alko tow balls

No way of fitting a longer tow bar as far as I am aware.

The EC Directive 94/20/EC (The standard that all towbars are designed to.) states that the tow ball height should be between 350 and 420mm from the ground with the vehicle in a 'laden' state.

What height is yours? What tow vehicle, model, year etc?

Suggest you check whether jockey wheel is engaged in " security" slot when wound up - as this can affect the distance - also that the jockey wheel lifted right up inside the "A"frame cover.

Alan, the answer to your question is probably no.  There could be a number of causes for your jockey wheel catching - which it should not.  The simplest is to check that your jockey wheel is locked in as high as possible in the A  Fame; there should be only about a third of the wheel showing below the A Frame.  Check if your tow hook is fitted at the correct height; the centre of the ball should be between 350 - 420 mm high (vehicle fully laden, but not with caravan attached).   You say you have checked weights, does this include the noseweight which should be the lower of either the maximum on the tow hook of the caravan or the car's limit; mine is 100kgs max but I met a guy on holiday whose car limit was only 50 kgs..  When you attach the caravan does the car suspension sag more than a  couple of inches; if so maybe you need suspension assistance.

(See a couple of folks have replied whilst I was typing, luckily we are singing from the same hymn sheet!)

Thanks for replys.jockey wheel is up in the correct position.i had the caravan sold to me by ebor caravans who would not sell me some caravans as they where to heavy for my car and have the docs to say its a match.maybee ill look at the suspention .thanks again

The total weight of the caravan is immaterial in this instance. What might be material is what the permitted load on the tow car ball is and what the caravan nose weight is loaded to.

i have nothing in front of the caravan to make it heavy.one caravaner told me it was to light as when he helped me hitch he said i shouldnt be able to raise it with one hand so easy.sorry im new to all this how do i find the permited load of the ball.i think its the car rather than the van

For the caravan most tow hitches are rated for 100kg. The limiting factor is usually the tow cars permitted tow ball load. It shouls be in car handbook. If you have full car model and year details somebody may be able to advise. 

To check actual nose weight I use bathroom scales, a piece of wood to spread load on them and a piece of wood cut to length to rest on hitch head such that tow hitch is at same level as when attached to car.

ive just measured the height and its 440mm from ground to centre of ball unladen.so bye the time i have three adults and a child in it will lower more than it should be.

It would help us all to help you if  we knew what your towcar and caravan is.

citroen c4 1600cc.110 bhp.

caravan eddis explore 6 berth.