Power Arc SL 76" lightbar

tsquale

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Oct 12, 2010
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A neighboring VFD replaced this with a Freedom IV on their 2004 rescue. I inquired about what happened to it and was told it was sitting in a closet. They didn't want to give it away, but were interested in selling or trading. I ended up trading them a Whelen Liberty that they'll use on another rig that needs some updating. It is in VERY good shape for being 20 years old.


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The truck it came off of:
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Wow. Unique bar trying to think outside the box. Can the angle of the heads be adjusted? Looks like it is set up for better off axis warning then head on. Would love to see closeups inside running if you ever take a dome off.
 
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Never seen one of those in the wild. Domes look similar to like a cut down street hawk
 
So do the motors actually go fwd-rev-fwd-rev? back and forth?

I always assumed they ran at a constant direction and used mechanical linkages or something to get the back and forth motion
 
So do the motors actually go fwd-rev-fwd-rev? back and forth?

I always assumed they ran at a constant direction and used mechanical linkages or something to get the back and forth motion

The second video shows how they run. The motors run one direction continuously. They spin a series of gears that make the oscillating motion. The LEDs are attached to the gears by spring bands.
 

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