When a motorcycle is on the pipe, it is running at the rpm that gives maximum horsepower. He was really on the pipe during the first five laps. Pit board signs can be used to show a rider's position, how far he's ahead or behind, or to encourage him or even to remind him to breathe. When the terrain is soft or damp, deep channels or ruts can be formed when the rear tires dig through the dirt. Ruts can force riders to take certain lines through a corner, or limit them to only one line, making passing difficult.
Ruts can get deep enough to completely stop a motorcycle.
There were so many bad ruts, I couldn't pass. When a rider takes his feet off the foot pegs and throws them to the back of the motorcycle while it's airborne over a large jump. This makes the rider resemble Superman while flying. Wash out - When cornering, having the front wheel break loose due to a loss of traction. This usually results in a crash.