It has a slipper clutch. yes it was fat, pretty humid in there even more so than from the day before. I had leaned it up and bumped up the timing and still on the rich side. Part of was the fact that it was not hooking up to load the motor a little better, it would of burnt a little cleaner. I was 2 mph slower than Calvin that won it 10 ft ahead of me. Friday I was 1 1\2 mph slower than Russ just 3 ft back. The chevron style tires really worked a lot better.
Hope your dad is doing better