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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.

Recharge Wrap-up: Renault-Nissan at COP22, BMW launches Cruise e-Bike

The Renault-Nissan Alliance has been chosen to provide a fleet of electric cars for the UN's COP22 Climate Conference in Marrakesh, Morocco. The group will provide 50 passenger EVs – the Renault Zoe, Nissan Leaf, and Nissan e-NV200 – to shuttle delegates to and from conference venues. The Alliance will also provide more than 20 charging stations to support the shuttle fleet. The group provided electric shuttles for the historic COP21 summit in Paris last year. Read more from Renault-Nissan. FCA, Iveco, and gas grid company Snam have signed an agreement to boost natural gas as a cleaner alternative fuel for Italy. Under the Memorandum of Understanding, FCA and Iveco will work together to develop CNG vehicles, while Snam will invest in CNG supply facilities like filling stations to support a growing fleet. Italy leads Europe in the amount of natural gas consumed for transport, with 1 million vehicles currently on the road. Read more at Green Car Congress. LG Chem has officially announced it will build a battery plant in Poland to the tune of about $340 million. Located near Wroclaw in southwestern Poland, the plant is expected to produce 100,000 batteries a year for 200-mile EVs beginning in 2019. The plant could help Poland in its goal to reduce pollution by introducing a million EVs on its roads by 2025. "We will turn the Poland EV battery plant into a mecca of battery production for electric vehicles around the world," says UB Lee, President of LG Chem's Energy Solution Company. Construction begins in the second half of 2017. Read more from Automotive News Europe. BMW has introduced the Cruise e-Bike. Its Bosch Performance Line electric motor provides electric assistance at speeds of up to 15 mph. The battery can be either be removed or remain on the bike for charging, which takes 3.5 hours for a full charge. "BMW aims to be the leading provider of premium mobility services, and our bicycle collection furthers that mission," says BMW Accessory and Lifestyle Manager Eric Riehle. "As we enter the holiday season, these bikes make the perfect present for those wishing for their first BMW." The BMW Cruise e-Bike costs $3,430. Read more from BMW.

Nissan Truck-a-Palooza | Autoblog Podcast #483

Episode #483 of the Autoblog Podcast is here. This week, Dan Roth, Alex Kierstein, and Michael Austin talk about the jam-packed Autoblog Garage, Alex Kierstein's time with several new Nissan trucks including the 2017 Armada, and we wrap it up trying to spend your money. Check it out! Check out the rundown with times for topics, and thanks for listening! Autoblog Podcast #483 The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics 2017 Nissan Armada In The Autoblog Garage 2016 Audi R8 V10 Plus 2016 Jaguar XJR 2016 Jaguar XE Diesel 2016 Jaguar F-Pace 2016 Chevrolet Cruze Premier 2016 Kia Sedona SXL 2017 Mitsubishi Mirage GT Hosts: Dan Roth, Michael Austin, Alex Kierstein Rundown Intro & Garage - 00:00 Nissan Trucks - 19:39 Q&A - 29:38 Total Duration: 40:19 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Feedback Email – Podcast at Autoblog dot com Review the show in iTunes Podcasts Audi Jaguar Mitsubishi Nissan