(instead of finding images here, you'll find links as the images are to big to fit)
Changed picture links into images.
As my R100CS had some hard work keeping up touring with modern bikes, I bought a R1150R.

Probably would have bought a GS, but that wouldn't fit in the storidge below the appartment.
Early this year I completed the conversion to real paniers.
Not too soon, as on 2 sept a truck demolished my R100CS.
what's left of it:

My CS has real paniers, a Schuberth C3 would fit with room to spare (both sides).
The R1150R came with the factory 1.5 handbag, even the right one is to small to fit a Schubert C3.
On my holidays I not only sleep in hotels, but go camping as well. (did 14 days UK last year on the CS)
To get real paniers on the bike I first had to correct the IMHO design fault by lowering the exhaust.
To do that I bought the kit from Zach: Artikel-Nr. R21TKO

(I didn't use the extra bracket intended for use with RT paniers.)
Now the original rack had to go, and so I lost my rear rack.
As the GS and R have almost the same frame I ordered sideracks from Touratech designed for a GS with lowered exhaust : Part number 01-051-0012-0
These racks almost fit. When the rear tab is fitted on the frame either the front top or the front bottom tab can be bolted on the frame/footrest-subframe.

To get the paniers as far away as possible from the exhaust, I choose to cut-off the front top tab and after repositioning reweld it.
As I still wanted a rear rack, I bought on from Hepco&Becker : 650631.0101
This rack is designed for the R1150R but not in combination with the Touratech side racks.
Normally the front mountingtabs of this rack are on the inside. Mine had to be on the outside to go with the side racks. So I cut them off and placed them on the outside.

Now the frame was too wide and I had to bent the legs inwards to fit the size of the R1150R's chassis. By bending the legs, the rear of the rack got more narrow too. So I couldn't use the supplied spacers (Alu bushings).
I had to make new spacers for the rear mounting points.
Between the chassis and the H&B rack 20x40x6mm with two holes for the screws.
The H&B rack used both the mounting screws on each side.
The Touratech rack uses only one screw to mount the rear.
So I used a long screw in the top hole and a shorter one for the bottom hole.
To accomodate the head of the internal hexagon screw, the spacer between the H&B rack and the Touratech rack is 10mm thick (also 20x40mm). It had one hole for the thread of the long screw, one hole for the head of the screw.
Now the side-Paniers:
I choose the Touratech "Zega-pro and S", 38L version Part number 01-050-0620-0.
To mount these paniers, you'll need the mountingkit Artikelnummer 01-053-0010-0.

I also ordered the locks (set of 4, 2 per panier) Artikelnummer 01-050-0874-0 (you'll have to set the language of the site to German to see the page, the english page fails)
To get the paniers as far from the exhaust as possible the rack lies on the plastic edge.
This causes the mountinghubs to partly lie on the plastic. To avoid problems, I glued (kit) a PVC sheet (3mm) to the back of the panier to flatten the surface.

On the picture you can see that the upper pipe of the left-rack is not straight. This is for reaching the seat-lock of the GS. If you think of using Touratech's rapid-trap system, you'll need to make it straight.
The Touratech rack comes with a balancebar, connecting the left and right rack at the lower-rear end.
As the racks are further apart as the manufacturer intended, the balancebar needs to be larger. At both ends, I cut off about 1cm, than welded a plate on and created new holes.
The racks are now so far apart that the blinkers can stay in place and the relocation set is not used.
The topbox: I bought the H&B Junior TC45 (fits 2x Schubeth C3), it comes without the optional lid-rack.
One thing to do:
The footrest for the passenger are extended to carry the factory paniers.
These extensions have to go as they intefear with the Touratech paniers.
For the moment I ride without the footrests.
Images of the completed bike (so far):

front-left

front-right

right side

from the seat

rear view (blinkers not modified)
More modifications to do (or having them done), not in a particular order:
Springs, converting to progressive springs.
Fuelcapacity: increase with about 6L (I wish) to extend the range to 340km until reserve (as my R100CS did)
Windscreen: getting a screen to replace the factory-poststamp.
As I'm not a regular here, and probably won't be, you can find me on the UK forum:
http://www.bmbikes.org.uk/Forum/
My name there is "peter" with the sidepanel of my R100CS as avatar.