Specto FS Motion Analyser wiring help

[Paul Shepherd]

I recently purchased this nice projector, but the variable speed and hand crank do not work.

I have searched for a few weeks on details of the wiring and have not found much.

Any suggestion or direction no matter how small would be appreciated.

I can open the base:
Right now I see 2 wires (one red & one black) that are loose and both seemed to possibly go to something.

I think there is a missing resister or some device, but not sure what.

[Maurice Leakey]

Paul

Can't help about speed control but I think the missing component is the capacitor which was used as a suppressor for sparking from the motor. In the early of television such motors often caused interference and a lot of the 1950s projectors had this capacitor which was fitted between the live and earth connections.

Cinerdistan has a lot of Specto material which might be of help, it includes a pic on page 5 which clearly shows the missing capacitor. Click on third picture to see.

Specto (cinerdistan.com)

You can also buy printed manuals from Oldtimer Cameras, both Instruction and Service. I thoroughly recommend this company whom I use quite regularly.

Specto Motion Analyzer Printed Manual (camera-manual.com)

[Paul Shepherd]

Brilliant. Thanks so much for the help.
you don’t know where I might find a capacitor, do you?

[Maurice Leakey]

Paul
With differing electrical equipment nowadays you shouldn't need a suppression capacitor.
Your projector will run quite well without one.
However, if you find you do need one the normal one to use is a 0.1mfd ceramic capacitor.
Most electrical suppliers would stock one, you could try R.S. Components Ltd. (Once known as Radiospares).

Capacitors | Industrial Tantalum & Ceramic | RS Components (rs-online.com)