Viewing 40 posts - 1 through 40 (of 71 total)
  • Why don’t caravans have four wheels then?
  • kayak23
    Full Member

    These days especially. Monumental things, longer and longer, swaying about, overtaking me at 70-odd.

    Some do have four wheels admittedly, but they still put them all right next to each other under the middle and shit.

    Look, this ones massive and only has two wheels, even with what must be a very heavy and unstable chimney.

    Why not four wheels then?

    Drac
    Full Member

    It’s a pivot point for turning.

    wrightyson
    Free Member

    Because its essentially a trailer.

    hols2
    Free Member

    Some do have four wheels admittedly

    You have a thesis and and anti-thesis, now you need a synthesis.

    WEJ
    Full Member

    Reversing a four wheel caravan/trailer with an axle at each end is really difficult, as you have two pivot points to cope with. Probably be great otherwise.

    Poopscoop
    Full Member

    Kayak, you unpatriotic bar steward!

    Baden Powell conquered the world in a 2 wheeled caravan and will do so again once the UK achieves Nirvana!

    #4wheeltraitor

    spooky_b329
    Full Member

    Because caravans are built to be light, adding another axle is probably 150kg which would put it above what most SUVs/large saloons can tow safely.

    Also a twin axle caravan is very hard to manoeuvre by hand especially if you need to turn it due to tyre scrub, which means lots of people add motor movers, which is even more weight.

    P.S That ‘chimney’ is a stabiliser that prevents yawing (sway) of the caravan…

    … 😉

    kenneththecurtain
    Free Member

    Can you imagine the chaos if caravan owners were suddenly unleashed on the world with drawbar steering trailers (like wot tractors use)?

    Half of them can’t even reverse a single axle trailer, it would be carnage.

    twonks
    Full Member

    Setting up on uneven ground may also cause some hilarious moments issues

    kayak23
    Full Member

    Nah, still think a system like that trailer up there would solve more issues than it creates. For that reason, I’m out.

    trail_rat
    Free Member

    Nah, still think a system like that trailer up there would solve more issues than it creates. For that reason, I’m out.

    You have clearly never had to maneuver a drawbar steering trailer.

    Dual axle trailers are much easier to manuver than single axles if you have loaded it right. They are slower to turn so you get a chance to correct it.

    Single axle trailers tend to continue in the direction they have gone unless you draw forward again imo.

    But of course it matters little when some people cannot comprehend how to reverse with a trailer. I actually fully support the licencing for trailers.

    wwaswas
    Full Member

    Cost.

    Next question.

    kayak23
    Full Member

    Cost.

    Next question.

    Looking at some of the outfits folks in camp grounds have and the vehicles towing them, cost is not an issue. 😉

    martymac
    Full Member

    I come from a farm, and have decades of experience reversing trailers.
    In fact, i passed my bus test in a double decker with a trailer on the back.
    I would not feel confident reversing a trailer with drawbar steering.
    I will also point out, reversing a tractor with a trailer on the back is easier than reversing a car with a trailer/caravan, due to being higher up and having a much better view.
    Most car drivers would have great difficulty manoeuvring a trailer with drawbar steering imo.

    molgrips
    Free Member

    swaying about, overtaking me at 70-odd.

    That’s not a caravan design flaw.

    Caravans are pretty stable and easy to tow if you load them right. I’ve put a fair bit of effort and some money into getting mine well sorted, suffice to say that a lot of people don’t bother.

    Also I don’t think you’d be able to manoeuvre a four wheel trailer by hand, whereas with single axle it’s dead east and you can slot them I to small spaces or park them accurately by hand or with a small motor.

    ElShalimo
    Full Member

    I saw one last week in Austria. A BiMobil AX575 aka expensive Swiss behemoth.

    kayak23
    Full Member

    See now, that’s more like it. The majority of caravan places I’ve seen, you really don’t need to do much manoeuvring. It’s just like parking it on a drive.

    As mentioned above though, I suppose most issues with them fish-tailing come from bad loading but I saw several over the weekend where the rear suspension on the car was so compressed it was like a lowered and stanced car for a youth.😊

    Another set of wheels would remove that.

    Murray
    Full Member

    Wheels? Why not use some good old fashioned British ingenuity and invent the hover caravan?

    Murray
    Full Member

    Why not add some sort of active steering and perhaps a supplementary drive system?

    epicyclo
    Full Member

    Murray

    Why not add some sort of active steering and perhaps a supplementary drive system?

    It’s a great idea but it’ll never catch on… 🙂

    DickBarton
    Full Member

    Slap a VW badge on it and idiots will pay way over the odds for it!

    wobbliscott
    Free Member

    Molgrips is right…its a problem of driver skill and judgement…or rather lack of it. The boys back in the ’60’s who used to rally cars towing caravans seemed to have no issues hustling them at speed.

    trail_rat
    Free Member

    Molgrips is right…its a problem of driver skill and judgement

    Or….training.

    bentandbroken
    Full Member

    This video taught me a thing or two after a bit of a moment towing a car trailer a short distance (off of a rally stage, not on the road); https://www.youtube.com/watch?v=i2fkOVHAC8Q

    bikebouy
    Free Member

    There is still a 60mph limit when towing caravans in the UK right???

    Just checking..

    cheekyboy
    Free Member

    I once closed the M56 eastbound (2 lane section) with my very poor trailer driving technique, found a new job the following week, not for me.

    wwaswas
    Full Member

    There is still a 60mph limit when towing caravans in the UK right???

    on motorways. 50mph anywhere else with a National Speed Limit.

    johndoh
    Free Member

    Setting up on uneven ground may also cause some hilarious moments issues

    Although if they were also fitted with hydrogas suspension that auto-levelled that would be cool.

    wwaswas
    Full Member

    Fifth wheelers are probably the best solution but require a specific type of tow vehicle.

    fifth wheeler caravan

    Cougar
    Full Member

    Because roads have corners and bends. Next question?

    wwaswas
    Full Member

    What’s the difference between a corner and a bend?

    barney
    Free Member

    Monumental things, longer and longer, swaying about, overtaking me at 70-odd.

    I’ve witnessed caravans fishtailing at 70mph and pulling the cars towing them 360 degrees before exploding into matchwood. Not pretty.

    I think the legal limit for towing a caravan is 56mph. Can’t think why.

    trail_rat
    Free Member

    I think the legal limit for towing a caravan is 56mph. Can’t think why.

    No that’s hgv.

    molgrips
    Free Member

    I think the legal limit for towing a caravan is 56mph. Can’t think why.

    60 on motorways, 50 on single carriageway roads.

    Fishtailing is caused by a number of things – not enough nose-weight i.e. poorly loaded caravan; tyres too soft; also not helped by having a rear washroom and leaving the toilet full of water and/or sewage.

    My van needs 64psi in its tyres which is the max on the reinforced commercial tyres. I’ve got a large plastic tote box full of all the sundry bits and pieces like electrical cables and wheel chocks, and I can move this around to get the balance right. However since fitting a spare wheel under the rear and keeping a second gas bottle up front things are nicely balanced, and I’ve got air spring assisters on the car which helps keep it level. It’s really pretty good now.

    hols2
    Free Member

    What’s the difference between a corner and a bend?

    A bend is a section of road that curves.

    wwaswas
    Full Member

    and a corner is a section of road that bends?

    reluctantjumper
    Full Member

    RE: trailer years and competence.

    Don’t forget that anyone who passed their test before 1997ish, so most over 40’s who partake in caravanning, haven’t had to have any extra training whatsoever to tow these things. When the trailer test was first mooted the Caravan Club strongly campaigned against it as they could see their numbers dwindling as eligible towers died off. It’s the reason you can tow a small trailer up to 750kg on a normal license. So the vast majority of caravanners have never done any formal training about speed limits, safe driving methods, loading correctly or reversing skills. There is nothing inherently wrong with a single axle caravan, a lot of issues are caused by user errors, particularly poor loading.

    thisisnotaspoon
    Free Member

    I’ve witnessed caravans fishtailing at 70mph and pulling the cars towing them 360 degrees before exploding into matchwood. Not pretty.

    A34 northbound near Didcot last night.

    Ford mondeo (whats left of it, facing South) plus former 2 bed detached bungalow on wheels sufficiently battered that i couldnt tell if it was upside down or not whilst driving past southbound.

    Caravans are an extreme case for towing, they’re big but quite light and the cog isnt all that low.

    Compared to most stuff youd put on a trailer which tends to have a lower cog, higher density (lower moments of inertia) and less windage.

    I dont think licencing is the problem, it’s caravans. Towing something small and heavy like a boat or trailer full of waste is easy, and reversing with it is just a matter of practice. Caravans on the other hand are just big. And the bigger they are the more likely they are to crash.

    On the upside, i cant see many people bothering to do their towing licence just to tow a larger caravan so once the current owners are gone there’ll be a lot less on the road.

    johndoh
    Free Member

    We have reached Peak STW arguing over corners and bends.

    slowoldman
    Full Member

    I’ve witnessed caravans fishtailing at 70mph and pulling the cars towing them 360 degrees before exploding into matchwood attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhäuser Gate.

Viewing 40 posts - 1 through 40 (of 71 total)

The topic ‘Why don’t caravans have four wheels then?’ is closed to new replies.