James Dabill and national sidecar trials ace Robin Luscombe set the standards at Emmott's Farm at Silsden where Yeadon-Guiseley Motor Club staged their third closed to club championship trial.
Seventeen-year-old Dabill cleared the entire trials course without penalty, probably a legacy of an intense ACU Training School weekend, or a sharpening up for this Sunday's British championship event in South Wales.
Challengers were Andrew Carter and James Noble. Luscombe was also sharp at Emmott's dropping one mark on the eighth section on lap two.
The Keighley man was on two wheels though, not his usual sidecar outfit so the lost mark was inevitable.
Only 15 competed on the hard course but 41 were contesting the clubman class and there were nine very young competitors in the small wheels division.
The club will run another of their popular Beginners Trials at Norwood on Saturday afternoon over a course appropriate for newcomers to off-road events.
Dabill doubled up on his Saturday victory by winning the Bradford Motor Club's Yorkshire championship trial at Howden Wood, Silsden, on Sunday, beating Skipton's Aran Drachenberg and Guiseley youth Edward McIntosh.
Best Youth was York's Thomas Hick, while Skipton's Richard Pearson headed the clubman category riding his Beta machine.
l Ilkley decorator Graham Tales won the Blue Bar Trophy two-day trial staged by the Richmond club at Wensley riding an old but immaculate Bultaco machine, beating younger brother Andy who finished eighth overall.
More than 125 riders contest the annual event.
Skipton motor engineer John Maxfield took the Unit class from Mick Grant and Steve Maxwell. Best of the ladies was Kathryn Wardle, who was well ahead of Nichola Foote and Becky Rennison.
Londoner Keith Munns fell between sections and damaged a shoulder which entailed a visit to the Friarage Hospital at Northallerton, where he suffered a heart attack while being anaesthetised. Keith was reported to be recovering well.
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