 PM                        Dan: thanks for posting a picture, that's almost identical to my machine, only slightly newer! (I have no idea where my camera is). I can't find how to lubricate the sound drum bearing assembly. I've examined the shaft cover, but all that's on it are the two securing hexnuts; I can't find the dimple ball that Monte mentioned. Does anyone have a picture of it?  |  IP: Logged Dan Harris Film Handler Posts: 86 From: Bristol, UK Registered: Jun 2003 posted 02-02-2005 04:12 AM                     quote: Gordon McLeod Interesting is that factory or an add on? These are brand new direct from the factory, awaiting installation. The manual has maintenance diagrams for this and a dashpot so I expect you can specify which you want. I've never worked on a Vic 5 with a dashpot on this side of the pond, but from my time on Vic 9's I remember them to be more substantial that the spring assembly.  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 02-02-2005 03:03 PM                     Thomas, not all V5s have the dimple for shaft oiling, so yours may not have it. I don't know if they all have the slip clutch, it looks like a four fingered springy washer, between the flywheel and the end of the shaft. I've seen these weaken and wear out so the flywheel is slipping with respect to the drum/shaft. Ironic as it's purpose is to allow slip while the drum comes up to speed. Gord, that's how the bulk of V5s in this country are set up, at least the ones I've seen supplied/installed by SA. I'm servicing 12 this week supplied/installed by Robell Sound, these have the hydraulic damper, a la V8, V9. Also I've yet to see one with the much talked about curved gate, even brand new. What is it with the basement readers? You have to slide the lamphouse back to gain access to the lateral adjustment screws, which then don't allow enough movement to correctly align the blasted thing! Sometimes I've had to shim the whole assembly out from the casting, this one I was working on today, there were no shims and I couldn't get the CCD board moved far enough towards the projector, which suggests that the film path alignment through the sound head as a whole is off, but how the heck would you adjust that?!  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 02-02-2005 04:00 PM                     Been there, done that....in addition to an occaisonal shim which Cinemeccanica will supply, we have had to enlarge the circuit card mounting holes in rare instances. Most of the V-5 especially if they have the factory basement reader are going to have the 5V705 sound drum casting which has ball bearings instead of the need to oil sleeve set up. The "simplified" oil type drum set up was more common on the older projectors such as a V-4. The spring damper is several hundred$$$ cheaper than the oil dashpot and I found there was less chance of film scratches that the oil dashpot is capable of doing if you did not keep the tiny film path rollers clean and lubricated.  |  IP: Logged Thomas King Expert Film Handler Posts: 119 From: Sheffield, Yorkshire, England Registered: Oct 2004 posted 02-02-2005 09:03 PM                        Pete: That's a clutch? I thought that was just a sprung clamp! How much slip should it have? As far as I can tell, it's only held in by a screw, and if I undo it, it'll just become really lose. At the moment there's no slip; probably not too much of a problem as it takes 5 seconds to ramp up. And do you want some dashpot oil? Everytime someone orders spares for out projector, they order it; despite the fact we don't have a dashpot I should really get SA back to service the whole lot, but I really can't afford it. If it's not possible for me to lubricate the sound drum shaft; can I assume that I don't need to, or do I need to dismantle it some more?  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 02-03-2005 03:48 AM                     Yes that wee spring device is a clutch of sorts, a crude one. It shouldnt' slip much at all, my point is that if it slips too much you won't get good smoothing from the flywheel. I've also had problems with them in the past due to wear on the sprung grounding plate ( I assume it's there for anti static grounding purposes ) that resides inside the flywheel cover, on one very early Vic 5 up here it had disintegrated and the bits were rubbing between the flywheel and the cover, causing issues. No, if there's no oiling point on the shaft housing don't oil it! There are other companies & people equally, if not more capable of servicing your Vic 5, probably cheaper too! Contrary to popular misconception it's not rocket science....  |  IP: Logged Paul Carey Film Handler Posts: 17 From: St Andrews, Scotland, UK Registered: Feb 2004 posted 02-03-2005 10:47 AM                        Be careful if your messing about with the cross shaped spring/clutch clip on the flywheel. I snapped one when trying to bend it back to the correct shape after we had problems one of our vic 5's. Last time, many years ago now, we had a problem with analogue sound being warbled, a quick change of the sound drum bearings and a new spring on the fly wheel and we were back in business. so you never know, it could be something similar.  |  IP: Logged Thomas King Expert Film Handler Posts: 119 From: Sheffield, Yorkshire, England Registered: Oct 2004 posted 02-03-2005 11:23 AM                        I think I'll avoid fiddling with it until I'm sure I need to My main problem at the moment, when the feature's running, the tensioning device isn't actually being used: it stays on its stop. Is this normal? When running a feature, what sort of clerance between the stop post and the tensioning block is common?  |  IP: Logged

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