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Month: July 2015

How To Reduce Oversteer

What is Oversteer?

In the oversteer condition, your car’s rear end will be trying to get round the corner before the front! Accelerating makes the condition worse, steering into the slide and taking your foot off the accelerator can sort things out unless momentum has taken over at which point a trip backwards into the trackside scenery, tyre wall or crash barrier is very likely.

Reducing Oversteer

To reduce oversteer we need to induce less weight transfer to the front wheels to maintain grip at the rear. If we soften one end of the car, we resist weight transfer away from that end. The easiest way to soften or stiffen the suspension of a car is by fitting a set of adjustable dampers or. This is often the starting point for suspension changes as both will allow damping adjustments over a range from soft to hard. Many manufacturers of coilovers offer springs of varying stiffness rates allowing you to experiment with softer and harder springs. Anti-roll bars act in a similar way to springs, resisting body roll during cornering, stiffer anti roll bars can be purchased, many of which are adjustable to offer differing degrees of stiffness. Try the following to alter the weight transfer characteristics of your car:

•Try softening the rear damping or stiffening the front damping to reduce weight transfer to the front wheels.
•Use softer rear springs or stiffer front springs.
•Use a stiffer front anti-roll bar or a softer rear anti-roll bar.

You can also make changes to the physical components and set-up of your cars suspension to maximise the tyre contact with road at the front or rear depending upon where more or less grip is required. Depending on how adjustable you cars original suspension is you may need to purchase front or rear adjustable alignment bars and camber adjustable top mounts (many coilover kits come with these as standard) in order to alter the physical set-up of your specific car.

•Reducing toe-in at the front and/or increasing toe-out at the back encourages the rear of the car to break traction less readily than the front which has the effect of increasing grip at the rear.
•Reducing front camber can reduce the front tyres contact patch on the road reducing front end grip with the effect of increasing rear end grip.
•Increasing rear camber increases the rear tyres contact patch on the road increasing its grip.

How To Reduce Understeer

What is Understeer?

In the understeer condition, your car will be trying to plough on straight ahead rather than driving around a corner. Accelerating makes the condition worse, taking your foot off the accelerator and even light braking sees grip return to the front wheels as weight is transferred to them but this takes time.

Reducing Understeer

To reduce understeer we need to induce greater weight transfer to the front wheels to increase their grip. If we stiffen one end of the car, we allow weight transfer away from that end. The easiest way to stiffen or soften the suspension of a car is by fitting a set of adjustable dampers or coilovers. This is often the starting point for suspension changes as both will allow damping adjustments over a range from hard to soft. Many manufacturers of coilovers offer springs of varying stiffness rates allowing you to experiment with harder and softer springs. Anti-roll bars act in a similar way to springs, resisting body roll during cornering, stiffer anti roll bars can be purchased, many of which are adjustable to offer differing degrees of stiffness. Try the following to alter the weight transfer characteristics of your car:

•Try softening the front damping or stiffening the rear damping to encourage weight transfer to the front wheels.
•Use softer front springs or harder rear springs.
•Use a softer front anti-roll bar or a stiffer rear anti-roll bar.

You can also make changes to the physical components and set-up of your cars suspension to maximise the tyre contact with road at the front or rear depending upon where more or less grip is required. Depending on how adjustable you cars original suspension is you may need to purchase front or rear adjustable alignment bars and camber adjustable top mounts (many coilover kits come with these as standard) in order to alter the physical set-up of your specific car.

•Increasing toe-in at the front and/or setting toe-out at the back encourages the rear of the car to break traction more readily than the front which has the effect of increasing grip at the front.
•Increasing front camber can increase the front tyres contact patch on the road increasing its grip during cornering.
•Reducing rear camber reduces the rear tyre contact patch at the rear will again encourage the rear to break traction more readily than the front increasing front end grip.

What Corby Motorsport Does

Since 2006, we supply top end performance parts for fast road drivers, track day enthusiasts and race teams. We offer custom solutions for suspension, brakes and transmission as well as race car prep parts such as batteries, roll cages, fire systems helmets etc.

We also supply exhausts and engine tuning parts which our growing website will feature over the coming months. If you can find a part listed in one of our supplier sections, pop us a call for a competitive quote.

We can also offer fitting and set up of the parts we supply so again, pop us a call today.

Mike
Corby Motorsport
Tel: 01536 744256
Open 10am to 10pm 7 Days

The Corby Motorsport Blog

This Corby Motorsport Blog will feature information such as how to tune suspension, reduce understeer and oversteer and what parts will do what functions so our customers are able to make informed decisions about what parts to buy. Better to buy the correct parts once than find out half way through a track day that what you have just fitted is not cutting the mustard! Whether you are trying to reduce understeer or trying to figure out the best brake pad compound for a specific use of the car, our information will help you, if you cannot find what you need to know on our blog or website, just call!

Mike
Corby Motorsport
Tel: 01536 744256
Open 10am to 10pm 7 Days

Who are Corby Motorsport

Corby Motorsport is a family run business specialising in the supply of performance parts for fast road, track-day and race car drivers. We differ from the “box shifters” in the market place in as much as we will customise, as far as we can, any part or kit to suit your car spec and use so that you get the best part set-up for your specific use for extra performance. We have never seen an off the shelf race car, why would we supply off the shelf part when something tailored to your needs will give you a performance advantage! We don’t charge any extra for this service so give us a call or click the links to our website shop sections to see what we can do for you,

Mike