Cycle News

Cycle News 2013 Issue 24 June 18

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

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RACER TEST P92 NORTON MANX 500 DAYTONA rards or Devils Elbow, however, the plunger-sprung Garden Gate frame was much less at home, weaving and hacking about if I tried to drive through these bumpy turns with the power hard on. At first I thought I might remedy that by simply torquing down the central steering damper - un- til I discovered that it was already at its tightest. The fact of the matter is that the extra weight and power of the double-knocker Manx engine was really too much for the venerable plunger chassis when they were introduced to each other from 1950 onwards, especially on twisty tarmac-laid turns. The sweet-handling McCandlessbred Featherbed frame changed all that, though – which is probably the reason that, doubtless prompted by Harley-Davidson, the AMA wouldn't let Norton use that until 1954. The problem is that the Norton's plunger frame has no rear damping, only springs inside the plunger boxes, which made it terribly unstable over the bumps, pogo-ing the back wheel all the way around and heading toward a terminal tankslapper if I hadn't had the good sense to ease the throttle, and let it all recover. Okay, Daytona maybe wouldn't have seen the same problem arising, but my admiration remains sky high for those brave men like Geoff Duke and Co. who won TT races on such an evil-handling bike. And the guys like Klamfoth, Mathews and their cohorts who raced these bikes to such serial success were serious heroes, too. It's ironic in a way – we think of Manx Nortons being the ultimate single-cylinder Grand Prix racer, thanks to Duke's succession of Grand Prix victories and trio of World Championships aboard the Featherbed-framed bikes. But in spite of handling on tarmac like the Garden Gate it was named after, on the Daytona Beach Course its predecessor turned out to be the ultimate sand racer! Who'd have thought it? CN

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