1955 Francis Searchlight - 350W Short Arc - Restomod
Hi folks!
Here is my second short arc build.
This project started with a Francis marine searchlight made in 1955. I did a rather extensive restoration and modification on the light. It's now a megathrower in a good looking package :thumbsup:
I first tried a 400 watt metal halide lamp in the light, but that is now replaced with a 350 watt modified UHP lamp (Ultra High Performance)
A few details:
-55 Million Candela
-Range: 14.8 Km/9.2 Miles - 0.25 Lux, or 7400 meters - 1 Lux
-19.000 lamp lumens
-200mm/7.9" custom parabolic reflector with Aluminium-Quartz coating from Phoenix Electroformed
-350W modified UHP lamp. 1 mm arc gap
-UHP Ballast
-40 and 60 mm cooling fans
-Borosilicate front glass
-Stand in laminated pine with Mahogany Sapele veneer
Started out like this:
And ended up like this:
You can read the thread for all the build updates, or click on the pictures/shortcuts below:
Starting the sanding:
Reflector mounting:
Air intake/cooling:
Lamp adjuster and air outlet:
Polishing and beamshot with the old MSR lamp:
The stand and install of the old lamp:
Picture of the finished light and some beamshots with the old lamp:
Beamshot with the current 350 W UHP lamp:
Installation of the 350 W UHP lamp and Lux readings:
Comparison with my other SA light:
If you are interested in a different type of short arc project, check out my 62 Million Candela 850W 14" Stock pot light
Hi folks!
Here is my second short arc build.
This project started with a Francis marine searchlight made in 1955. I did a rather extensive restoration and modification on the light. It's now a megathrower in a good looking package :thumbsup:
I first tried a 400 watt metal halide lamp in the light, but that is now replaced with a 350 watt modified UHP lamp (Ultra High Performance)
A few details:
-55 Million Candela
-Range: 14.8 Km/9.2 Miles - 0.25 Lux, or 7400 meters - 1 Lux
-19.000 lamp lumens
-200mm/7.9" custom parabolic reflector with Aluminium-Quartz coating from Phoenix Electroformed
-350W modified UHP lamp. 1 mm arc gap
-UHP Ballast
-40 and 60 mm cooling fans
-Borosilicate front glass
-Stand in laminated pine with Mahogany Sapele veneer
Started out like this:
And ended up like this:
You can read the thread for all the build updates, or click on the pictures/shortcuts below:
Starting the sanding:
Reflector mounting:
Air intake/cooling:
Lamp adjuster and air outlet:
Polishing and beamshot with the old MSR lamp:
The stand and install of the old lamp:
Picture of the finished light and some beamshots with the old lamp:
Beamshot with the current 350 W UHP lamp:
Installation of the 350 W UHP lamp and Lux readings:
Comparison with my other SA light:
If you are interested in a different type of short arc project, check out my 62 Million Candela 850W 14" Stock pot light
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