Recent content by -Virgil-

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    Why are headlamps made of plastic instead of glass?

    Until the late 1970s, when GE (with their in-house plastic and chemicals division) began playing around with plastic sealed beams. This was actually a good idea. A sealed beam is intended as a finite-life, throw-away item, so it likely would burn out before much lens deterioration. And the...
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    Why are headlamps made of plastic instead of glass?

    Yes. It was the other way around; plastic lenses created this problem. Impact resistance and lower weight were things Ford, on behalf of GE Plastics, harped on as "consumer benefits" when they convinced NHTSA to create this crappy mess we now live with. Lower cost and shorter headlamp life...
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    Anti collision strobe

    What do your local laws and regulations have to say about this "anti-collision strobe"?
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    2011 Chevy Silverado H11 bulb replacement/upgrade

    No. Correct, they are complete trash...like all others of this product category.
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    XtremeVision vs RacingVision 🤔

    The luminous flux data from that set of tests was not released for publication. It's not really very important, either; any legitimate H4 is going to produce 1650/1000 lumens, +/- 15%, at 13.2 volts. Aside from the nerdy desire to know (which I will completely admit to sharing!), luminous flux...
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    Hella 90mm Bi-Halogen Hi/Lo, how do they rate?

    That is correct; the Koito (is how the name is spelled) H4 headlamps are significantly superior to the Cibies. There's more light within the beam, the light distributions are smoother and they have better formation -- the hot spot is located closer to the axis for longer seeing distance on low...
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    XtremeVision vs RacingVision 🤔

    Good idea, that thread is now a sticky. The XP in those tests was a +80, the gen1 XP.
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    XtremeVision vs RacingVision 🤔

    It's difficult to squeeze any good juice out of this bag of apples. The first two links appear to be the same product marketed differently in two countries. The "X-tremeVision G-force" link has pictures showing two very different amounts, depths, and patterns of blue tint on the glass. And that...
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    Hella 90mm Bi-Halogen Hi/Lo, how do they rate?

    Overall the 90mm Bi-Halogen is definitely better than the Cibie 7" H4, standard bulbs all around.
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    Hella 90mm Bi-Halogen Hi/Lo, how do they rate?

    The Hella 90mm Bi-Halogen isn't a bad lamp, but it's also not a great lamp. I like the ECE version (with Stern's 65-watt H7 bulb) better than the DOT version. The Cibie 7" H4 stopped being recommendable some time back, and then stopped being made. If you're looking for a 7" round headlamp, there...
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    A PSA About LED Retrofits

    Let's leave those goalposts where you first put them: you called government-mandated auto equipment unnecessary. I gave a quick rundown of auto equipment that is present because of government mandate. No, we don't. That's not a fact, it's an opinion. It isn't a very thoughtful one, either...
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    A PSA About LED Retrofits

    So any part that's there by government mandate is unnecessary? OK, let's delete those items off the car. Emissions controls. Every single one of them is there by government mandate, so obviously unnecessary. We're going back to the chunky-style toxic air of the 1960s, only it will be much worse...
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    A PSA About LED Retrofits

    We're going to need visible-light headlamps for the foreseeable future.
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    A PSA About LED Retrofits

    Real, fully self-driving L5 cars (1) are a lot more than five years from "prime time", and (2) will still need headlamps for the cameras.
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    A PSA About LED Retrofits

    It's fine to say 1955-1970 cars are your favorites, because everyone's entitled to their own opinion. But "The best cars were made from 1955 to 1970" is so completely, objectively false -- by just about every measure -- that the claim cannot be taken seriously. You appear to have decided you...
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