Originally designed by Karl Sommer and released by Ludwig & Mayer in 1930, together with Motor, a set of caps and numerals with “speed lines”.
Revived by Letraset, with some minor differences (e.g. bar in ‘e’ in horizontal, ‘c’ bottom is angled in the other direction, ‘q’ descender has semi-serif). Comes with an alternate narrow ‘S’. Extended with the lighter Dynamo Medium (Colin Brignall, 1977), Dynamo Shadow (Alan Meeks, 1977), Dynamo Chrome (Alan Birch, 1982) and Dynamo Condensed.