How do I race against the computer? Jovi Mirkovic November 02, 2017 18:25 The Rokai has a race mode program to allow you to race against the computer. Follow the instructions below to set up a race. Related articles The strokes aren't being recorded How can I measure my heart rate when working out? An introduction to the Rokai I can hear a scraping sound when pulling on the pull cord. Which exercises can I perform on the Rokai? Comments 0 comments Article is closed for comments.