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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.

GM and Isuzu to partner for medium-duty commercial truck

General Motors is returning to the medium-duty truck business in the US for the first time since 2009 thanks to a new deal with longtime-partner Isuzu. The arrangement brings the Isuzu N-series models to Chevrolet dealers with the Bowtie's branding on them in 2016. There are six medium-duty Chevy models arriving at dealers in regular cab and crew cab bodies: the 3500, 3500HD, 4500, 4500HD, 5500, and 5500HD. The trucks will be sold as a bare chassis for buyers to outfit to their needs. Depending on model, customers will have the choice of an Isuzu-sourced 3.0-liter and 5.2-liter diesel engines or a 6.0-liter V8 gasoline-fueled engine from GM and six-speed gearbox. According to company spokesperson Bob Wheeler to Autoblog, the diesel models will be built in Japan and the rest assembled from knockdown kits in Charlotte, MI. This kind of vehicle sharing isn't uncommon for GM in the commercial segment, and it already partners with Nissan to use the Japanese brand's NV200 as the City Express van. The General also once owned a significant stake in Isuzu, and the two have remained collaborators even since then. Isuzu and GM Enter Commercial Vehicle Collaboration Agreement in the U.S. 2015-06-15 DETROIT and FUJISAWA, Japan – General Motors Co. (NYSE: GM) and Isuzu Motors (TSE 7202) have reached an agreement on a U.S. commercial vehicle collaboration, allowing Isuzu to strengthen its product lineup and GM to expand its commercial vehicle portfolio. Isuzu will produce low cab forward models for GM, based off of the Isuzu N-Series. The vehicles will be distributed by participating Chevrolet dealers in the U.S. market starting in 2016. To strengthen the product lineup, GM and Isuzu will explore the use of GM commercial vehicle components for Isuzu low cab forward trucks and GM will continue to produce and supply the 6.0L V-8 gas engine and six-speed transmission for Isuzu gasoline-powered low cab forward trucks. Isuzu and GM have maintained a strategic partnership for more than 40 years, producing collaborative business opportunities throughout the world. This agreement continues that tradition and reinforces a long-term relationship that helps to explore future collaborations in the U.S. commercial vehicle business. About General Motors General Motors Co. (NYSE:GM, TSX: GMM) and its partners produce vehicles in 30 countries, and the company has leadership positions in the world's largest and fastest-growing automotive markets.

Chevy Silverado Special Ops will go into limited production

Remember the Special Ops edition Silverado? Chevy showcased it as a show truck at SEMA last month. And now it's going into limited production, and proceeds will support the National Navy SEAL Museum. The special pickup was based on a Silverado 1500 in Z71 spec and done up with a special three-tone paint job inspired by the camouflage used on 20th-century warships. Known as Razzle Dazzle, the camo was designed to disguise a ship's form and movements from enemy vessels. Chevy also fitted the show truck with a sport bar, off-road LEDs, lower- and under-body reinforcement, and flared wheel arches packing special 20-inch wheels. Following its debut at SEMA, former GM chairman Dan Akerson (a US Naval Academy alum) and retired Navy SEAL Master Chief Rick Kaiser presented the concept truck at the 116th Army-Navy football game this past weekend. Chevy hasn't said just how many it will build and at what price, but production is slated to be "limited," going on sale in the spring. Related Video: Chevrolet Salutes Special Forces During Army-Navy Game 2015-12-10 - Special Operations Silverado will support National Navy SEAL Museum - Partners with the USX Mt. Everest Team to raise Post Traumatic Stress Disorder awareness - GM Military Discount expands to include all veterans PHILADELPHIA – For the sixth consecutive year, Chevrolet is the official vehicle sponsor of Saturday's Army-Navy Game. During the game, Chevrolet will honor military service men and women, particularly its special forces. Former General Motors Chairman and CEO Dan Akerson, a U.S. Naval Academy graduate, will join retired U.S. Navy SEAL Master Chief Rick Kaiser, executive director of the National Navy SEAL Museum, to salute the special forces during the presentation of a Chevy Silverado Special Ops Concept vehicle at the game. The limited production version is expected to go on sale next spring. Chevrolet will donate a portion of the proceeds from each Special Operations Silverado sold to benefit the Navy SEAL Museum. "The partnership will also help us aid the families of fallen, injured and active duty Navy SEALs through the efforts of our Trident House and scholarship programs," said Kaiser. Founded in 1985, the museum honors the service and legacy of the U.S. Navy SEALs. Located in Ft. Pierce, Fla., the museum and memorial are recognized as the birthplace of the Navy SEALs.