Moving the ballast forward or back changes the balance of the car and how it reacts in cornering. I think iRacing uses the term Ballast Forward because it’s measured by how far forward the ballast is from the center of the chassis. Too much angle can stop the chassis from rolling.īallast is usually made up of lead blocks or some sort of moveable lead. In theory at least, increasing the angle, or J-Bar rake, should tighten the car any time it’s up on the bars. This is commonly referred to as J-Bar rake.
The end result is that you shift the weight to the right rear sooner. If you lower the J-Bar on the axle only, adding more angle, the car will get “up on the bar” more quickly. That shifts dynamic weight to the right rear. The J-Bar raises the left rear of the car under acceleration. I usually find it’s okay to lift briefly on entry as is shown in the video. That means you need to stay in the throttle, at least partially, just about all the time. You really want to keep the car up on the bar as much as possible.
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Notice that the car drops off the bar very briefly on entry when the driver lifts.
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It doesn’t take full throttle to get the car up on the bar, but it does vary by the amount of throttle applied. This video shows how the car gets “up on the bar” under acceleration.
It’s the black J-shaped bar under the yellow coil spring. You can see the J-Bar in the video a little better at full screen. The video below is really good, but I still don’t quite comprehend how the J-Bar, sometimes called the Panhard Bar, actually works with respect to the handling of the car. This is probably the hardest thing for me to understand on these cars. One of the purposes of the J-Bar is to hold the rear axle in place laterally, or to keep the rear axle from moving from side to side. I still don’t understand some of it, and some of it may be wrong, but it’s what I’ve managed to pick up here and there about a few of the adjustments and what they do to the cars. With this post I’ll try to convey some of the things I have learned about the Dirt Late Model cars. Some things are similar, and some things are actually 180° out of phase. I quickly found out that setting up an asphalt car isn’t anything like setting up a dirt car. When dirt was released, I made the move because I love dirt racing.
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To learn more about Bird’s commitment to safety, visit our Safety Page, or consult our How to Bird guide for responsible riding tips to help you get started on the right foot (or wheel).After four years on iRacing, I have a fairly good understanding of iRacing’s version of most of the short track asphalt cars.
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“Safe Start is designed to help keep them and all members of the community safe on the streets by encouraging responsible riding and keeping scooters available for those who truly need them.”īird’s Safe Start follows on the heels of other recent safety initiatives including our Ride Better campaign, Safety School video series and skid detection feature designed to help our team proactively detect and respond to worn tires or hazardous and non-compliant riding behavior. “Late night, scooters and other micro-electric vehicles provide a valuable mobility resource for third-shift workers, bar and restaurant staff and many others,” said Rebecca Hahn, Chief Corporate Social Responsibility Officer at Bird. The Bird team will work together with city officials to monitor the effectiveness and impact of the in-app checkpoint, as well as to identify ways in which it can most effectively be enhanced moving forward.
Safe Start is already being tested in the US and will be made available globally throughout the summer. “Safe Start from Bird helps afford that moment by asking scooter riders to slow down, step back and think, ‘Do I really want to be taking a risk right now by operating a vehicle under the influence?’ Ultimately this is a step in the right direction towards keeping our streets safe and secure for everyone.” Mark Marquis of the Tiffin Police Department in Tiffin, Ohio. “Sometimes all you need is that one reminder, that critical moment of deterrence, to change someone’s mind and prevent a potentially unsafe situation from taking place,” said Det. The new safety checkpoint is the most recent initiative in Bird’s ongoing efforts to ensure responsible scooter riding in our 250+ partner cities large and small around the world.
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