Footwear impression marks { the mark made by the outside surface of the sole of a shoe (the. outsole) { are distinctive patterns often found at crime scenes. They are among the most. commonly found evidence at crime scenes and present more frequently than ngerprints.
Start with a two-gear train. To be able to determine a gear ratio, you must have at least two gears attached to each other â this is called a gear train.. Usually, the first gear is a drive gear attached to the motor shaft and the second is a driven gear attached to the load shaft.. Divide the teeth numbers of the drive and driven gears. The important thing to remember when dealing with gear trains with more than two gears is that only the driver and driven gears (usually the first and last ones) matter. In other words, the idler gears don't affect the gear ratio of the overall train at all.
You might also want to know the potential speed for a particular ring gear and pinion ratio or the potential speed for a given set of driveline equipment specifications. In our calculator, we are dividing the number of teeth on the pinion gear by the number of teeth on the ring gear.There are also several ways to determine the ratio manually even if you can't see the number of teeth on the ring gear or pinion.urn the tire 10 revolutions and also count the number of revolutions of the driveshaft. As a hypothetical value, if you make 20 turns of the tire and the driveshaft turns 36 times, the number of crankshaft turns divided by 1/2 of the tire turns (10) equals the approximate ring gear and pinion ratio, 3.6 in this case.