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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.

Bugatti and Rimac joint venture profitable 'beyond expectations'

WARWICK, England — The joint venture between Croatian electric carmaker Rimac and Bugatti has been far more profitable than anticipated as the two brands work on developing vehicles together under one roof, Rimac's top executive said on Wednesday. "It's highly profitable and cash flow positive beyond anybody's expectations," Rimac CEO Mate Rimac told Reuters in an interview at the UK offices of the carmaker's Rimac Technology unit in Warwick. "It's such a win-win situation for everybody." Rimac added the joint venture has brought "lots of synergies going both ways." The Rimac Group comprises the Bugatti-Rimac JV, producing the electric sportscar Nevera and the Bugatti Chiron — which is owned 45% by Porsche AG — and a technology unit which supplies battery systems and powertrain components to other carmakers. Earlier this year the group raised 500 million euros ($519 million) in a new funding round. Rimac's CEO said the company has developed a "really close strategic relationship" with Porsche, which was listed by its parent Volkswagen in October. Porsche holds a 20% stake in the Rimac group. "We are really collaborating on many levels, developing and producing lots of key elements of their (Porsche's) future hybridization and electrification," he said. Rimac's CEO said the group must become more like Ferrari with a predictable, stable and profitable business before it can contemplate an initial public offering. "They (Ferrari) make projections and they always achieve," he said. "What I want to have is some kind of stability and certainty before we do an IPO because we don't want to make promises we can't keep." An IPO could happen anytime from three years to a decade from now, and could involve going public as a group or spinning off a unit, he said, but is definitely coming because "we obviously have financial investors that at some point want to exit." Related video: Earnings/Financials Green Bugatti Porsche Electric Luxury Performance Supercars Rimac

Are you the next Porsche 911 GT3 RS or GT2?

Porsche typically keeps to a suitably fast schedule when it comes to rolling out increasingly hard-core performance versions of the 911. After the 997 Carrera debuted in 2004, the GT3 version followed in 2006, and by the end of the 2007, Porsche had rolled out both the GT3 RS and GT2 versions. Then the facelifted 997.5 came out in 2008 and it was back to the start: the GT3 came in 2009, the GT3 RS and GT2 RS in 2010, and the GT3 RS 4.0 in 2011. But things have slowed down some with the latest 991 generation.
The new Carrera came in 2011 and the GT3 followed in 2012. By recent history's example, we should have at least two more hardcore models by now, but we don't. Maybe the engineers in Zuffenhausen have had their hands full fixing the spontaneous-combustion issues with the existing GT3, or maybe their attentions have been focused elsewhere altogether. But if these spy shots are anything to go by, it seems like they're back on the job.
Now we don't know if this prototype foreshadows a new GT3 RS or a GT2, but it sure looks more hard-core than the existing GT3 that many purists have derided as too soft, what with its automatic transmission and four-wheel steering.