The standard chain cake is replaced with a large chain with 130 teeth, connected to the rear wheel with 15 teeth, creating a high truyen ratio. The backpacks are also made larger so that each step is more spaced. The hood of the vehicle is reversed so that the driver can get closer to the wind shield of the vehicle running in front. The body is designed with wood to avoid overheating and uses round pipe tires for optimal performance.
The front of the vehicle is equipped with a large rear wind shield to protect the bicycle from air disturbances, significantly reducing resistance and allowing it to reach speeds that a bicycle cannot achieve with only human resources.
According to information from Amusing Planet, Meiffret narrowly escaped death in 1952 while participating in a bicycle race in Montlhery (France). While cycling at high speed, his bicycle broke and took him up in the air. Meiffret fell to the ground, rolling for hundreds of meters and sliding another meter before stopping. His body had serious scratches and was covered in blood. Doctors discovered five separate cracks in his skull, but miraculously, Meiffret survived.
After that accident, Meiffret spent many months recovering, struggling not only physically but also mentally. To find peace, he accepted the miserable life of a monk. During this reflection period, he continued to improve bicycle designs and wrote his first book.
In the fall of 1961, Meiffret set a new speed record of 186.6 km/h on the highway in Lahr (Germany). This achievement motivated and created the premise for the next record break, completing the race at a speed of 204.937 km/h.