Sorry I meant a Light rail vs a Light track. The light track has the motor
on the end of the rail and moves the fixture back and forth by a chain. The
light rail has a motor that creeps along the rail with the fixture.

http://www.hydrofarm.com/content/accessories.html

"Bryan" wrote in message
news:v2trf.175253$ki.107287@pd7tw2no...
Looking to purchase a light mover but am wondering the pro's and con's
between a light track and a light mover. I would guess the light track is
noisier as it uses a chain to move the light fixture back and forth.

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