Because the real wheel does not require cross ventilation, we made discs to cover them. There is 3" cover to access the tire valve which has 8-32 screws into threaded inserts pressed in from the back side. The two discs are connected together with 1/2" diameter aluminum spacers which are located to either side of the three spokes to ensure they don't rotate. After mounting new Bridgestone tires (110/70 ZR17 in front, and 120/70 ZR17 in back), I was pleased to find run-out of less than .020" at the tire surface.
In all, this years run will be for confirmation of my new frame and welding skills, and refinement of some of the minor items such as crankcase evacuation, increased valve lift, and intake and exhaust length, and the addition of truly round wheels and the rear discs.