Re: 7" Headlamp comparison +

["Bruce Blair" <bblair@domain.elided>]

If those Cibies are the old concave type lens (makes me think they are, 
since you mention P45 base bulbs), they were designed before the advent of 
halogen bulbs.   The concave face was supposed to be more self-cleaning 
than the typical convex lamp.

The P45-based halogen bulb was not an approved E-Code bulb in the days that 
I marketed Cibies. They were produced as a way to get more light out of old 
lens assemblies.  The Cibie factory vigorously opposed their use in the 
concave lens lamps, since the placement of the filament in the focal point 
of the parabolic reflector put it too close to the lens glass, and would 
cause heat stress and cracking.  This was the standard 60/55w variety.   If 
there is a lower wattage P45 base bulb available,  it should lessen the 
risk of cracking those expensive lenses.

Bruce Blair
Seattle

AlfaCyberSite wrote:
>For those of you 'still' (as if you had an alternative) using 7"
>headlamps, check this out:
>
>Those interested in a headlamp comparison, including the Vintage Cibie
>lamps with City Lamp, please visit:
>http://www.alfacybersite.com/BRGiuliaHeadlamps.html
>
>For the one of you out there who gives a big RA regarding rear edging on
>Early Spiders, visit:
>http://www.alfacybersite.com/BRGiuliaRearEdging.html
>
>One is somewhat more exciting than the other. I'll leave it up to you.
>
>Thought I'd stuff this in here for you Portlanders: Just picked up a
>sixer of MacTarnahan's BlackWatch Cream Porter. Extremely mellow, Dude.
>
>(Go Big Red on 01/01/02)
>
>Biba
>Irwindale, CA USA
>
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