The readings on your scales will then be false 3. Although this could mean the track needs to be widened, it can also mean the opposite. The less castor in a kart, the less road-feel the driver will receive. Put shorter wheel hubs on the axle. Compensate for an unlevel floor by placing shims under the appropriate corner scales.
This can be done by purchasing a 5-6 ft level and checking floor where the centerlines of the front and rear axles will rest. You might have to move the seat just a little bit to obtain the correct weight distribution. I will now go through the various components on your kart and explain how you can alter its handling by making adjustments to them. If you set the rear track too narrow you may generate too much rear end grip which will result in severe understeer no grip on the front. I like to set my kart up a little to the wide side but without losing grip on the rear end. As a result, only part of the tire is actually touching the track and the kart gets loose. Weight Distribution should be 43.
That was a result of faster corner speed as the grip improved, which in turn gave us better top end speed. Be sure to fit the tyres with the correct direction of rotation. Also if you have wet weather extender hubs use them, they are very affective as they allow you to run your wheels wider than normal. Not only does this have the potential to cause injury and equipment damage, it is basis for disqualification during a race. Once final weight placement is determined, secure all weight properly. Where the track offers low, medium or good grip the response will be as follows: Narrowing the rear track will increase rear end grip. The rear track setting is important in getting the kart to handle the way you want and also effects the amount of power used to turn a corner.
This is best done by removing the front wheels and fitting line up plates in the horizontal position. You can purchase a turbo visor from most kart shops. Drop 1 psi in the front tires 3. Not only does this have the potential to cause injury and equipment damage, it is basis for disqualification during a race. Rear End Adjustments Introduction to the Rear End The rear end of a kart begins from the back of the seat.
Usually there will be a difference of 5 or 6mm in these measurements as the steering shaft in most karts is offset in line with the driver. Raising the chassis height creates more leverage in which to transfer side weight to the opposing tire and thus results in more front end bite at the entrance of the corner. It does this by transferring weight to the opposite rear wheel during cornering. Register a Free 1 month Trial Account. This can differ from person to person, I prefer to run lower pressures as this has more rubber on the track and in turn slightly more grip, but test the two tire pressures against each other to find which is the best for you and your kart.
The desired wieght distribution is achieved by scaling and adjusting the chassis and moving around weights. Although other factors in setup mentioned in this manual castor, seat placement, tire pressures, tire compounds, track, etc can cause some of the above problems, an improper weight distribution can result in improper diagnosis of problems at the track when the problem is actually very basic. Remove any additional seat strut bolts from the seat side only. The more the kart is toed in or out, the slower the top speed becomes due to excessive drag by the tires when they do not point straight ahead. The three engines we had with us were also going well. Too much castor slows the cornering speed of the kart due to unneccessary grip.
The torsion bar can be mounted so that the flat spot is vertical or horizontal, but the vertical setting creates a stiffer chassis, and therefore greater oversteer. Front wheels at 100mm wide and rears at 175mm will give good results. When making adjustments to the front track move each wheel a maximum of 5mm per adjustment. Wear race gear during weighing to have the highest level of accuracy possible. Chassis Adjustments By 15 times Australian Champion - John Pizarro Last issue we went into some detail on how best to set up the front end alignment on your kart. Now measure from king pin to pitman arm and adjust same to reflect the variation in the steering shaft measurement ie.
The problem is that once you have gotten your nifty new product, the zip kart chassis setup manual gets a brief glance, maybe a once over, but it often tends to get discarded or lost with the original packaging. However, the front should be narrower than the rear. Set toe and center the steering wheel. Camber back to zero, front track in to where we should have set it and the kart went like a rocket for the second heat. Be sure to check your rule book. These can be filled with lead shot and will weight around 12 lbs.
Rear ride height should be as high as possible. This can be done by purchasing a 5-6 ft. That is, turn into the corner too quickly. Lift the seat as much as 100mm and be sure the seat is not tight, as this will stiffen the chassis. It may also induce understeer lack of grip on the front end when turning.