The ends of the tube were sliced and a drilled tab brazed on to fit the upper shock mounts.

The frame was put in place on the bike without the seat to ensure that it would fit and that everything was square.

With the seat back in place, two bits of 14mm pipe were cut and bent to form the grab rail and the front cross piece. Both these parts had radii filed in the ends to fit neatly against the side of the existing 14mm tube.

To finish the loading area of the rack two 12mm pieces of piece were cut and filed to fit and then brazed in place.

The rack was a good fit but was resting on the indicators at this point.

18mm diameter threaded stand-offs were made to move the indicators out from under the rack. The stand-off was 53mm long. It had an M6x1 hole tapped in one end and an external M6x1 thread on the other. The external thread was 6mm long.

The indicators were held with a single screw and a boss which also contained the wire. A plate was machined in 5mm steel. Cut and drilled as shown. This part was designed so that the indicator screw would hold the rack to the stand-off. The slot would allow the rack to be removed  without breaking the wire.

To braze the plate in the correct place the rack was assembled on the bike and the plate was clamped in place. Then the rack was removed from the bike and the plate brazed in the hearth. The process was repeated on the second side.

This photo shows the parts assembled. The stand-off secured the rack to the rear wheel arch and also provided an outboard mounting position for the indicator. 

This rack was painted in black to finish.

It was a good fit with my work bag.