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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

On Location: 2015 Nissan Micra Cup racecar at Mont-Tremblant

Circuit Mont-Tremblant has an almost mythical aura for North American road racers, and it was the setting for our high speed test of the 2015 Nissan Micra Cup racecar. Nestled in the Laurentian Mountains of Quebec, the course hosted Formula One races in 1968 and 1970, Trans-Am and Can-Am competition in the 1960s and '70s, and more recently a Champ Car event in 2007. In its current configuration, Mont-Tremblant has 15 turns and covers 2.65 miles of rural Quebec about 90 minutes northwest of Montreal. Put simply: It's an excellent venue to test the Micra Cup racer, which is underpinning a spec series in Canada this summer and fall. The cars are outfitted with a Nismo suspension kit, FIA-approved racing seat with a five-point harness, safety cage, upgraded brakes, modified exhaust, and Pirelli low-profile performance tires. The stock 1.6-liter four-cylinder engine with 109 horsepower mated to a five-speed manual is unchanged. It's a cool, misty day when we get behind the wheel of the Micra Cup car. Though we're nervous, Nissan is billing the Micra Cup as a series for nearly anyone, calling it the bridge between karting and more serious racing. We believe that – the Cup car is fairly easy to drive – and our instructor is helpful with tips on the gearing and setting up corners. We finish our laps feeling excited, challenged, and wanting more. As the video above shows, the car is eager to please, and it's a lot of fun to toss around an iconic track.

2018 Honda Accord charges into slumping sedan market

DETROIT - Honda on Friday revealed its newest-generation Accord, one of four re-engineered midsize sedans that Asian automakers are betting on to win market share as Detroit automakers shift focus to SUVs, crossovers, and pickup trucks. The new Accord, like rival Toyota's all-new Camry arriving this month, offers major improvements in fuel economy, technology, styling and safety. Honda declined to discuss details ahead of Friday's event in Detroit. The Accord and Camry are pillars of their manufacturers' US businesses, each selling well over 300,000 vehicles a year. In the coming months, Nissan is expected to launch a new Altima midsize sedan, and Hyundai will launch a new Sonata. Both are popular marques that will be promoted heavily. "There has been no new news on the midsize sedan side for three years, and we think this is a great opportunity to bring attention back to the segment," said Jack Hollis, Toyota's head of marketing for North America. Year to date, US passenger car sales are down 11.4 percent, and sales of midsize sedans are down 14.2 percent. Still, Americans bought 7.1 million sedans in 2016. With General Motors and Ford cutting sedan production, and Fiat Chrysler Automobiles abandoning the segment, Honda and its Asian rivals could boost sales with updated models, dealers said. "They could take share from other brands, which is traditionally what happens when a new product is launched," said Pete DeLongchamps, vice president for manufacturer relations at Group 1 Automotive Inc, the third-largest US auto dealer group. "NOT FINDING A PLACE WITH CONSUMERS" The Accord for years was Honda's top-selling model in the United States. Within the past year, US sales of the Honda CR-V have eclipsed the aging Accord, and Honda has expanded production capacity for the compact crossover. Passenger-car sales have steadily declined since 2012, when they made up 51.2 percent of the US market. Sedans have sagged to a 38.1 percent share in the first half of this year. IHS Markit said US consumer loyalty to SUVs and pickup trucks has risen since 2012, but declined for sedans. The new Accord and Camry "may stem the decline," said IHS Markit's Tom Libby. "I don't think they will cause a marked reverse." Improvements to the Accord should boost sales at Galpin Honda in San Fernando, California, general manager Ed Hartoonian said.