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PSI is the unit that compressors measure in when pumping gas. It stands for Pounds Per Square Inch and the number has a direct correlation with the pressure that is applied throughout a pneumatic system. By tubing a compressor with a pressure gauge or manometer, you can keep a constant reading of the PSI value, which is recommended if you want to avoid over-exposure. BAR and PSI are the most common units used in PMI (Pressure Measuring Instruments). 1 PSI is the equivelant of 0.06895 BAR.
PSY be handlin' all that PSI
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Sprockets and Pulleys are commonly used in situations where drive with unaltered properties is needed to be transferred along a fair distance. Instead of using up a ton of idler gears, pulleys are a more viable alternative. That is, if your output doesn’t require much torque. Due to the laws of friction, pulleys are less effective when it comes to transferring significant amounts of torque. Sprocket and chain systems are, however, capable of withholding and transferring much higher amounts of torque due to the way they can be meshed with spurs.
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Differentials are special gears that are essential to just about any vehicle. The compact space inside can fit 3 bevel gears. The outer gear can both proportionately and disproportionately distribute the drive via the inside bevel gears, using a sun and planet concept. This allows for steering to be a much smoother process, so that one axle can rotate faster or slower than the other when neccessary.
Many cars now use a Limited Slip Differential (LSD). An LSD will change the amount of power going to the inside and outside wheel of a vehicle so they match and don’t get out of sync. If this did not happen, the inside wheel would push outward and make cornering difficult.
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Bevel Gears
Bevel gears have teeth that are mounted on a 45 degree angle, allowing them to be meshed to another bevel gear on a 90 degree offset. This is particularly useful for converting rotation from a vertical axis to a horizontal axis or vice-versa.
Worm Gears
Worms gears have an odd shape and look much different to your standard spurs. They are useful for preventing backlash, increasing torque, and they can only ever be used as the driven gear. They can never be on the receiving end.
Helical Gears
Helical Gears are similar to worm gears, in the sense that they allow for perpendicular meshing, due to angled teeth. Unlike the worm gear, they can be both the driver and driven.
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Backlash is the amount of space in between coupled gear teeth, which can result in unintended motion due to the fact that the gears can freely move within this. Generally, smaller gears have a tendency to produce more backlash due to the fact that they have lesser teeth than larger gears. When engineers want to avoid backlash, they use worm gears which are capable of stalling a gear in a particular position without having it move.
Every wondered why if you just accelerate your car with the steering wheel locked in a neutral position, the car slowly veers off to the side? That’s backlash!
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When adding chapters of a book, create an album with the title of the book (the primary artist is the collective name e.g Holy Bible KJV), and add the individual chapters to the album. It should look a little something like below:
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