Bikes on A frame and noseweight

The max weight on the alko coupling is 100kg i would suggest you carry your bikes on a towbar mounted cycle carrier, if your towbar limit is above 100kg or inside the caravan if possible 

The two bikes might weigh 60kg but will not impose 60kg at the towball. Depending on the actual location on the A frame may be 40 or 45kg. I suppose that using quick release on front wheels and seat saddles might allow removal to reduce weight further. Until the van is loaded it is difficult to be sure what you are dealing with but realistically you may struggle with two bikes I suspect. 

I caution you to consider where the rear corners of the tow vehicle go on full lock.

An extremely good point Navi and one that I had completely overlooked. On occasion I have reversed into side roads in order to change direction. That would have been impossible. And some tight turns going forwards could well be a problem. Well said. 

I would think it very difficult. Our U2 Cadiz tows best with about 90kgs on the hitch. To achieve this the only things in front of the axle are relatively light weight, such as the water barrels and waste master, plus kettle toaster and such like under the front seats. A plastic box with any heavy items from the over head lockers is also on the floor.

Therefore to offset a 60kg load close to the hitch would require something fairly weighty close to the rear. Plus probably not being able to carry anything, as we do, in front.

Also, as mounted on the A frame they are part of the weight of the van, I would have thought you in danger of exceeding the maximum payload, unless you carry very little in the van.

I'd suggest the OP looks at the fact that ( IMO ) most caravans he has seen such set ups would have been on none Uk caravans. A much longer A frame and possibly able to take the weight of two bikes in that position.

If I could advise my experience's of this, 

Roof mounted : Dirty bike on top of clean car. ?

Boot mounted : The weight of which dented my Boot. ?

Towbar mounted : Ideal if tolerances allow. !

A frame mounted : again ideal if tolerances allow. !

I have a in the past utilised all of the above and do still have a MAXXRAXX 4 bike rack that fixes behind a bolt on towball and can be used solo or when towing ( Tolerances allowing ).

Happy caravanning.

Can someone more learned in these matters explain how a bolt on bike rack fits in with the type approval regulations with regard to bolt on tow balls?

Probably ask Witter for example. https://www.witter-towbars.co.uk/accessory/ZX89

Based on my experience with a Bailey I would say that it would be impossible to carry that load on the A Frame. It would need a very big counterbalance at the rear of the van which could lead to problems with payload and stability.

We tried several options and ended up with two Thule carriers on the roof of our car (along with a wind surfer!). Funnily enough, we just got them out of the loft to sell on as we no longer have bikes.

Navigateur is absolutely right.

I’d suggest a roof mounted bike rack personally.