The Chebyshev linkage is a mechanical linkage that converts rotational motion to approximate straight-line motion. It was invented by the nineteenth-century mathematician Pafnuty Chebyshev, who studied theoretical problems in kinematic mechanisms. One of the problems was the construction of a linkage that converts a rotary motion into an approximate straight-line motion. This was also studied by James Watt in his improvements to the steam engine. Van helsing, CC BY-SA 3.0 http://creativecommons....

Completed Gearbox Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7

I think everyone, when was a child, played tug-of-war. Maybe that’s why you will understand how funny it is to watch Lego cars, which try to decide: what’s cooler - tracks or tires. The first test showed us that car with small tires will lose track. For me, it was expected. But if we change small tires to bigger ones, the chances of this will be equal to cars. Though the second experiment showed that I was wrong and tracks were still stronger than tires....

One of the most popular products for the last year was sanitizer. It doesn’t need water, like soap, and it can be used everywhere. But we should remember that we are humans and we are sooo lazy. Maybe that’s why Lego Sanitizer Robot Auto Dispenser could get a lot of “likes” in our Lazy-World. And this way to clean your hands is safer for people’s health. You of course guessed that our engineers made this robot out of Legos....

Mars Rover - difficult construction, needing checking and patience. It doesn’t depend on size, because the same action needs even a Mars Rover that was built of Legos. Let’s look at the new tests for Mars Rover by Dr. Engine! First, let’s discover how Mars Rover will overcome a barrier that was made of two columns of wooden board. In my view, this test wasn’t hard, that’s the reason why we should make it harder....

Let’s talk about snails. Or, if you want, about the slowest Lego car. Well, don’t waste time! This experiment involved a Lego car that was built by an engineer and a reduction gearbox with different gear ratios. We will detect time during each track. First track: The gear ratio is 8:1 and the time to finish is just 4 seconds. Second track: Gear ratio 192:1 and the car was moving so slow - until 96 seconds....

You’ve probably heard about NASA inventions, which help colonize and discover Mars. However, have you ever seen the same machines, but made of Lego’s details? Let’s look at them! First, try a flight of construction with a propeller, but without a powerful engine, isn’t it fantastic? Unfortunately, yes. Although the propeller works, it’s still cool. The next construction moves on 6 wheels and has on its “face” something that reminds me of a smile....