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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Porsche 911 GT3 wows the crowds in Geneva

Porsche has a long and storied history of taking its range-topping 911 sportscar racing, with an enviable record of achievements in tow. The latest machine with which the automaker will take to the track can be seen above: the fifth-generation 2014 911 GT3.
With 475 horsepower strumming through the 3.8-liter six-cylinder boxer engine, this is the pinnacle of naturally aspirated performance from Porsche. It can go from 0 to 60 in just 3.3 seconds, hit a top speed of 195 miles per hour and has lapped the Nürburgring Nordschleife in less than seven and a half minutes.
A dual-clutch PDK transmission (no standard manual gearbox will be offered) with shorter gearing than lesser 911 models sends power to the rear wheels. Providing forward motion isn't the only thing those rear wheels will be doing - Porsche says the 2014 911 GT3 is fitted with the manufacturer's first active rear-wheel steering.

Recharge Wrap-up: Porsche buys stake in carbon fiber partsmaker, Formula E runs on solar

The US Department of Energy is providing $35 million in new funding for fuel cell and hydrogen technologies. The money will fund projects to advance technology and speed up adoption of fuel cell applications like light-duty vehicles. Categories for possible projects include deployment of fuel-cell electric hybrid vehicles, mobile refueling and one called "Crosscutting: America's Climate Communities of Excellence." Other possible projects include research and development for hydrogen production, delivery and fuel cell manufacturing. Read more from the DOE. Porsche will buy a 25.1-percent stake in carbon fiber parts manufacturer Capricorn Composite GmbH. Capricorn has provided parts for Porsche's LMP1 racecar and 918 Spyder. The deal will give the automaker better access to the lightweight material going forward, and will "build on joint work over many years in the motor-sports industry and secure the future," according to Porsche. Porsche's parent company Volkswagen owns almost 10 percent of Capricorn's competitor SGL Carbon SE, but an expansion of that ownership could be thwarted by BMW, which controls more of SGL's stock. Read more at Bloomberg. The electric racecars running in the Formula E Miami ePrix will use solar energy. Florida Power & Light (FPL) will provide the electricity the cars will be using for the race on March 14, and its Martin Next Generation Solar Energy Center provided the electricity the cars used during the announcement event. "Our partnership with Formula E and the Miami ePrix is another example of our commitment to advancing zero-emissions solar energy and the use of electric vehicles in Florida," says FPL President and CEO Eric Silagy. FPL currently operates two other solar plants, with plans to install 1 million solar panels at three more power plants by the end of next year. Read more at Domestic Fuel. Featured Gallery 2015 Porsche 918 Spyder: First Drive View 51 Photos Related Gallery 2015 Formula E Buenos Aires ePrix View 28 Photos News Source: DOE, Bloomberg, Domestic FuelImage Credit: Porsche Government/Legal Green Motorsports Porsche Alternative Fuels Electric Hydrogen Cars recharge wrapup