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Basic Continuously Variable Transmission explained with Legos

In recent years, the search for better fuel efficiency and smoother shifting has produced automatic transmissions with double-digit gears. Alternatively, the same quest has boosted the popularity and usage of a different type of automatic transmission without any fixed gears, the continuously variable transmission, or CVT. YouTuber Sariel's Lego Workshop recently took the time to build a CVT demonstration model out of Legos to help explain how they work. Sariel begins by showing the model's input and output shafts that are parallel to each other. Each shaft has a cone attached to it, and they are inversely placed so that the large part of one cone is next to the small part of the other cone. The two cones are connected using a rounded rubber band.  By shifting the rubber band up and down the cones, the machine changes the effective ratio between the cones. So, a 1:4 ratio can be smoothly transitioned to 4:1. No clutch is required to operate the mechanism, and it eliminates hitches or pauses between gear changes. CVTs are also advantageous over 9- or 10-speed automatics in that they are far less complex and weigh less.  To demonstrate how the CVT operates in a vehicle, Sariel used a joke about Top Gear. The original Top Gear is represented by a faster-moving car that has the rubber band around the large part of the cone on the input shaft. Top Gear without former hosts Richard Hammond, Jeremy Clarkson, and James May is represented by a slow-moving car with the rubber band around the large part of the cone on the output shaft.  For an even more detailed explanation of how CVTs work — albeit one that doesn't involve toys — you can click here. Technology Toys/Games Nissan Subaru

Daimler and Nissan to build luxury cars at new plant in Mexico

A few years back, when Daimler was looking for a partner to spread the cost of development of small cars, it agreed to collaborate with Nissan on future products, such as vehicle platforms and drivetrains. The latest development in the collaboration concerns the assembly of small luxury cars for Infiniti and Mercedes-Benz at a Nissan plant in Mexico, two unnamed sources told Reuters.
The plant in question, Aguascalientes, is a $2 billion project that will open later this year next to an existing Nissan factory. The upcoming Infiniti Q30 four-door hatchback is expected to be built there, possibly alongside the Mercedes GLA-Class, which is one of several candidates Mercedes is considering to build at this facility, Reuters reports. The GLA will debut at the Frankfurt Motor Show this month, and initial production of the model will take place in Germany. The Q30 could follow a similar path, with assembly starting at Nissan's Sunderland plant in the UK, and then expanding to Aguascalientes later on.
The underlying platform of the Q30 and GLA, codenamed New Generation Compact Car (NGCC), was developed by Daimler. The Q30 would be the first Infiniti produced under the automakers' agreement. Last year, Nissan agreed to make engines that would find their way into Mercedes and Infiniti vehicles.

Nissan Juke facelift teased before Geneva

Nissan's funky Juke mini-CUV is set to get a refresh at next week's Geneva Motor Show. If you're thinking that the Japanese automaker will take the opportunity to scale-back some of the crossover's polarizing exterior, think again: Nissan claims the new vehicle will feature an "even more striking design." And with stronger-than-expected sales worldwide for the model, we don't see the company's designers capitulating with a meek-faced mid-life update.
For now, the only look we have of this "striking design" is the teaser image shown up top (go ahead and click on it for a closer look). Nissan is also promising improvements in efficiency and refinement, although what that means for the Juke's fun-to-drive character is unclear.
Because we live in an age dominated by social media, the new Juke will perform a slow striptease on a variety of social networks, according to Nissan. It won't be a full reveal, but there should be some clues as to what the CUV's overall look will evolve into, before it's shown in all its glory in Geneva.