Whats the ideal height to the centre of the towball, just had a detachable witter fitted to our new type Vauxhall Astra, seems abit high to me at 435mm, cheers.
When car and van are loaded and hitched up, the van should be either level or slightly 'nose down'. Under no circumstances should the van hitch be pointing upwards.
Bertie.
I would agree with the previous answers but the only true way to find out is to set the correct noseweight on the caravan first, hitch up then and have a visual look yourself as more than likely the caravan will look level.
Quote: Originally posted by tango55 on 12/1/2015
I would agree with the previous answers but the only true way to find out is to set the correct noseweight on the caravan first, hitch up then and have a visual look yourself as more than likely the caravan will look level.
With the van hooked up in travelling trim, drop a spirit level just inside the doorway - this will ensure whether the van is tilting upwards at the towball. If not, and visually not excessively tilted forwards, then everything should be OK.
If there is too much sagging of car/caravan at the hitch, the jockeywheel, even in its raised position, could hit things like speed humps.
Bertie.
Grampian91, if you've had the van for 15 years you are obviously very satisfied with it. So, if changing it is out of the question, renewal of the suspension rubbers would be an economical option if the "lean" went in the wrong direction. Do you already have/or can you fit shock absorbers, which would help to delay any repeat of 'sinking'.
Bertie.
Its not a diy job to change suspension rubbers on Al-ko axle, you have to remove axle & get it reconditioned. They normally last life of caravan. Mines still ok & its 1985. Fashionable to fit shock absorbers nowadays but we seemed to manage ok without them before. Australian off road caravans use Alko axles without shock absorbers which should tell you something.
Our 2012 Swift does have shock absorbers, whereas our 2006 Coachman did not (similar size and weight vans). I have to say that the Swift recovers more quickly after passing over a wavy piece of road - where M-way lanes change and use the hard shoulder for temporary road works is one good example.
Concerning renewal of suspension rubbers, I wasn't suggesting this should be a DIY procedure.
Bertie.
Quote: Originally posted by The 2 Tops on 14/1/2015
Grampian91, if you've had the van for 15 years you are obviously very satisfied with it. So, if changing it is out of the question, renewal of the suspension rubbers would be an economical option if the "lean" went in the wrong direction. Do you already have/or can you fit shock absorbers, which would help to delay any repeat of 'sinking'.
Bertie.
Yep its suited out needs, WWe almost changed it once, Bout the thought of spending £4000 + ours as P/Ex made us think WHY?
The newer van offered very little extra for all that money.
1/2" drop is nothing. But i will keep an eye on the rubber to make sure its not going to fail.
Its obviously worth very little now so. Maybe time to start looking for a newer one?
Quote: Originally posted by The 2 Tops on 14/1/2015
Do you already have/or can you fit shock absorbers, which would help to delay any repeat of 'sinking'.
Bertie.
No. Shock absorbers won't make the slightest difference here. They are shock absorbers, nothing more.
Quote: Originally posted by freeatlast on 14/1/2015
Quote: Originally posted by The 2 Tops on 14/1/2015 Do you already have/or can you fit shock absorbers, which would help to delay any repeat of 'sinking'.
Bertie.
No. Shock absorbers won't make the slightest difference here. They are shock absorbers, nothing more.
But they do reduce the amount of shock loads the suspension units otherwise have to absorb without secondary assistance, which comes back to reduced wear and a longer life. The rubber suspension units were designed with the intention of also providing shock absorbing characteristics, so why else would they have been later added to the spec of many van chassis assemblies?
Bertie.
Quote: Originally posted by The 2 Tops on 15/1/2015
Quote: Originally posted by freeatlast on 14/1/2015
Quote: Originally posted by The 2 Tops on 14/1/2015 Do you already have/or can you fit shock absorbers, which would help to delay any repeat of 'sinking'.Bertie.
No. Shock absorbers won't make the slightest difference here. They are shock absorbers, nothing more.
But they do reduce the amount of shock loads the suspension units otherwise have to absorb without secondary assistance, which comes back to reduced wear and a longer life. The rubber suspension units were designed with the intention of also providing shock absorbing characteristics, so why else would they have been later added to the spec of many van chassis assemblies?
Bertie.
Rubber suspension units do provide some shock absorbing characteristics just as the springs on a car do, but separate shock absorbers provide a measured dampening effect.
I doubt, in actual use, the shock absorbers would have even the slightest effect on the long term compression of the rubber in the suspension system unless the van is used for huge mileages year in year out.
If you want to reduce the compression effect, during winter support the axle on axle stands so that the wheels are supported off the ground.