[SML] Motor controls in scenery

[PATRICK MCCREARY]

Travel limitations aside, sounds like some under-sized cable or an 
over-sized motor.

Patrick

On 4/7/2015 4:26 PM, Bill Conner via Stagecraft wrote:
> For installed motorized equipment, I've rarely not seen at least two
> limit switches at each end of travel - a normal end of travel and an
> over travel or ultimate limit.
>
> What do you all do for scenery for a relatively short run production?
>
> This was a one person platform lift - cable and drum pulling a
> platform up rails.  Single upper limit poorly mounted was not struck,
> nico and thimble jammed in pulley and the wire rope broke and person
> on platform plummeted the 6' or so to bottom.  Stitches, no permanent
> injuries reported.
>
> Thanks!
>


-- 
G. Patrick McCreary
Technical Director
Department of Theater and Dance
Indiana University of Pennsylvania