A view from the driver's seat of my 1948 Oldsmobile, floating along at 50+ mph eastbound on the old Hwy 22. Click to enlarge.There was only one other time that I remember my old Olds in the wet and that was our 1997 trip to Lansing MI and the 100th anniversary of Oldsmobile. Lately though, rain has been the norm around here, so if I wanted to get the car ready for
the Plunkett show this year, a little drizzle must be endured.
"It runs well in the rain." I Googled that expression and there were several thoughts as to why a car might run better in the rain.
Googled Theories:
"The extra humidity/moisture in the air increases it's mass/density. Allows you to pack more air into each cylinder (in a fixed volume)."
"Moist air resists detonation more, so you aren't pulling as much timing out?"
"Humidity makes the jetting richer.if it runs better in the rain it needs richer jetting for the dry." (what ever that means.)
And finally:
"An Increase in water vapor effectively displaces oxygen from a given volume of air, making for a richer mixture."
My theory
I think it might be that there is more soothing road noise so you just don't hear the normal creaks, groans and sputters that a 62 year old makes. (I mean the car of course) This background noise forces you to turn the radio louder so the net effect is the perception of a quieter, smoother running engine.
This picture shows the small viewing area covered by the pathetic, little wipers.
An over half-century gap in technology becomes more obvious as soon as you turn on the inadequate, fragile, little windshield wipers. Since they run off the car's engine vacuum, they slow down to nearly stopping as you accelerate. Also, the steam on the inside of the windows persists in spite of the defroster setting. The irony is Oldsmobile had already had 52 years of building cars when this one was new. You'd have thought they'd had time to figure this out. I noticed too, the horn doesn't work, but I don't know if it has anything to do with the rain. We really have come a long way, but then, this is part of the old car experience.
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