The Hawaii version Senior had a cruise light adapted to it.
The Cadet can not accept a 50 Watt 795X or 55 Watt H1 bulb. It cones with a 27 Watt bi-pin bulb.
The Seniors were very bright if the correct bulb was used, and focused properly, as seen in the video.
Flash rate ranged between 80 and 100 FPM.
In old 1978 Whelen literature effective CP was very close; Standard Rota-Beam 1057, and sealed beam 1134 . Due to the larger magnifiers in the Senior Rota-Beams, the effective CP would have been higher than the Standard Rota-Beams.
The 1964 Ford wagon, gold color with wood grained sides, on the left, was My Dad's (Sergeant's) personally owned car. This car had a blue/red split dome Whelen Rota-Beam RB11 on the dash, a large mechanical siren under the hood, and a town owned radio with long spring/whip antenna on the rear quarter. This was officially designated Grafton "Cruiser 17" (I have the paperwork so designating). This car was used on patrol from time to time, and to answer calls, as supervisor, while off duty. I would love to rebuild this car!
REFURBISHED ROTA-BEAM for my collection.
Rebadged Whelen Model Senior Rota-Beam.
Rebadged as: H. O. K. Sign & Signal, Inc.
102 S 26th St. Phoenix 34 Arizona
Model 100, 12 Volt, Serial # 00453
The stud mount was not a Whelen standard mounting option.
This light would have been early 1960s vintage.
Rota-Beam Standard Model RB11 shown for size comparison.
Looks like the same light on this Grafton, MA truck.