Home » Articles posted by submityourarticle (Page 10)

Level 5 Won’t Face The Challenge Of Nighttime Racing Again Until 2012

By Brent Arends

Level 5 Motorsports, one of the world’s most prolific racing organizations, is in the midst of rounding out the 2011 racing schedule, with just three short—but very important—races left to tackle. The SCCA Runoffs, the ALMS Petit Le Mans and the 6 Hours of Zhuhai in China are sure to be high-profile, intense competition races. But one thing they’re not: an entire day long.

The mother of all endurance races is the 24-hour enduro. With two on the 2011 books for Level 5 Motorsports, owned by Scott Tucker, the team had to be prepared for a grueling day—and night—of racing. The Intercontinental Le Mans Cup series offered the 24 Hours of Le Mans in France, in June, and the Grand-Am Rolex sets up the Rolex 24 at Daytona International Speedway, which was Level 5’s first race of the 2011 year, in January.

Having made podium at both super-endurance races, the Level 5 drivers (which also include Luis Diaz and Christophe Bouchut) have clearly mastered some of the unique challenges a day-long competition presents. One of the most obvious: driving in the dark. After focusing on a well-lit road all day, drivers are often challenged to keep a competitive pace when it gets dark, especially on tracks that aren’t well-lit. At the Daytona International Speedway, almost all of the track is lit by floodlights, so drivers adjust more easily. But in the 24 Hours of Le Mans, the course occasionally goes through secluded highways in France.

“It takes a little while to get adjusted,” Tucker said. “But the track is still there; you just have to get used to it.” When making the transition from day to night, teams make sure to check that the headlights are working perfectly, and the rest is up to the driver. “You sort of become one with the road,” Tucker says. “It’s the same way a blind person’s other senses are heightened; your other senses eventually take over, and soon enough you’re matching the lap times from earlier in the day.”

Many of the newest Le Mans Prototype models regularly approach 200mph in race situations, which is amplified when driven at night. “There’s nothing like driving at night,” Tucker says.

Tucker and his Level 5 team secured an invitation to the 24 Hours of Le Mans when they won their LMP class in 2010 at the ALMS Petit Le Mans. Taking the wheels of LMP2 cars for the 2011 season, the team will again look for their invite to 24 Hours of Le Mans in 2012—hopefully, with an LMP1 class designation. This weekend, the team competes in the SCCA Runoffs, but the race they’ve really been focused on all season has been Petit Le Mans. They recently added a new car to their Microsoft Office-sponsored entries, a cost-capped Honda chassis with modified fuel injector and other specifications that ultimately allow the car to run with more power at a lighter weight.

So far, the car has proven unbeatable; it’s debut at Monterey was flawless, and the weeks leading up to Petit Le Mans are just additional opportunities for the drivers to acquaint themselves with the new set of wheels. With an LMP2 win at the top of their to-do list, the next time Level 5 Motorsports makes the transition from night to day could be in an LMP1 class at the 2012 24 Hours of Le Mans.

Brent Arends has been keeping a close eye on Scott Tucker, owner and driver, of Level 5 Motorsports throughout the past year. To get more information about Tucker, check out http://www.planetlemans.com/?s=scott+tucker to the latest on sports car and GT racing.

Share

Level 5 Motorsports’ Impressive HPD ARX-01g Debut, Wirth Research Inks A Long-term Deal With Honda

By Brent Arends

There has been no shortage of publicity regarding the Scott Tucker-owned Level 5 Motorsports racing team’s mid-season decision to switch cars. Despite the risks the change brought of interrupting the explosive momentum the team has maintained since the season’s open, as well as the potential points lost by withdrawing from races while the car was being finished, the change has been nothing but positive. The marriage Level 5’s skillful and talented drivers; the integrity, innovation and reputation of Honda Performance Development; and the precision and technique of Wirth Research has benefited all three groups.

When the wait for Level 5’s new LMP2 Lola Honda Spyder was over, it was obvious the car was well worth it. Not that Level 5 had too much to worry about, with wins at the 12 Hours of Sebring and the Grand Prix of Long Beach, along with podium finishes at the 24 Hours of Le Mans and Six Hours of Imola, all during the team’s debut LMP2 season. When the team ignited the engine on the raceway for the first time at ModSpace American Le Mans Monterey presented by Patron, they bettered their season in the only way to better an already winning season: They made history. Tucker and co-drivers Christophe Bouchut and Luis Diaz earned their highest overall finish of the season at the Laguna Seca race. The car didn’t require a single unscheduled pit stop or encounter any unexpected issues, which easily secured the team’s fourth LMP2 victory of the season and Tucker and Bouchut’s drivers’ championships.

Bouchut nailed a best time of 1: 16.867 in the new HPD ARX-01g, which is just a second behind the LMP1 winning car’s fastest lap. With this being the first iteration of the HPD ARX-01g, with development still in early stages for cost-capped configurations, the pace was impressive, especially considering the model had less than three hours of run time prior to the endurance test.

The lofty expectations for the new Honda before it was finished were valid enough that Tucker had reserved the first two chassis that were produced, and the team waited patiently for its new and improved car, even withdrawing from competitions in order to have it in time for Petit Le Mans. The hype surrounding the car, both before it was proven and following its tenacious debut, solidified the partnership between Wirth Research and Honda Performance Development (HPD), as Wirth announced Sept. 9 the beginning of a new long-term technical partnership with Honda.

Wirth and HPD have been working together since 2003, but the new relationship extends the companies’ sports prototype programs and includes a new IndyCar project. In an official Wirth press release, the company notes that the unyielding success of its LMP1 and LMP2 cars in the past year have opened the opportunity to build on the achievements and begin to evaluate several new projects for high-profile clients.

“We looked through the numbers, inside and out, and from our perspective, there’s no doubt the Honda package in the new cost-capped configuration will be a front-runner in LMP2,” Tucker said, after making the mid-season decision to switch cars. “We’ve seen gains with the engine all year, and the exciting thing is that there’s still room for improvement.” Members of the Level 5 team even visited the Wirth Research center to check out their new set of wheels in production.

It’s not just any car that can evoke so much anticipation out of an already dominant racing team. It can be expected that as long as there’s improvement in the prototypes, teams like Level 5—which constantly strategizes and evaluates situations to optimize the chance of a victory—will keep HPD and Wirth high on their radars. The new long-term partnership between the companies is the exciting beginning of an era of innovation and ultimate performance ability in motorsports.

Brent Arends has been keeping a close eye on Scott Tucker, owner and driver, of Level 5 Motorsports throughout the past year. To get more information about Tucker, check out http://www.motorsport.com/#/all/search/?q=scott%252520tucker

Share

Some Tips For Lowering Emissions and Passing Smog

Amsoil QuickShot can help pass emissions tests.

Amsoil Quick Shot

 

If you reside in certain parts of the country, vehicle emissions and smog can be a big deal. Every few years a smog test is required and if a car doesn’t pass it , it can cost thousands in repairs and hassle to resolve the issue. Unfortunately for the car owner, there are many various malfunctions that can go wrong that can cause a vehicle to fail, and it’s up to the owner to figure out what the problem or problems are and to fix them. If you are having difficulty passing a smog test, or if you’re just interested in reducing the exhaust of your car , there are a couple of things you can do. But it’s first important to understand a bit more about how the car functions , so you can understand the exhaust that comes out of it.

A vehicle uses two things for fuel. Aside from gas , a vehicle needs a lot of oxygen for the combustion process. It also requires a spark for each combusion sequence and the right timing for everything to ignite at its proper time. When an engine is running, gas along with a certain amount of oxygen are pushed into the combustion chamber of the engine and then compressed and ignited. The ignition produces heat and energy and also sends the pistons firing, creating kinetic energy for motion. The fuel is given a certain amount of time to burn up , and is then forced out of the combustion chamber and into the exhaust manifold . If all the components are working properly, the fuel mixture should be completely burned up and there should be very few residual emissions.

But a few different issues can happen that can cause excess emissions to come out of the exhaust. The two biggest things that can happen are poor fuel mixture, and additional compounds getting into the fuel. Let’s tackle the second problem first. Extra compounds getting into the fuel mixture is generally oil from rubber seals that are wearing out . The rubber seals in your engine that separate the oil from the gas wear out over time and begin letting oil into the combustion chamber. This causes the oil to burn up during ignition and to be pushed out through the exhaust system. If your vehicle is burning oil, one solution that you can try is to buy engine oil stop leak that will soften and expand the rubber and recondition the seals to get them back to a better state of function.

Second if your fuel mixture is poor , then it is either lacking in oxygen or gas . If it is lacking oxygen, then it might just be that your air filter is clogged and could use replacing. But more commonly, the gas is the part that is lacking in the fuel mixture. This can arise through clogged fuel injectors, a partially blocked fuel filter, a partially blocked fuel pump, and a variety of other factors. It may be a good idea to use fuel injection cleaner a few weeks in advance before the smog test or to replace your fuel filter to help to resolve some of those problems with your gas ratio. Hopefully these simple solutions will help your vehicle start working correctly and will help you get your vehicle’s emissions down.

There are a couple of powerful tips for how to pass a smog test that you should check out. It can often be tough to pass without help. For more info on oil and your options there, check out synthetic oil vs regular oil.

Share

How a Race, Track, Drift and Rally Car Braking System Works? – Motorsports Tech Session

Info  PR: n/a  I: 514  L: 0  LD: 329  I: 66  Rank: 2036752  Age: June 18, 2003  I: 0  whois source Robo: yes Sitemap: yes  Rank: 1172679  Price: 89 Density

Hello.

How are all you Motorsport Tech Session hard core fans?

Thank you for all the feed back you give us, with out you we are nothing.

If you are new to the Motorsport Tech Session then I am sure you will enjoy this article.

How a Race Car Braking System Works?

The Master Cylinder is one of the key elements of a brake system. This article will inform you how the Master Cylinder / Pump forces brake fluid through the system.

The way this happens is a basic lesson in hydraulics.

It all starts with the actuating force that is fed into the master cylinder. This force is provided by the driver’s foot on the brake pedal. The maximum force that is exerted on the brake pedal is approximately between 150 to 200 pounds of pressure, the average pressure on the brake pedal in a race condition is 100 pounds of force.

The driver is normally limited to a maximum of approx six inches of pedal travel that can be applied to the brake pedal. This is determined by the pilot leg length, closeness to the pedal and leg angle. The ability the driver has to apply the force to the pedal will be influenced on the driver body restraints like the seat belts and shoulder harness, the angle of the hip and the angle of the knee joints. Having a straighter knee joint will allow an easier operation of the pedals, and more force can be applied to the brake pedal.

The force that is exerted by the leg and foot to the brake pedal is then multiplied by the leverage that is in the pedal ratio. Most production cars are 3 to 1 or 4 to 1 this is enough of a ratio when a servo is used, however with out a servo this ratio is a little low. Most race car pedal boxes that do not use a servo and will have a ratio between 5 to 1 and 6 to 1.

To give you an example of the ratio increase here are a couple of examples:

100 pounds of pressure created by the driver to a 5 to 1 ratio pedal will deliver 500 pounds of pressure to the master cylinder push rod. (100 lbs x 5 = 500 lbs)

100 pounds of pressure created by the driver to a 6 to 1 ratio pedal will deliver 600 pounds of pressure to the master cylinder push rod. (100 lbs x 6 = 600 lbs)

However always remember if the pedal ratio is increased, the pressure will increase and also the movement of the pedal will increase.

The next consideration with a race car brake pedal system is the master cylinder bore size. The most common bore sizes used are:

.75 – Internal piston bore size O/D

.7 – Internal piston bore size O/D

.625 – Internal piston bore size O/D

The force supplied into the master cylinder is divided by the square inches of the piston, and the output of the master cylinder is pressure in pounds per square inch.

.75 Cyl Bore is .44 Sq. in. of area

.7 Cyl Bore is .38 Sq. in. of area

.625 Cyl Bore -is.30 Sq. in. of area

For example:

300 pounds of pressure created by the driver with the pedal ratio increase is applied to a .75 bore master cylinder (Force supplied into the master cylinder is divided by Square inches of the piston) 300 pounds divided by .44 = 681 pounds per square inch line pressure

300 pounds of pressure created by the driver with the pedal ratio increase is applied to a .625 bore master cylinder (Force supplied into the master cylinder is divided by Square inches of the piston) 300 pounds divided by .30 = 1000 pounds per square inch line pressure

It is easier with this knowledge to understand that a smaller bore master cylinder will deliver more pressure into the brake lines and to the brake calipers.

So why not use smaller bore master cylinders all the time? There are two reasons why this is not the perfect solution.

1) With a smaller bore master cylinder the pedal will require more travel to displace the given fluid needed.

2) Higher line pressure aggravates line and calliper expansions and thus uses up more fluid.

If a system is so stiff (meaning no or little line expansion or calliper deflection) that the driver is only using a small part of the total pedal travel, then using a smaller bore master cylinder will reduce the pedal force, or effort required by the driver to stop the car.

Once the pressure leaves the master cylinder there is not a great deal of movement in the brake lines, what does happen is a pressure build up and pressure transmittal.

To understand this theory in a practical way, please imagine you are blowing down a straw. Place a finger two inches from the base of the straw and blow you will feel the air passing over your finger.

Now block the straw with your finger. There is still the volume of air in the straw and you are still generating force by blowing down the straw. However your finger only feels the force against it.

This is a very simple example of the principle of pressure transmittal, as used in a sealed brake system.

I hope you have found this article interesting and thank you for your time.

Grant Loc has been involved with Motorsports for over 15 years and the Director of obp Ltd. obp Ltd is a major player in Manufacture and Supply of Quality Race Car Products and provides most of the leading Motorsport distributors all over the World. obp manufacture Race Car Pedal Boxes, Handbrakes,Seat Brackets, Swirl Pots etc. www.obpltd.com

Share

What Is “The Blip” And “Heel And Toe”? Race Car Tips – Tech Session

Hello, ok straight to business.

What is the Blip as referred to by Race Car Drivers?

The Blip is used when you are changing down a gear without losing speed or grip. Properly done the RPM should be raised to approx 2700 to 3000 RPM just before the clutch is engaged again. You do not push the throttle and hold it, you tap it, the best term to explain it is you “Blip” the throttle, this is a quick and sharp burst.

The blip should take place just before re-engaging the clutch by doing this you will not get the shock through the drive train or slow the car down when going from a higher gear to a lower gear. In a competition environment on the race track when you are driving close to the tyres limitations of adhesion, a down shift with out a blip of the throttle could cause a loss of grip and send the car into a spin or lose grip in the straight line braking zone.

How and what is Heel and Toe?

Because you are using your left foot on the clutch and your right foot on the brake, you have to make some adjustments so you can blip the throttle. The way to do this is to adjust your foot position and use a race pedal box designed for heel and toe. You use the ball of you foot pressing on the brake pedal making sure you leave enough of the outside of the foot to roll over so you can blip the throttle. By blipping the throttle you will enable a smooth down shift with out losing any tyre grip.

The correct brake and throttle pedal relationship should locate the throttle and brake approx 30mm to 50mm apart. The throttle is set slightly below the brake pedal when the brake is hard on. The heel and toe method is a pretty hard technique to master and requires plenty of practice. The heel and toe term was phrased over 40 years ago when the brake pedal was on the right and the clutch pedal was on the left and the acc pedal was in the middle and 6 inches lower. Then you had to use your heel and toe to blip the throttle.

As I have explained with today’s pedal systems the heel and toe is not used, but the term still remains. The pedal system in most road cars are not set up for heel and toe, so drivers are forced to go through some real contortions to be able to touch the brake and the throttle pedal at the same time.

This is why I recommend you change the standard pedal set up to a race pedal system if you are using the car for track racing, rally, drifting or track days it will make life a lot easier and improve your lap times.

Thank you for your time, I trust this has been of interest to you.

Grant Loc has been involved with Motorsports for over 15 years and the Director of obp Ltd. If you like this article please go to our web site www.obpltd.com register to our email news letter and Race, New Products updates. We also have two free reports to get. obp Ltd Manufacture and Supply Quality Race Car Products to leading Motorsport distributors all over the World

Share