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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

FCA-Renault revival may hinge on willingness to cut Nissan stake

Fiat Chrysler Automobiles and Renault are looking for ways to resuscitate their collapsed merger plan and secure the approval of the French carmaker's alliance partner Nissan, according to several sources close to the companies. Nissan is poised to urge Renault to significantly reduce its 43.4% stake in the Japanese company in return for supporting a FCA-Renault tie-up, two people with knowledge of its thinking also told Reuters. It is still far from clear whether any concerted effort to revive the complex and politically fraught deal can succeed. FCA Chairman John Elkann abruptly withdrew his $35 billion merger offer in the early hours of June 6 after the French government, Renault's biggest shareholder, blocked a vote by its board and demanded more time to win Nissan's backing. Nissan representatives had said they would abstain. The failure, which FCA and Renault blamed squarely on the French government, deprived both companies of an opportunity to create the world's third-biggest carmaker with 5 billion euros ($5.6 billion) in promised annual synergies. It also shone a harsh light on Renault's relations with Nissan, which have gone from frayed to fried since the November arrest of former alliance Chairman Carlos Ghosn, now awaiting trial in Japan on financial misconduct charges he denies. REVIVAL TALKS Italian-American FCA — whose brand stable encompasses Fiat runabouts, Jeep SUVs, RAM pickups, Alfa Romeo luxury cars and Maserati sports cars — has so far turned a deaf ear to suggestions by French officials that its merger proposal could be revisited. But since the breakdown, Elkann and his French counterpart Jean-Dominique Senard have had talks about reviving the plan that left the Renault chairman and his Chief Executive Thierry Bollore upbeat about that prospect, three alliance sources said. Renault and a spokesman for FCA declined to comment. One of Elkann's senior advisors on the Renault merger bid, Toby Myerson, was expected at Nissan headquarters in Yokohama on Monday for exploratory discussions with top management, two people with knowledge of the matter said. Nissan CEO Hiroto Saikawa is likely to attend. Myerson did not respond to a message from Reuters seeking comment. The meeting comes amid mounting strains that may preclude compromise, after Senard warned Saikawa that Renault was prepared to block key Nissan governance reforms in a dispute over board committees.

2020 Kia Soul vs. subcompact crossovers: How they compare on paper

At 10 years old, the 2020 Kia Soul has entered its third, and potentially best, generation yet. To get here, it fought off other boxy hatchbacks such as the Scion xB and Nissan Cube. But now it faces all new competition: subcompact crossovers. They offer similar sizes, prices and flexibility as the Soul, but with a veneer of ruggedness. But the Soul is ready with its own rugged trim, the X-Line, plus the return of its powerful turbocharged variant. To see how the Soul stacks up to the fresh competition, we've compiled vital stats on all the tall hatches. Considering the prodigious size of the subcompact crossover segment, we've limited our selection to a few options that are similarly priced and sized to the Soul, and that offer a bit of funky styling. They include the Toyota C-HR, Nissan Kicks, Hyundai Kona and Honda HR-V. There are of course many more options, and you can create your own comparisons using our Compare Cars feature. (You can also check out our Mitsubishi Eclipse Cross comparison that includes a few larger choices). In the meantime, though, check out all the numbers on our selected vehicles in the chart below, followed by analysis after. Performance, fuel economy and drivetrains The crossover segment is diverse when it comes to powertrains, with all different displacements, induction systems and drive wheels. A surprising number of these supposedly rugged and off-road-oriented vehicles (at least more than normal cars) are front-drive only. These include the Nissan Kicks, Toyota C-HR and Kia Soul. But the Kona and HR-V offer all-wheel drive, with the Hyundai offering it on both engine options. Speaking of engine options, only the Kia and Hyundai have two possibilities, either a base 2.0-liter naturally aspirated engine, or a turbocharged 1.6-liter engine. The base engines have identical outputs of 147 horsepower and 132 pound-feet of torque, but the turbo engines differ. The Soul has 201 horsepower to the Hyundai's 175, but both make the same 195 pound-feet of torque. The Kicks, C-HR and HR-V all offer just one engine option, and they're all naturally aspirated. The Nissan's engine is the smallest and least powerful: a 1.6-liter engine making 125 horsepower and 115 pound-feet of torque. The HR-V is next with a 1.8-liter engine making 141 horsepower and 127 pound-feet of torque. The C-HR rounds out the trio at 144 horsepower and 139 pound-feet of torque from a 2.0-liter engine.