Michael Leake

To all about lipo batteries. I am going to check my batteries today and the set up. I will get back with a post today. Michael Leake

Steven; I feel sure this may not answer your question, however; Some time ago I constructed a battery pack with two 15.3 V lithium polymer batteries. I have a buck convertor with which I can regulate voltage and amps from 3.7V to 15.3V. I can get exactly the voltage I need, and I can switch between batteries without interruption of power. I have no idea how long the power will last because I have never run my arri 16 more than 30 minutes. I can also use two different poser cords, one an arri original power cord and one which is custom built.

I would just buy another one from ebay. I think the expense of shipping and repair would not be worth it, unless you do it yourself.

IF you have not thrown it away, I was able to replace the bearings in this motor. They are readily available on a website called Victor Bearings. Mike

Could you post some pictures of the variable speed motor? I can tell you what I have done. From ebay, I purchased a not working, for parts only arri variable speed motor, the kind you twist the grip enhanced case to change the speed. I think I got one for $15.00 and just took it apart. They are tedious to disassemble. The inch knob has to come off, the two long bolts have to come off, the little ball on the shaft that drives the motor has to come off. You have to be delicate in pulling things apart, as I recall. The brushes on the motor shaft are spring loaded and while they will not fly out across the room, they can be bent if not carefully removed. It take much patience.

I would like information if anyone has some on: an Arriflex time lapse motor manufactured by 'Camera Equipment Co., New York City, model 440-A and Motor controller Model 440. I purchased on eBay. It was a very good price. If there is someone who has used one of these, can you let me know How they work. What I know from plugging them in is: It appears to have 2 speed, 4 frames per second(marked ¼ on the motor) and 2 frames per second(marked ½ on the motor). I am guessing at this..It may a continuous 4 or 2 frame per second setting as there is a switch marked 'stop motion or continuous' on the motor controller box. There may be a timed iris/shutter cover for the lens which co-ordinates with the time lapse, but I did not get that devise.

I built this power supply for my arriflex 16 st. Two 15.2 Quad copter lipo batteries, separately accessible, and with adjustable output voltage from 3.7 volts up to 15.2 volts, adjustable amp output and two different plug types.

http://cinetinker.blogspot.com This web site might help also, an arriflex 16 rebuild

there are others who are much better at this than me, however, I have a photo of what I believe is the wire you have tested. The red arrow is the exterior contact point I believe you tested. The green arrow in the photo indicates the location and path of that wire. The purple arrow is the terminal point which is soldered or attached by a screw to the power switch(140.jpeg and 159.jpeg)on the inside of the camera. I think this wire could be shorting out at the red arrow contact point(I seem to remember this is an insulated terminal point. ),the wire could be compromised, or it could be disconnected at the power switch. There may be other solutions to this which other members have better knowledge. M.L.

Thanks Exactly what I needed M. Leake

What filters work for black and white film and why? Will color filters produce any results? I am experimenting to see what results I can get.

Charlie, This is great information, now if I can find a portable ¼" tape recorder that will work with this motor Thanks , Michael Leake

Magnetic Sales Corp pictures.

Has anyone any knowledge of an arriflex 16 motor made by “Magnetic Sales Corp.” ?

eBay is really a roll of the dice, I have purchased good quality working items and items that did not work at all and required quite a bit of repair. Test each motor first, they could both be bad, but I think that may be a low probability. See if you can move any of the moving parts of the motor by hand, they could be rusted or corroded in place.

The best I can offer; clean all contact points, on the camera where the magazine makes electrical contact. all points in the magazine and on the motor. If possible, run test wires to the motor with the 8.4 volt battery to see if the motor runs. There is a wire inside the camera that could be broken. The torque motor brushes may be too dirty. The torque motor could be a 12V motor and is not getting enough volts or amps. Did the torque motor work in the past or is it new. Less likely is very dirty bearings in the magazine which could prevent the magazine from working. More information would be good.

Sean, thanks, It is always best to get experienced advise. I will dis assemble and clean each shaft. Thanks Michael Leake

assistance from anyone; I am rebuilding 4 torque motors(3-400' and 1-200') One of the 400' motors is 12V, the other 2 are 8V. The 200' torque motor is 8V. I may convert these all to 12V so they will work with the tobin variable speed camera motor. In the image, the red arrow indicates what I think is a lubrication points(for the gears) on this motor. On the motor I have seen four or five of these(2 interior and 2 or 3 exterior. I have some arri oil for these points. The yellow arrow indicates where I think the arri grease could be applied, however I did not really see grease on these gears(the phenolic material). I am wondering if they really need grease or they may stay dry. I was also able to apply oil to the motor bearings. Please advise me further if you would. thanks Michael Leake

Sean, thank you very much, michael leake

TO: anyone I purchased what I think is called a periscope attachment for my arri 16st. It seems to work just fine and I think I attached it correctly. If anyone has more knowledge about this item or an owners manual, I would appreciate the information. I also recently purchased two arri 200' magazines and one motor to fit. I am servicing them so they will work. Thanks Michael Leake TO; Mark Day, yes post pictures, always interested.

assistance if possible; I purchased a canon C-16 Macro ZoomC10x12 12-120mm lens. It has an arriflex standard mount and it does fit into my arri 16-ST bayonet opening. When I have the lens focused to infinity, and I have the zoom setting at 120, everything is in focus. With the zoom set at 120, I can change the focus down to 5' and even down to a few inches using the macro ring. When I change the zoom ring downward to 12 or even 40, everything at about 20' to infinity goes out of focus. Any suggestions about how to adjust this lens? OR fix this problem? Or just live with it? thanks to anyone and all. Michael Leake

Mark Dunn: It can be done, but even the Mamiya 50mm lens gives a really wide angle for the RB67 medium format camera, I just finished a test with the mamiya 50mm on a makeshift mount. It works, however, it does not give you wide angle at all, infact it looks like a 75mm standard lens in the arri viewfinder, adapter project is over.

Lenses: has anyone adapted a Mamiya RB67 lens to an Arriflex standard mount??? I have several RB67 lenses. I know the focal lengths are different, but is it possible?

thanks Dom Jaeger, good information form me. ML