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Author
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Topic: Beaulieu: Fast & Easy Speed Setting Procedure
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Andrew Woodcock
Film God
Posts: 7477
From: Manchester Uk
Registered: Aug 2012
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posted September 17, 2017 02:51 PM
That's all the matters Stuart, the fact that you now have no problems.
I haven't found this aspect of my main machine to be anything other than 100% reliable to date Stuart, so other than dabbling in the research aspect of all this Capstan drive theory, I have absolutely no experience yet regarding any practical repair work on this part of the machine.
My other one (like yours),I haven't had too long and don't use it too much either to be honest, but again, no hassles at all to date.
So I've had the Stereo one nigh on 5 years at least now, so if used regularly and handled and stored correctly, with respect, I'd say you'd be pretty unlucky if you continue to see regular problems with your machine.
I've found them totally reliable so far. ![[Smile]](smile.gif)
All of my problems, mainly amplifier related, were present when I first got the machine but since getting it all sorted, it's worked like a dream, used almost daily since.
I changed the main motor out also in the early days but I since was able to fix the problem on the tacho coil original motor and that was only due to the cables being originally permanently soldered on the tacho terminals, which now they are not, so that won't ever happen again thankfully.
Dry joints can be an issue on these now, but that applies to any machine of this age and especially those heavily laden in electronics.
I think the main thing with all our projectors now is to use them regularly and store them well.
I now have too many to use them all regularly and so I try and concentrate on using my most valued in order of priority to me, to keep these at least healthy and fully working at all times.
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"C'mon Baggy..Get with the beat"
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted September 18, 2017 12:51 AM
Hi Stu, Andrew,
Happy to ear « flutter » is probably due to a poor transmission phenomenon between Motor and Flywheel for this particular case.
This is cohesive with a belt slipping issue. (means film speed , in heads area, is maxi 24 fps and below , 20 fps and for a 1 or 2 sec period ,
for exemple).
So, I suggest :
A) Check Motor/Flywheel pulleys alignment (they have to work in a same plane)
B) Check Belt condition (more particularly looseness , dry rubber material , loss of material elasticity)
C) Remove belt and gently dry both pulleys grooves using a light thinner (removing grease evidences or any dust deposit)
Anyway, If any doubt, do not hesitate to renew Capstan belt.
Also , as above mentioned suggestion , check driving regularity/smoothness between Pinch-roller and Capstan shaft with a piece of film leader (machine powered OFF).
As necessary, lubricate ball bearings (with a spray, thin oil, Flywheel removal and pinch Roller could be necessary) initialy.
Important : If Pinch-roller has to be removed, dont forget to turn CLOCKWISE for retaining screw removal.
Do not overtorque during screw re installation (Lubricate threads, 2 "tip fingers" torque only).
Back to your speeds recording, I forget to tell you that the equivalent fluctuation is not 0,3fps but
0,1fps actually !!!!
(Because I forget take account of speed ratio between pulleys which is around 1/3.... ![[Wink]](wink.gif) ).
So, records are very, very acceptable and your Electronic Card / Capstan Motor system seem to be healthy enough at this time.
Let us know
NB:
If now, Stu machine is running smoothly for a long , I like the idea of a fixing issue without "almost expenditure" (exepted FREQUENCEMETER-MULTIMETER investment) and a fast DIY process closed loop
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