Devlin's one of my childhood shows that was so cool! Of course when it first aired on ABC, the series was opposite two prehistoric shows (Valley of The Dinosaurs; CBS & Land of The Lost; NBC). It would've been a sweep if ABC had placed Korg; 70,000 BC @ the 9:00 slot.
Sure, I enjoyed the motorcycle action, even though my brother teased me a lot for liking that show over the dinosaur series.
Never saw Devlin again until 1986 when USA had their Cartoon Express in the mornings. I got re-acquainted with my favorite motorcycle series.
Also liked Mickey Dolenz voicing Todd, the one who would always get squirted by the elephant!
Little piece of trivia; part of that theme song would later be used on Captain Caveman & The Teen Angels.