Raw materials such as coke, iron ore, dolomite and limestone are put into a blast furnace and treated with hot gases while in their molten form. The molten state of iron is pre-treated and converted into steel. The chemical composition … Continue reading →

For a 9 meter height engine, the cast iron parts of the engine would be compressed from 0.5 – 0.75 mm by tightening the tie bolts. The tie rods are pre-stressed at assembly, so that the engine structure is under … Continue reading →

Some greases have a NLGI certification mark. For example, a designation of LB means that the grease is suitable for use as a chassis lubricant and a GC-LB designation means that the grease is suitable for use in wheel bearings … Continue reading →

To complete this simple job, just drop the inserts into the stake pockets and fasten the bolts into place without fully tightening. Remove the top bolts and move the rack into place on the truck bed, then lightly screw the … Continue reading →

Ship’s bells are a system to indicate the hour by means of bells. This system is widely used aboard ships to regulate the sailor’s duty-watches. Unlike civil clock bells, the strikes of the bell do not accord to the number … Continue reading →

Earrings were also worn for superstitious reasons. Some pirates were convinced that wearing an earring would improve or even cure bad eyesight, as they believed that the precious metals in an earring possessed magical healing powers. Another tale was that … Continue reading →

Railings are used on stairs, balconies, galleries, decks, ramps, walkways and so on as a means of providing separation, support and safety. Railings can be made from a very wide range of materials: Wrought or cast iron. Stainless steel. What … Continue reading →

What its function is. Auto pilot, it will stay on whatever heading its pointed at and run itself on that heading even in the wind, no need for your foot on the pedal all the time like the old days. … Continue reading →

The bearing housing and pin bores are measured with a Sunnen AG-300 precision gauge or dial bore gauge for size and out-of-round. Center-to-center distance can be measured with a vernier caliper. The center-to-center distance between the large and small ends … Continue reading →

Black powder provided the destructive force for cannonballs and artillery shells. The combination of sulfur, potassium nitrate and finely ground charcoal requires a high temperature – 572 degrees Fahrenheit – and friction to ignite. White estimated he had worked on … Continue reading →

Originally Answered: How did old ships sail without wind? They use oars (although without sails being used, could they be called sailing?). They use oars (although without sails being used, could they be called sailing?). They didn’t sail, they were … Continue reading →

The only active ship in the United States Navy to sink another enemy ship in combat is more than 200 years old. The title falls to the wooden frigate Constitution, as the USS Simpson, a guided missile frigate just thirty … Continue reading →

The maximum stress refers to the maximum tensile stress while the minimum stress refers to the minimum compressive stress. The stress range was taken as the absolute difference between the maximum and minimum stress. What does maximum stress mean? Ultimate … Continue reading →

Poop Knife: A blade for slicing human feces. Do people actually use a poop knife? It doesn’t matter who we are, we all poop but some of us need a little bit more help than others. For those who tend … Continue reading →

The radius is 18 feet. The distance around a circle is called the circumference. Example Problem Find the diameter of the circle. d = 2r d = 2(7) d = 14 The diameter is two times the radius, or 2r. … Continue reading →