When it comes to bump steer, if your like most racers, you're thinking bump steer could be important, but haven't got to checking your car yet.
Regular mechanics and alignment shops don't do bumpsteer. Specialist racing services might - but at what cost? Are they accurate? How accurate do they need to be? Will they know how to fix it safely?
With our new on-line training course, "Bump Steer Made Easy", a mirror, and a simple laser you can buy from the hardware store, you have everything you need to check your bump steer. Then, to fix it, follow our practical advice as to how to do just that.
Adding to our problems with bump steer, many of us now race independent rear suspension cars, where live rear axle once ruled. In changing anything affecting the suspension geometry, for example ride height, it's interesting to see what affect the change has on the bump steer curve.
With our instructions, checking your bump steer is incredibly easy and straight...
Our course, "Every Racers Guide to Suspension Tuning", includes showing you how handling works. As an example, this simple diagram is the basis for describing what's behind the Weight Transfer Worksheet™, leading to our simple definitions for oversteer and understeer.
The Moment of a Force is a measure of its tendency to cause a body to rotate about a specific point. Our diagram shows the top view of a car in a corner. The forces FF and FR create moments about the Centre of Gravity. Note also the Body Slip Angle, the difference between the heading of the vehicle and the vehicle centre line. We give you a complete "heads up" on how the body slip angle happens due to the slip angles at the tyre contact patches.
Front and Rear "Wheel Pairs" - Tyre Grip
You’ve probably heard the phrase “the only thing between you and the road is the four tyre contact patches”, or similar. Not that insightful. In fact, it’s pretty...
One Make or Spec Series Racing – Do the Best Driver’s Win?
In this pic, almost certainly yes. Cameron Hill leading at Winton in the Toyota 86 Series. How good is this bloke? He’s 2015 Formula Ford Champion in a car prepared by his Dad, and in the Toyota 86 series, again in a car prepared by his Dad, pole position for both rounds and winner of five out of six races so far - (only beaten off the re-start on the last lap of race 3 at Sydney Motorsport Park.)
For most spec series you can assume that the best drivers are winning. One Make and Spec series are designed to allow drivers with smaller budgets to compete on level terms.
But perhaps the biggest reason for spec series racing to exist – it’s supposed to give new talent a chance to show what they can do, against proven competition from the longer term stars in a category that is recognised on the national stage. In days past, the talk was how Touring Car drivers, and...
A question I’m often asked is “Do you have any experience setting up the suspension on my (XYZ model) car?” Makes sense. If we had experience with the XYZ model, then we’d have a better set up solution. Right?
However, it is the experience we gain over a wide range of vehicles, not just the XYZ model in question, that leads to best solutions for each individual race car.
With continuous application of our procedures using the "The Weight Transfer Worksheet™", we build up a store of knowledge, that guides us in what to look for with cars we do in the future.
If we are going out to test a race car, we must have a known baseline setup - ride stiffness and roll stiffness numbers from the Weight Transfer Worksheet™ we know will put us in the window around a good balance. We can adjust the set-up from there.
Why do we need to do this?
In a one off drive situation, race drivers are not programmed to tell us whether...
Mark's just won from pole position. In his book "Aussie Grit" he describes that day. After commenting on how good the car preparation was from the team at Milton Keynes he continues::
" Before quailifying in Spain Christian (Horner) told me to go out there and enjoy myself because I probably wouldn't get too many chances to drive a car like ours around that track. He was dead right: he had driven there himself and he knew that for Barcelona - a track we all know so well - you have to be confident in your car because it has so many fast corners. In Friday's practise we were already looking pretty strong.
During our briefing that night, we knew qualifying in this car in Barcelona would be something else. Being flat out in sixth gear through Turn 9 is quite a feeling, I can tell you. It's a spot where you usually had to...