Complex sentence: He had joined Panhard & Levasor where he was techincal manager in 1902 and was named the riding mechanic to Charles Jarrott when he won the 1902 Circuit des Ardennes race.
Split into simpler sentences: He had joined Panhard & Levasor where he was techincal manager. He was named the riding mechanic to Charles Jarrott when he won the 1902 Circuit des Ardennes race.