Questions tagged [theory]

Use this tag when the question is **primarily** about the underlying ideas behind how something works. This tag should be used in conjunction with another tag for the area of interest, for example [electrical] or [suspension]. It should not be used "stand alone." Please use the [engine-theory] tag for those questions.

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Can a Battery Conductance Test tell the difference between damaged plates and sulfation?

I'm just going to lay out my assumptions, or what I think I know, so that there's a better context for the question. I understand that there are basically four main situations in which a standard ...
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1answer
36 views

Bolt torque estimation based on angle and material

Is there a valid generic formula to roughly estimate a bolt's tightening torque similar to the "tighten by hand until seated, tighten XXX degrees more with your wrench"? I have used for many ...
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1answer
705 views

What are Wheel ticks and Wheel impulses?

I have some Odometry data taken from a Volkswagen Passat which gives the position. This is calculated using wheel ticks and in addition, I also have data which gives me the number of wheel impulses at ...
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0answers
181 views

Why ambient temperature used to measure pressure for car ac system

Since the ac system is located mostly inside a car engine and the car is warmed up prior to adding freon, and the temp/humidity in engine bay is different from ambient temperature//humidity, and all ...
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127 views

Do all cars rust eventually even with repeated proper rustproofing methods?

My understanding is that rustproofing works and lasts when done properly, but once the coating used to rustproof wears off I'm guessing the process to rustproof needs to be done all over again. With ...