The method you have described will not give you an "accurate" reading. There are three significant deviations from the official method of determining the accurate nose load:
1 Whilst bathroom scales will probably be both more precise and accurate than most compression spring so called nose load gauges, they can only be classified as Accurate if they have been formally calibrated. Admittedly in the grand scheme of things probably not really necessary.
2. The official methods of determining nose load do call for the process to be carried out on level ground, they do not specify the caravan has to be level. In fact it probably wont be level when its hitched to the tow vehicle, The angle of the caravan to the horizontal does affect the applied nose load.
3 It is important to match the hitch height to its real towing height, so having some means of adjusting the height of the gauge is important. If using bathroom scales, the scales should be raised up so the measurement device is supporting the hitch. If you use magazines to set the level, put them under the scales not on top.
Hello Prof
I’m surprised at your comments. If I have given wrongful inaccurate advice then it is time I hung up my lead and left this Forum.
1. We are not dealing with rocket science. We have used Reich electronic , Milenco spring and bathroom scales as nose load gauges. All have been within 1kg bar the Milenco which could change range with the slightest touch.
What “calibrated” gauge do you suggest for the OP?
2. For me and indeed others, measuring the nose load , it is recommended the caravan is on level ,even ground , and itself level. I agree the angle to the horizontal shouldn’t make much difference but being level is still the best starting place.
Most units I see on site these days sit pretty well level when hitched. Heavy nose down for example are not a common site today. In fact such an attitude may be indicative of other problems.
3.We have done this to death over the years. Where the magazines or other support goes should not make any difference. You will recall our own Gagakev and Sproket, both competent Engineers set the scene with this. The scales sit on the level ground and the hitch sits on the “ball”.
