The saddle clamps have now arrived to fix the bike supports down but, this is being done on independent boards so they can be removed if the van is needed for other purposes
This is one of the bikes in the supports so I can measure the distance they have to be fixed apart, also, the distance from the center of the handlebar to the end needs to be taken into account so the bike will be dead perpendicular in the van and no stress is being put on the spokes
See, this is the thing, I could just clamp the bike supports to the van floor, but, that would render the van useless for carrying other stuff so, they have to be mounted to a removable board, just about to take the measurements then fetch the relevant boards
The components have been cut and assembled, now just need a light ply clad, son and I cycling starts next weekend

Blimey, nearly 2500 posts 
That happens If you copy an image directly from that image hosting site, to get an image permanently embedded you have to go to the trouble of saving it in an alternative format and post copy it from there.
The price of a free meal
all this embedding and formatting, should have got folding bikes and slip them in the back of the car
Have you never heard of ergonomics, folding bikes!!! you’ll be expecting shopping baskets next
the shopping baskets come free with the bikes
Ok, we are all clamped up, now to stop the bikes moving laterally without the hassle of bungee ropes or ratchet straps. If you go in your wardrobe and look at the hanging rail you will see at either end a u shaped clip with the eccentric shaped rail inserted well, the same installation will be done in the van, the rail having two pipe clips screwed to it in the same position as the bike seat pillar posts so, once clipped on to these, the bikes wont be able to move sideways, simples
Got the rail and fittings from from Screwfix, the 32mm spring clips have had to be ordered online
Clips have arrived, photos to follow, two perfectly secured bikes 
Bracing bar done, clips on rail
Rail clipped to seat pillars
Rail supports marked at ends
Rail supports fixed to ply lining
Rail fully functional
It is now a 2 minute job to load one bike or 2, no bungees or ratchet straps, job done
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Took the van today, its got a port on top of the dashboard which a cradle is plugged into, this houses the sat nav

Finally got round to commissioning the Carrera with the twist grip throttle, done a few smooth miles

Feeling legal today, about to load the Kalkhoff into the van, two minute job.
Design cock up, when i set the distance for the support bracing rod, it was done with two Carrera’s in the van with the front wheels tight against the bulkhead to prevent forward motion under braking. The Carrera’s have 27.5" wheels, the Kalkhoff has 26" wheels so is a shorter wheel base so, when clipped into the bracing rod, the front wheel is a couple of inches short of the bulkhead, this allowed the bike to move forward which I heard from inside the cab.

Before I could proceed I had to pack the gap out with the case for the Sat Nav

To enable a combination of Carrera’s and the Kalkhoff To be carried, the bracing rod needs to be left where it is and a spacer block built for the shorter Kalkhoff.