Tag: f1

Dr. Kathryn Richards from Mercedes AMG Petronas and Dare To Be Different on women in (sim)racing

Posted on by Jaap Grolleman

At Virtual Racing School, we’re convinced that anyone who has the determination and access to training tools can be a successful racer, whether that’s on the track or in the simulator, whether they’re male or female. While men have dominated road racing since its inception, we think that simracing could and should be the big equaliser. Simracing has extremely low entry costs, and literally anyone can enter the competition from anywhere of the world. Yet why are there still effectively no women competing in simracing?

This is why we contacted Dr. Kathryn Richards, who’s a senior wind tunnel technician at the Mercedes AMG Petronas F1 team, as well as ambassador for Dare To Be Different, which is a non-profit organisation, spearheaded by Susie Wolff, to help to inspire, connect, showcase and develop women who either currently work in, or want to work in motorsports.

Kathryn Richards at the Mercedes AMG Petronas at Brackley, England — © Mercedes AMG Petronas Formula One Team

Kathryn, why are we seeing so few women in racing? What’s the barrier?

I think it’s primarily a cultural barrier. The prevailing preconception was, and still is, that motorsport is something for boys. However since the formation of the D2BD community, I’ve realised just how many young girls there are out there, trying to get involved in many forms of motorracing and engineering. I just think that when these youngsters get older, that’s where the problems arise. Are there the opportunities? And are they overlooked in place of their male counterparts?

As it stands, I certainly see somewhat of a chance, and more success for female engineers then female drivers, but hopefully one day this will change.

 

Perceptions and prejudices are very difficult things to change. How do you do that?

We break perceptions down quietly, and without people really knowing about it. D2BD is a perfect platform to do this. We just need to help and encourage the younger generation to follow their dreams, and where possible provide the opportunities for them to realise them. In this way, more girls will start to filter through into all aspects of motorsport and engineering. The key is the reassure young girls that it’s OK to get into motorsport, and that actually the boys really don’t mind us being here.

 

Apart from perceptions and prejudices, are there things that need change for women to succeed? 

To be honest I don’t think there is. I believe in equal opportunities both ways. If you’re good enough and earn the right to be there, you will succeed.

 

F1 drivers are now using simulators at their factories. Do you think simulators can be a form of training at home? 

Obviously there is no substitute for reality, but practise helps. In Formula One, our simulator is an essential tool for preparing both driver and engineers for all the eventualities of a race. You see the same in other industries, for instance airline pilots and astronauts also use simulations as a vital part of their training.

While I’ve never myself used a simulator, I can only imagine that they’re good for training the reflexes, hand-to-eye co-ordination, as well as learning the track. If simulators give young girls the edge in racing, then so be it. I think as individual we should all do whatever we can do to improve ourselves and get ahead.

Dare To Be Different with Susie Wolff and a Williams FW36 at Knockhill, Scotland — © Dare To Be Different

You can read more about Dare To Be Different and their activities on their website, www.daretobedifferent.org.

5.6: Camber & Toe

Posted on by Martin Krönke

In article 5.5 we’ve covered ride height, and with this article we’ll continue the setup adjustments on the suspension, namely camber and toe. We’ll go over both of them together, as their effects are tightly coupled.

Click for full-res

Camber
Camber is the vertical inclination of the tire. Zero camber means that the tires are straight, perpendicular to the road and parallel to each other. With positive camber, the top of the tires points outwards of the car. With negative camber, the top of the tires points inwards.

Toe
Toe is the angle the tires are rotated around their vertical axis, looking at them from above the car. You have no toe if the tires are parallel to each other, along the direction of the car. You have toe-in when the tires point in towards each other, and toe-out when they point away from each other.

The effect of camber on available grip
As you go through a corner, the cornering force (as discussed more thoroughly in 5.3) causes the car to roll and the tire to deform, as it twists between the car which wants to go one direction, and the track that’s going the other direction. This is called lateral tire deflection.

With zero camber, the force on the tires are equally distributed along the contact patch when you’re standing still or driving in a straight line. This increases the available grip under straight line braking and acceleration (assuming no camber gain). Cornering with zero camber causes one side of the tire to unload, while the other side of the tire takes more load. This is unequal load distribution and lowers the overall available grip on the tire, just when you need it most: while cornering!

With negative camber, the force distribution along the contact patch is somewhat unequal while driving in a straight line. However, when cornering forces and carcass deflection come into play, they can negate the effect of negative camber, equalising load distribution along the contact patch. This maximises the available grip on the outside tires (which are the ones taking the heavier load), exactly the moment when the car is limited by its available grip. This is the exact reason why typically on road cars you’d use negative camber.

Tradeoffs of using camber
As always, nothing comes for free. While camber can help cornering, it causes additional heat, more tire degradation and uneven wear pattern on the tires. You should also realise that you are trading off traction on a straight line (braking and acceleration) with cornering grip. This means that the track profile is a determining factor on how much camber you want to run. In general, a track with mostly straights and low speed corners, you’d run lower camber; and on tracks with lots of bends or high-speed corners, you’d run more camber. And, as always with mixed profile tracks, you’d have to experiment different settings to see where you can gain more time; on the straights and low-speed corners, or high-speed corners.

Camber and vertical stiffness
Vertical stiffness of the tire is hugely tied with tire pressures, as discussed in 5.2. This is mostly to be considered on tires with high sidewalls. Having the tire inclined at an angle may cause the sidewall to deform a little. The effect is that of a softer tire without changing the tire pressure. As of time of writing, this really is only something to consider with two cars on iRacing, the Williams FW31 and the McLaren MP4-30.

Effects of toe-in and toe-out
There is one more effect of camber that we haven’t mentioned yet. If you roll a free tire at an angle, it would want to follow an elliptical trajectory instead of a straight line. In other words: an angled tire wants to turn. The force that causes this effect is called camber thrust. This results in a bit more friction, heat and wear, which can be offset by a toe-out adjustment. You can also use a toe-out adjustment to get the slip angles of the front tires in a more optimal spot. So you’d typically run some toe-out on the fronts.

Toe adjustments on the rear tires also have an effect on car handling. Toe-in on the rear creates understeer, which can help with cars that are oversteery on exit. The tradeoff is wear and heat in the rear tires. Toe-out on the rear is generally wrong, as you’re likely to get more oversteer on exit.

Up to you

While building a setup, go through the order of tire pressures, anti-roll bar, ride height and spring rates. If you have that set, experiment with the camber angles to find the optimal balance between speed in the corners and on the straight. Use toe-out on the front tires to counteract camber thrust, and possibly toe-in on the rear tires, to optimise handling.

2.1: Oval or road?

Posted on by Ray Alfalla

The stereotype of oval racing is that racers just turn left, full throttle, and that therefore oval racing is easy. But there’s lots of skill involved in oval racing, especially with around forty cars with 725 horsepower fighting for the same piece of tarmac.

Whether you should pursue either oval or road racing (or both) is completely up to you. But here we dive into some of the differences here, as well as some of the similarities.

Differences in race procedures
In road racing, the car attempting to overtake should have its front tires up to the leading driver’s side before the corner, or else the corner is considered to belong to the leading car. On ovals, having any sort of bodywork next to the leading driver is enough to challenge the leading driver into the corner. This is because racing side by side is way more common on ovals, compared to road racing, where going side by side is potentially much more detrimental to each driver’s race.

Regarding pit strategy, road racing generally has very few, if any, full-course caution flag period in a race, which in turn allows the team to set one or two main strategies for the race. On ovals, because of the frequency of full-course cautions and how short the lap times are, strategies are often made on the go. Stopping for fuel, tyres, or both all depends on when the caution flies, who pits around you, and your track position.You’ll probably also go a lap down when pitting under green and be trapped a lap down if a yellow comes out directly afterwards. All these factors make oval racing strategies very diverse and improvisational.

All race starts on ovals are of the rolling kind, whereas road racing sometimes features standing starts.

In NASCAR oval racing, there is a ‘free pass’ or commonly known as ‘lucky dog’ rule. This means that the first car which is a lap down when a caution flag flies, gets to go around the track and regain a lap. Lapped cars can also receive a lap back if all lead-lap cars ahead of them pit and they don’t. This puts them directly behind the pace car, and they’re allowed to pass it and regain their lap on the last caution flag lap.

Oval racing is much more affected by dynamic track rubber buildup than road racing. Road racing usually has a fairly defined apex in each corner, and does not vary much throughout a race. On ovals, many of the turns have a wide radius, and some are extensively banked. This allows drivers to run the outside line. Due to ovals being usually much shorter in length than their twisty counterparts, this means that many more cars go over a certain groove on the track – and often. Races can consists of over 200 laps. This means more heat transfer onto the track, as well as rubber buildup. In NASCAR stock cars, more heat and rubber usually means a lower amount of grip. This causes drivers to ‘search’ around the track in the corners for more grip. Some will run the inside line, others the middle, and some may dare to go up by the wall if there is enough grip up there to compensate for the longer distance traveled.

Differences in setup approach
Since oval turns go in only one direction, the car is setup to be stiffer on the right side (because a left turn shifts weight to the right). On a road course, you would generally have a balanced (symmetrical) setup since you have left and right turns. On the ovals, the car is optimized to turn left. Everything in the car is made to turn in that direction. If you try a right turn with an oval setup, the car will not turn well at all.

Difference in skills required
One of the biggest differences between road and oval is the length of the turns. Road courses put more emphasis on hitting the apex, as more turns are short in comparison to ovals. On the oval side, turns are generally divided by the drivers into entry, center, and exit. When describing handling characteristics, the car may for example behave completely different at the entry of the turn compared to the exit. Drivers have to be able to split the turns of the track into different sections, and construct their setup for each phase of the corner. The driving skills required are fairly similar, but can have some key differences. The road side is more focused on quick reflexes and precise apexing, while the oval side centers on car control and adaptability to changing track conditions.

Similarities
At the end of the day, whether road or oval, all drivers push their cars to the limit to try and beat everyone else on the track. Oval and road racing are more similar than they are different. Drivers have to find the grip limits of their respective cars, and maneuver around traffic in order to get to the checkered flag first. Many drivers can run both disciplines competitively, but few can do them at the top level. As similar as these two sides are, they still take a different mindset to compete in each, and at the core have different cultures attached to them. But with that being said, racing is racing, and a true race fan will enjoy anything on wheels that goes fast!