8mm Forum: ELMO SC-18 Speed Control

This is topic ELMO SC-18 Speed Control in forum 8mm Forum at 8mm Forum.

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Posted by Jon R Light (Member # 963) on November 26, 2007, 09:17 PM:

I have been made aware that there is a relatively easy way to add variable speed control to the Elmo SC-18 which has 2 fixed speeds. Does anyone have access to this conversion, or a schematic, or pictorial on how this is accomplished. It would be greatly appreciated......

All the Best,

Jon Light

Posted by Jon R Light (Member # 963) on December 19, 2008, 09:46 PM:

Found a place for this conversion ...

http://www.bioscomputers.ca/Elmo%20SC-18.htm

Posted by Robert Oakley (Member # 141) on June 06, 2009, 12:09 AM:

The sc-18 is not fixed speed. It has internal pots to adjust the speeds of both 18fps and 24fps. Most Elmo Super 8 projectors have a motor control circuit board.

Posted by Kevin Faulkner (Member # 6) on June 06, 2009, 05:45 AM:

The ST1200 series have an AC motor and they don't use a speed control circuit as they are synchronised with the mains frequency.

The rest of the Elmo super 8 sound machines all have a similar motor control board except the GS1200 which has a far more complicated arrangement due to the inbuilt ESS system.

Kev.

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