I drive an A frame wagon and drag, and I’ve finally got round to taking a few pictures showing how to hitch up.
I’ve got a Ringfeder coupling and a safety feature of these is that when the drag is uncoupled, the coupling closes, to prevent the lickle childrens from sticking their greasy mitts where they shouldn’t.
So, the first thing to do is to open the coupling by first pulling out the safety pin (arrow on the left) and holding it out, while at the same time pushing up the lever (arrow on the right) to open the coupling:
The open coupling then looks like this:
The A frame is set up and held at the ride height of the unit by a couple of adjustable springs (arrow):
This valve (arrowed), releases the brakes on the front axle:
This can be quite useful if some inconsiderate, vacuous, myopic twonk blocks the drag in and you have to come at it from an angle to hook up. Once the hitching eye enters the jaws of the coupling, the axle can turn as the eye is guided into the coupling. This prevents any unnecessary stress on the coupling or the A frame.
If the drag is empty, it is possible to pull the axle round by hand to get a better coupling angle, if things are really tight. If loaded, then a ratchet strap attached to the A frame and then onto the unit will usually do the job.
In these circumstances, it is usual to express thanks to the aforementioned twonk by applying a healthy portion of grease to the underside of the their driver’s door handle, or removing valves from 2 tyres (nobody has 2 spares 
)
To do a normal straight hitch up, just line the unit up with the drag and slowly reverse until the coupling engages.
In this picture, the coupling is not fully closed. The safety pin is not fully engaged:
However, a quick tug (fnarr, fnarr 
) will do the trick and the safety pin is now fully engaged and the coupling is fully closed:
All that remains to do now is to hook up the old umbilical chords and that’s it:
None of yer leg winding nonsense for me
An added advantage of the A frame is that it provides a handy spot to chain up the old Drahtesel (wire donkey) if weekended :
Wheel Nut:
To be honest a good lad on a drawbar outfit is a sight I could watch all day
Will reverse for beer at the routier of your choice, Malc
A frames ROCK 