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Everything posted by Lutz

  1. The type approval C of C will normally already show the "upgraded" MTPLM. Are you sure you are not referring to the NCC C of C? If it doesn't quote the type approval number it's not an official document.
  2. Well, things may have changed recently then. The details on the C of C (and the statutory plate, usually in the front locker) are the only definitive ones. If there is a label by the door displaying a different figure then this is for marketing purposes only, in line with NCC practice.
  3. From the responses to this and other forums I have not come across any UK owner who has confirmed receipt of the C of C unless specifically requested in cases where it is required due to the owner moving abroad and having to register his car or caravan there.
  4. That's all very well and good, but to my knowledge C of C's aren't passed on to the end user as a matter of course in the UK, so the owner won't normally be informed of the actual mass.
  5. Not really. Any outfit will remain stable at any speed if conditions are perfect, but disaster is almost inevitable as soon as there is some sort of disturbance.
  6. The reason why a caravan towed for a land speed record attempt was able to exceed the threshold or critical speed without the worst happening was because extreme care was taken to ensure absolutely perfect conditions so that not the slightest sign of instability occurred.
  7. Research has shown that the natural frequency of the average car/caravan combination occurs at round about 50 to 60mph. Much above that the outfit will not regain stability of its own accord if instability occurs without some sort of external corrective action. The likelihood of being able to pass through the natural frequency and back into a stable condition at a higher speed is pretty remote and should not be attempted.
  8. My comments to the above: To item 1 You have a valid point there. To item 2 It kind of goes hand-in-hand with items 1 and 5 To item 3 The difference between a 'minor wobble' and a 'full blown fishtail' is driven by speed alone. Any minor wobble can develop into a full blown fishtail if the speed in increased although the threshold speed at which it will happen is specific to each outfit combination. A lightly laden caravan may be a trifle more twitchy than a fully laden one, but that doesn't make it any less stable. Instability is the pot
  9. Actually, breaking it down to an issue of relative weights between the towing vehicle and the caravan is an oversimplification. It is not just the weights of the two vehicles which determine the stability of the outfit, but their polar moments of inertia, but that would be getting too technical as such data is not readily available and few would be able to interpret the data even if they had it. However, relative moments of inertia would explain why a flatbed trailer weighing the same as a caravan of the same size will be inherently more stable than the caravan or why a short caravan of the sa
  10. I would have thought that "security" is not entitled to carry out a thorough search of a vehicle, but only HM Customs & Excise or Border Force. I would be surprised if there is any legislation that allows such a task to be delegated to an outside source.
  11. Not necessarily. If they are clever they will make arrangements to sell for export without charging French VAT, just like a duty free shop at the airport.
  12. Actually, the towing limits are determined by test without regard for the type of trailer. On the basis of ride and handling tests carried out during the course of development, manufacturers set towing limits as ultimate limits, assuming an experienced driver, ideal road and weather conditions and optimal trailer weight distribution. Allowances must be made if any or all of these factors are unfavourable. The ability to start on a 12% incline is all that the regulations require, but any self-respecting manufacturer will go further than that. After all, he carries full product liability with re
  13. Actually, more likely than not, the true kerbweight is more than mass in service because mass in service refers to the vehicle which the manufacturer submitted for type approval, which is usually a base model with a minimum of factory fitted options, not the actual weight of the vehicle in question. The difference is often quite a bit more than the 75kg for the driver that I think you are referring to.
  14. Yes, the hitch handle has to be almost vertical in order to be able to unhitch. Sometimes it needs quite a tug to get it there.
  15. If one reads closely how towing limit is defined, one will see that the towing limit wouldn't be exceeded, even if the caravan is loaded to its MTPLM of 1208kg.
  16. I'm with you on that, but mine would be somewhat less pretentious - maybe something like a 1955 Riley Pathfinder, an Armstrong Siddeley Sapphire or something similar.
  17. I would suggest that one check the definition of towed weight first. It is as follows, quote: ‘technically permissible maximum towable mass’ (TM) means the maximum mass of one or more trailers that may be towed by a towing vehicle which corresponds to the total load transmitted to the ground by the wheels of an axle or a group of axles on any trailer coupled to the towing vehicle;
  18. There must be hundreds, if not thousands, of references to EU directives and regulations in current UK legislation. They'll all have to go through parliament first so it'll probably take several years to re-write them all, as there will surely be more important things to do first. On the other hand, it would be a good opportunity to clear the current mess up. Depending on when first written, UK legislation, for example, refers to unladen weight, kerb side weight <sic>, mass in running order, mass in service - all very similar, but very often with slightly different meanings which on
  19. I was quoting the actual terminology as stated in the regulations. The acronym is not strictly in line with the terminology, but I think we all know what is meant.
  20. Various UK Statutory Instruments with regard to Road Vehicle Construction and Use Regulations refer to 97/27/EC and 1230/2012/EC, both of which use the term "Technically Permissible Maximum Laden Mass" which we normally abbreviate to MTPLM.
  21. To be strictly correct, according to the wording of legislation, the terms MTPLM and MRO apply just as much to the towing vehicle as they do to the trailer. It's just that conventionally one doesn't refer to MTPLM when talking about the towing vehicle.
  22. It won't be Volvo that messed things up, but the DVLA when they issued the V5c.
  23. Revenue weight is only of any consequence for taxation purposes of commercial vehicles. What counts on the V5c is item F1 (Max. permissible mass).
  24. We have a local by-law that garages must be not be used for any other purpose than to park cars.
  25. I'm not knocking the multicar households but I worked out that for me it was more sensible to go in the opposite direction. I used to have a dedicated towcar and a smaller car for shopping, etc., but then I worked out that the extra tax, insurance and maintenance for the second car was more than the extra fuel cost if I used the bigger towcar for all trips, so I sold the runabout. Besides, now that the one and only car has its place in the garage, which the other didn't, I never have to scrape the ice or defog the windows in winter before taking the car to go shopping.
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