Over the past decade, chassis dynos have proliferated across the country, in theory making it practical for the masses to evaluate the performance of their engine as installed in the vehicle and compare the results against their buddies’ cars. But this assumes that results obtained at a given facility can be directly compared to those from other facilities, and that the results accurately reflect the true power output of the test vehicle. There’s also the question of degree of accuracy, or whether the average dyno shop can adequately evaluate the true effect of small, incremental changes, particularly on late-model, computer-controlled cars. To dig deeper into these issues, HOT ROD contacted leading manufacturers, including Dynapack, Dynojet, Mustang, and SuperFlow; consulted Jeff Burt of TMR, a leading independent dyno expert and test consultant; and took a car to several local dyno facilities for some real-world testing. Read on as we strip the mask off chassis … [Read more...] about Chassis Dyno Guide – The Truth About Chassis Dynos
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The situation with Volkswagen and cheating emissions in the US market is very serious. Let’s attempt to focus on facts, answering the following six questions: What is Volkswagen accused of doing? How do diesel emissions work? (Very basic overview) What is a defeat device? Why does it matter? How can you digitally alter emissions? Should everyone panic? 1. What is Volkswagen accused of doing? The US Environmental Protection Agency (EPA) has issued Volkswagen a Notice of Violation (NOV) for failing to comply with the Clean Air Act. It’s claimed that VW has installed ‘defeat devices’ which alter the emissions of the vehicle. When the vehicle is being tested for emissions, the vehicle operates in a different mode which allows it to pass the test. When the vehicle is operating normally, the defeat device works to reduce the amount of influence on emissions control. It’s not yet clear how the vehicle knows when it is being tested for emissions. To … [Read more...] about Engineering Explained: What’s All The Hype About VW And Emissions Cheating?
ProRacing Sim, LLC is a computer software company that specializes in simulation software for the racing industry. Their featured products are the DynoSim Advanced Engine Simulation, the FastLap Sim racetrack simulation, DragSim Drag Strip Vehicle Simulation, Full Throttle Reaction Time Trainer, and the Briggs Raptor Engine Simulation software programs. Of special interest to the readers of this magazine are the DynoSim and the FastLap Sim programs. I installed copies of these programs on my personal computer and proceeded to build my very own race motor and test it. What I noticed right away (and I have some experience with racing oriented software) is that a lot of work went into making it user friendly. I lean toward the chassis side of racing life, but that’s not to say I don’t get excited about engines and power. At an early age (during the mid-’60s), I read every Hot Rod magazine I could get my hands on and developed quite a wide range of engine knowledge. … [Read more...] about DynoSim and the FastLap Sim – Racing By Computer
With the passage of time, the sport evolves. Racing in the 21st Century looks very different from the sport a few decades ago. However, some of the same threats exist, and the biggest continues to be the rising cost of racing. The idea of affordable racing is relative. Racers have been known to run a class or two higher than their budget would allow. Instead of racing five years, they end up running only three and then moving to a seat in the grandstands-if they can stand to watch the sport that drained their bank accounts and may have impacted their quality of life even more. When Keith Knaack spotted the trend in the late ’70s, he took action by creating a Modified car that would run on the area tracks throughout Iowa. It would involve little investment, racing for a smaller purse, but keeping the spirit of the sport thriving. The idea of the Modifieds has caught on and spread, becoming one of the largest classes in the country. However, the concept of affordable racing may … [Read more...] about Modified Racing Class – Affordable Modified Racing
Welcome back to GTPlanet’s Member Motorsports Spotlight. I’m a GTPlanet forum member and sim racer with a passion for real life motorsports. You can read all about my motor racing exploits in the first installation of this recurring series. For the fifth interview in the series, we’re back to North America, but to one of our friends in the Great White North, Robbie Arthur, aka forum member RobbiefromBC. Robbie is a third generation racer from, you guessed it, Mission, British Columbia, Canada. You race on sims, and in real life. Which came first? “Well if you’re talking about racing cars, then I started sim racing first. I grew up with petrol flowing through my veins so I raced anything I could against anyone interested. Pedal bikes, skateboards, roller blades. Heck, my brother and I would race each other down the hills by our house in those little plastic kiddie wagons. However, I never raced anything with an engine until later in my teenage … [Read more...] about Club Racing in Canada with GTPlanet Member Robbie Arthur
courtesy of edwinpr. Just when you think it’s all calmed down and you can finally kick your feet back and rake in some relaxation, in comes Gamescom with its own share of tantalizing information. Make no mistake, me kicking my feet back and raking in any kind of relaxation with everything that was going on prior to Gamescom was nothing but a pipe dream but it drives the point home; a point that’s been liberally hammered upon since E3 and prior, and it’s the fact that 2015 is action-packed with racing games and virtually every other game genre under the sun. Over the past two weeks a sentiment that was once celebrating the wealth of opportunities available at the helm of the number of racing games available throughout this year quickly became one that erred on the side of caution, it’s no fairy tale that too much of anything is never a good thing – your physician will attest to this, and while the two matters may rest on two completely different … [Read more...] about GTPlanet Community Spotlight: Paranoid, Complicated, and Down for Another Thrill
► Seven months with a McLaren 650S Spider ► Can a supercar be a viable daily driver? ► The CAR long-term test review finds out First McLaren, first convertible, first supercar. First time I had 641bhp on tap day-in, day-out. First time I’ve done 8.6mpg (Silverstone), 185mph (Silverstone) and my journey home in less than 20 minutes (not Silverstone). First time I’ve picked up the keys to anything in a place with orange ticks on the official stationary, Senna pictures on the walls and P1s ‘out back in the workshop’. First 650S Spider. Last 650S Spider. Balls. Forgive me if you’ve never ridden a motorcycle, and particularly if you have no time for them, but the parallels between using this country’s road network on a bike and doing so in the McLaren 650S Spider were striking. It starts with the nest of nerves that erupts in your tummy when you start the thing.Eighteen years since I passed my … [Read more...] about McLaren 650S Spider (2016) long-term test review