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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

2014 Subaru Forester XT

Hitting The Mainstream Sweet Spot
The Forester does quite a bit of heavy lifting for Subaru. What was once a plucky little all-wheel-drive utility box has matured into a competitive crossover that accounts for a quarter of the company's total sales in the US. With those numbers continuing to swell even in the third generation's twilight hours, engineers and designers found themselves in the unenviable position of being asked to fix what ain't broke. Rather than reinvent the company's workhorse from the ground up, as we say in our first look at the CUV, Subaru honed the Forester to offer better fuel efficiency, more usable space and a more refined drive.
In doing so, the automaker hopes to toe that delicate line between luring in new devotees to the cult of Pleiades and keeping the brand's longtime fans smiling. While the fourth-generation Forester may have lost some of its trademark pluckiness in the pursuit of a more mainstream existence, there's no denying this is a more sorted vehicle than its predecessors. Make no mistake, the 2014 Forester is keen to carve out a larger chunk of the ever-plumping CUV market for itself, and for the first time in its history, it has the muscle to do so.

2015 Subaru WRX STI goes for the gold [w/video]

If the all-new 2015 Subaru WRX has taken a good thing and made it great, then this should be, well, greater. Meet the range-topping WRX STI, packing more power, a decidedly more aggressive suspension tune, beefier looks, a giant wing and (woo!) gold wheels.
Those spiffy BBS wheels and WRC rally-ready matching WR Blue paint won't necessarily be around forever, though - Subaru is offering this package (along with unique interior trim) on the STI Launch Edition, limited to just 1,000 units. And cool as it may look, there's far more to love about the new STI package.
Power comes from a 2.5-liter turbocharged boxer four-cylinder engine, sending 305 horsepower and 290 pound-feet of torque to all four wheels via a six-speed manual transmission. (Launch Edition models even get a short-throw shift kit, which will likely be available as a dealer-installed accessory thereafter). Unlike the standard WRX, a do-it-yourself 'box will be the only transmission available. Subaru is employing its new - *ahem* - Multi-Mode Driver Controlled Center Differential version of the Symmetrical All-Wheel Drive, which, in addition to a standard 41/59 torque split, uses things like torque vectoring, and, when put in manual mode, allows the driver to select one of six center differential locking levels. In other words, the STI should be incredibly sharp on the road - sharper than ever before.