The right ball pressure is important for, To achieve stable driving with caravan.
Your hitch on the car must not exceed burdened with the weight that is given for the car, However burden many campers with a little more ball pressure to achieve more stable ride.
Most cars need to be charged with 75 kg (ball pressure vertical pressure) on the towing hook, you can see in instructional book or towing nameplate how much your car must be loaded with the ball pressure.
it kugletryk, standing on the towing equipment identification plate and on the nameplate on the front of the caravan, must not be the same. But according to the traffic rules, it is always the smaller of the two ball pressure, that counts.
Check the maximum load before driving with the caravan:
Ball pressure as mentioned, the vertical weight as the caravan gathered strain your tow hitch on the car and your car's total weight. End of knowing his caravan when it is packaged as would like it, you should check the caravan coupling load, then need but not so familiar but after his caravan ball pressure.
The goods must be positioned in, ensuring an adequate ball pressure. For small ball pressure or negative ball pressure will cause unstable driving. Usually trailers approved with a maximum clutch pressure on 50 – 100 kg depending on the gross vehicle weight. The heavier the trailer is, Dec greater should be kugletrykket. it is recommended, at 5-10 % of actual trailer total weight rests on the ball, maximum of what the car, the hitch and the trailer is intended for. (Source National Police Training Plan for driver training for category B / E
VERSION 7.07 – point. 6.2.5) – And • link: TOWED VEHICLE CATEGORY B
A too small ball pressure, for example, get the caravan to, that runs noisily on the road, and can get the caravan to snake at a low speed – Never drive with the little ball pressure!
Do not have a kugletryksmåler, you can use an ordinary bathroom scales – See below picture and text regarding. weight NOSE.
The ideal ball pressure for an empty caravan is about 30-35 kg. And for a holiday packed caravan vertical coupling load should be on 75-100 kg, However, with regard to the legal sphere pressure for the tow and the car.
However, you should run with the ball pressure that makes your road trains to run most harmonious. A kugletryk on 75- 100 kg is often the most campers operate at in order to achieve smooth driving the vehicle combination.
The length of your caravan influence how much air resistance reduces maximum load, a shorter caravan reduces the maximum load over a longer caravan at the same speed, provided that the two caravans have the same air resistance, and drawn by the same model of car.
For large ball pressure can reduce the car's grip on the front wheels. When the police consider your road train, checking the weight of the vehicle's front wheel, the emphasis must be at least 20 % of vehicle weight, too high a ball pressure can cause you do not meet the 20 %.
The police does not check your ball pressure, unless the vehicle combination looks visually “much” wrong – The police check on your vehicle combination has 20 % of vehicle weight on the front wheels and the caravan axle.
Police consider your caravan follows:
When the police should check weigh your caravan is the caravan is not disconnected from car.
• Police check the vehicle's steering shaft (front), and the front wheels are on the weight. Here controls police, at least 20% the car's weight is on the front wheels (car steering axle).
• the car with the caravan coupled is run in to the weight, that is the only car standing on weight. Now weigh the car's total weight including. the weight on the tow ball as the caravan is not disarmed. Ball pressure is thus integrated into the car's overall weight.
• Finally, run the car off the weight, Thus, only the caravan axle standing on weight (The caravan is still on the towing hook). Now the caravan axle load control considered. The axle load is also used for, to control the car's legal arm weight are met.
Police weighing caravan actual axle load and the vehicle's overall weight, constitute wagon train's actual weight.
Police have no immediate interest in how much your ball pressure is, unless it looks visually completely wrong (eg car hanging “much” ass). The police check often, that your car and trailer fit together, but have generally not interest caravan's total weight and the actual coupling load.
Calculate weight to the nose wheel:
See the picture below!
You must measure the weight ball by ball coupling, the which is put on the car's tow hitch, and bullet weight should sit up in the ball coupling where the towbar usually sit. By this measurement, you get the correct ball pressure (vertical pressure).
Meter example with a bathroom scale on the nose wheel you will not get the correct ball pressure. Some campers use a nose wheel which is built with weight readings, and here the maximum load is read as a larger number because the nose wheel is further back or further away from kuglekobingen – See the picture below.
You can measure your way to how much weight is on the nose wheel eg (See picture): Drawbar length as the image shows the distance from the axle to the center for a ball coupling 4200 mm multiplied by the maximum bullet weight for example, 75 kg, divided by the distance to the nose wheel center as the picture shows 3500 mm – Results are 90 kg in the middle of the nose wheel (4200mm x 75kg/ 3500mm).
See picture showing an electronic load indicator.
See picture showing a normal load indicator ca. kr. price 140,- (2014).
We use self Winterhoff jockey wheel with integrated load indicator:
|Often you measure the maximum load a few times, also know to his caravan, because you often loader in the same way and with the same load.|
|Your caravan ball pressure becomes less when driving with your caravan, because air resistance decreases your caravan coupling load - It is taken into account cf.. above recommended ball pressure.|
|Too little ball pressure is very dangerous to run with, it can put your caravan in beating at low speed, and you feel very uneasy caravan.|
Join the vote:
|Which ball pressure you apply?||Voice percent from Caravaninfo.dk vote|
|I am running with MORE than 75 kg i kugletryk||72.43%|
|I run with LESS than 75 kg i kugletryk||27.57%|