The outer shields of the throttle and mixture controls need terminating on the engine close to the carburettor leaving the inner core to operate the carb levers. This needs some sort of bracket fabricating which was the task for today. One standard way of doing this is to bolt the bracket between the carburettor and the sump which is the approach I have adopted. First holes for the air intake and the attach bolts and a relief hole for the throttle arm to match the depression in the sump were cut out of a flat sheet of 0.071" 4130 steel using the CNC router (top of the picture). Then the routes of the cables were marked onto the sheet and the positions of the cable outer support tabs established. The tab for the mixture cable is at the very bottom of the picture and the tab for the throttle above and to the left. An angle grinder was then used to cut along the sides of the tabs and they were bent up into position. The throttle cable operates at right angles to the bracket base but the mixture control is at an acute angle of about 75 degrees. Next two pieces of steel were welded between the tabs and to the base to support them. Then the carb was positioned on the bracket and the vertical position of the cable runs marked to give a straight run and two pilot holes were drilled in the tabs. I've ordered a pair of "cable safes" from ACS which will clamp the outer cable through the holes in the tabs. The pilot holes will be enlarged to fit these when they arrive. I'm using bare end control cables as these can be cut to exact length. Finally some lightening holes were cut out to save a bit of weight.The view of the bracket is from the bottom of the engine with the front at the top and the cables coming in from the bottom.
