Finally got around to building my oval. 8x16, 37,35,33,31 foot lap lengths, 10 cm lane spacing, 6 inch gutters on corners, 4 inches on the straights. TrackMate deadstrip scoring. Computer power supply with 3.3 volts for yellow flag laps and 12 volts for green flag racing. Rustoleum Chalkboard paint surface. Unable to post any pictures here, but they are viewable over on Slot Car Illustrated. I wasn't able to cut and paste them over. Look in routed track thread titled Went to the lumberyard today.
TOJ