While his brother was flitting between Jurby airfield and Ballagarraghyn, Jamie Cringle was sealing the 600cc championship on Sunday.
Dave Molyneux and Dan Sayle are now within a single point of lifting another Isle of Man Centre ACU sidecar title.
They should confirm that at the final race meeting on September 19, when they will become the first duo on a twin-cylinder machine to become Isle of Man champions since Eric Bregazzi and Jimmy Creer did it on an 840cc BSA-powered outfit in 1976.
Brothers Ryan and Callum Crowe set a startling pace on the damp-in-places track on Sunday afternoon, winning the opening sidecar race by 9.3 seconds from Moly and Sayle’s 890 KTM in race one.
Former champions Craig Melvin and Stuart Christian were a steady third throughout, followed home by Dave Quirk and Karl Schofield.
Race two appeared to be going the same way after the Crowes powered past Moly’s fast-starting twin at the end of the back straight on lap one.
But they perhaps put too much faith in the steadily improving grip in their tyres and spun at the bus stop chicane midway through the six-lapper, shortly after setting the fastest lap of the day at 88.073mph on the howling Triumph-triple.
Molyneux and Sayle galloped into the lead for a second time, with the Crowes in hot pursuit.
The battle kept the crowd fixated until the two crews fired over the finish line a blink of an eyelid apart - with wily old fox Molyneux 0.247 of a second ahead.
Melvin and Christian were again third, but there was an impressive fourth place finish for Michael Jackson and Dan Sayle’s 17-year-old son Jake in fourth spot, having suffered electrical issues in race one.
Jamie Cringle won the first of the 600cc races on his 675 Triumph by a fraction over four seconds from Marcus Simpson’s Yamaha R6, with Paul Cassidy a good third and Mark Raine winning a five-bike dash to the line for fourth.
Cassidy gave it his all in race two on his Island Fuels Yamaha R6, setting the fastest lap of 88.594mph, but Cringle got the better of him by 0.346 of a second.
At the lower end of the leaderboard, former motocross champion Kyle Casement (a first cousin of the Cringles) and the returning Sean Murphy looked tidy enough in sixth and seventh.
Simpson again dominated the novice/clubman class, setting his stall out for his proposed Manx Grand Prix bow in precisely 12 months time, but he is simply the star pupil in a long list of fresh talent emerging through the race school and novice ranks of Andreas Racing Association’s regular club meetings.
Marc Colvin headed the single, twin, triple and 700cc twin classes on Rob Brew’s 650 Kawasaki.
Joe Yeardsley followed him home in the latter of those, producing a very impressive ride to hold off the experienced Dean Osborne for the pre-injection 600cc class honours.
Club chairman Neal Champion sealed the 250cc two-stroke class title and also won the post-Classic on his 750cc Kawasaki.
Laurence Cummins edged away from the leading 500cc four-strokes of Norman Kneen and Rhys Callister to win the combined event on his 750 Honda VFR that is now classified as a classic. Alex Galloway of Peel and Aaron Redmond of Ballaugh were the leading riders in the singles class on their RS125 Aprilias.