Stop in for a cup of coffee

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Do you know what lamps and bulbs Scott Harvey was refering to in the 1967 Sportscar Graphics rally prep and tips article? Could it be H4 that early?

No. The H4 didn't exist outside of R&D labs until 1969, and then only in Britain. It took a few more years after that to work through the technical approval process for Continental Europe.

Scott Harvey is describing one of the characteristics of the European (now U.N.) low beam light pattern, regardless of what kind of bulb any particular lamp uses: a sharp cutoff line, bright below and dark above, at the top of the beam.

It was a flat, straight-across, symmetrical cutoff for a lot of years, then lighting researchers in the mid-1950s did exhaustive comparisons of U.S. and European lights, to see if maybe the U.S. sealed beam should be adopted in Europe. What they found was that the American low beam gave longer seeing distance down the right side of the road, but also produced more glare than was considered acceptable in Europe with its higher traffic density on narrower roads.

So the industry developed an asymmetrical cutoff: still flat/horizontal on the left side (of each beam), but now slanting upward on the right side (of each beam) to throw more light down the right side of the road while maintaining low glare toward oncoming drivers. The new asymmetrical European beams gave seeing distance roughly equivalent to the American beams, but with the lower glare.

It's kind of pointless to quarrel about beam patterns, though. Both the US and the U.N. headlamp specs allow great headlamps and lousy ones. Also, European practice was (and still is) to aim their headlamps very low, often giving the driver only about a 100-foot preview distance, which is far too short for anything above about 25 mph. American specs call for higher headlamp aim, giving a longer preview but more glare. For seeing distance a European beam aimed a little higher than intended works about the same as an American beam aimed normally, and an American beam aimed a little lower than intended doesn't produce much more glare than a European beam aimed normally.

The crash-avoidance benefit of higher aim/longer seeing distance is much larger than the crash-risk drawback of lower aim/lower glare, so to a fair degree the American approach is scientifically the more correct one, but it's easy to go too far in either direction. It's too bad we humans are wired to behave as we do; we get dug in on our opinions and they harden into beliefs, which then become something akin to a religion and then both sides are damn sure they're right and the other side's wrong and progress slows to a crawl or grinds to a halt.

For most of a century the Americans have been swearing up and down they're right and the stupid Europeans (and more recently, the stupid rest of the world) is wrong, while the Europeans have been insisting they're right and the stupid Americans are wrong. Here's the fun(?) part: despite many decades of study all over the world, and despite the clear, significant differences between U.S. and European headlamp light distributions (historically -- not as much now), nobody ever showed an actual safety difference between the two types in terms of crash avoidance or involvement. That's because low beams, by their nature, are not adequate to the task we ask of them, to light our way safely at the speeds we actually drive. The best low beams, aimed perfectly, are good for going maybe 45 mph safely. Most of us don't have anything like the best low beams or perfect aim of the low beams we do have.

The solution exists now. It's called "Adaptive Driving Beam" (ADB) or "Glare-Free High Beam". It's a camera- and computer-driven system that tracks other people on the road in front of you and dynamically shadows them out of what is otherwise a full-time high beam. The equipped driver has high-beam seeing, while everyone looking at the car sees, at most, only low-beam glare. It's been on the road for years, giving drivers about a hundred more feet of extra seeing distance with no extra glare in a growing number of models in Europe, Japan, Australia…even Canada (whose regs are usually kept in lockstep with the US rules) got tired of waiting for the American Government and went ahead and said yes on their own.

But it's still not approved in the States. This isn't likely to be fixed any time soon; the American Government in its present form doesn't like any/all regulation, even though a reg doesn't necessarily say "No, you can't"; some of them say "Yes, go ahead". American lighting suppliers have systems developed and on the shelf, just waiting for the U.S. regs to change, but the progress from the relevant agency (NHTSA) has been slow and not very thoughtful. Their latest proposal technically amounted to "OK, automakers, you can put ADB on your cars, as long as it works just like today's ordinary headlamps". The whole industry and safety-research community howled in protest, and NHTSA is now, at least nominally, thinking about what to do next.

Don't nobody hold no breath. :-(
 
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Clearing out and closing down the 3-generation family home my grandparents put up 70 years ago. The developer's bulldozers come for it in 20 days. It is a death in the family, an uphill slog of sadness, grief, and trauma.

You asked.

Dan, I am sorry to hear about your struggles. Seems like it happens to all of us sooner or later in life one way or another, no matter what kind of shoes we are wearing.
 
Hello, who is around this place.
Im around. In and out. Sleep, wake up, sleep.
The lotsa walking is getting to me, this is only day one of sema.

time change and travelling a couple hours west, im 3 hours off.
 
70’s. its nice. A little cool in the morning. Of course i wake up at 3:00. Try and sleep til 7 but not working.
 
Hello, who is around this place.
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My feet are hammered, I did so much walking today. That soft flat thing you sleep on is sounding really appealing right now.

I am watching YouTube videos and the longer I sit, the harder it's getting to get up.
 
My feet are hammered, I did so much walking today. That soft flat thing you sleep on is sounding really appealing right now.

I am watching YouTube videos and the longer I sit, the harder it's getting to get up.
I was watching vids on laminate floor installation. Going to do several rooms for someone. I've done some before. But the stuff I did had to be cut with a saw. The product they got can be scored with a knife and snapped. So only fitted pieces need cut with a jig saw. Should save a lot of time not going back and forth to saw making cuts.
Bout time for some snoozing here too.
 
So I kind of got the Luke warm go ahead to start on my mini shop from the wife. But she wants to hold off having electric installed until spring :BangHead:
 
Man what can you say right?
Still a win. Been trying to talk her into this for 6 years. I mean it’s just a storage shed with a mini workshop, it will be a 12x28L. Modular and moveable. Just long enough to where I could store a car in it if I wanted.

I won a trailer load of building materials 6 years ago at auction for 1.00. No one else wanted it so I told the auctioneer I’d give him a dollar for it. It’s enough lumber to cover this and more than enough sheet metal. So no money out of pocket
 
Yesterday drove me nuts looking for a sharp 1/2 drill bit. Have a draw full of bits and just about all of them need sharpening. Have to break out the Foley machine in the near future if I can get to it! Prob do all the stuff I need to do, Clippers, scissors etc. Have to love that old machine. 1055 model have all the attachments for it also. Score at a hardware store that was closing down.

same one as this
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Yesterday drove me nuts looking for a sharp 1/2 drill bit. Have a draw full of bits and just about all of them need sharpening. Have to break out the Foley machine in the near future if I can get to it! Prob do all the stuff I need to do, Clippers, scissors etc. Have to love that old machine. 1055 model have all the attachments for it also. Score at a hardware store that was closing down.
My grandfather sharpens then with a file, about 30-60 seconds per.
 
I used to do them on a grinding wheel before I got that machine. Once it is set up ten seconds each and done with a diamond plate they last a while for sure. Just have to basically get 4-5 hours to do everything, been a while. Have a few chain saw chains also that can use a touch up.
 
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