Time Trial Cadence Test. The easiest way to determine your optimal cadence is by performing a time trial multiple times, using a different cadence each time. First, determine a course on local roads that takes about 10 minutes to complete. This route will be the same for each time trial.
The word Negra (and Negro) literally means Black in English. In this case it refers to a dark beer or ale, so Dark is the best translation. The word modelo literally means model in English.
Founded in 1849, the city was renamed Ciudad Porfirio DÃ­az in 1888, in homage to President Porfirio DÃ­az. It reverted to its original name following the Mexican Revolution. In Spanish Piedras Negras translates to black stones â a reference to coal deposits in the area. Across the river, coal was formerly mined on the US side at Dolchburg, near Eagle Pass. This mine closed around 1905, after a fire.