1975-1977 1760cc Norton Drag
Racer 'Hogslayer'
Tom TC Christenson and his awsome Norton-powered
ruled America's quater-mile drag strips in the
mid-seventies. After successes with a fuel-injected
750cc Norton-powered dragster, the racer from
Kenosha, Wisconsin rolled out his first double-engined
monster in 1970. TC called it Hogslayer to taunt
his Harley Davidson rivals and began to notch
drmatic results.
In 1972 the snorting Norton won two nationmal
showdowns in New Jersey and California, humbling
established HD and Triumph aces and setting
a new standing start quarter-mile record at
8.52 seconds.
Christenson went on to win every major drag
race in America, flying the Norton flag in front
of huge crowds and on TV. Hogslayer also made
guest appearances in Britain, running Europe's
first sub-9 seconds quarter-mile at Silverstone
in 1974.
In 1975, TC blasted to four sub-eight second
runs in a row at California's Ontario Raceway,
being narrowly beaten into the 'sevens' by a
3.2 iltre rival with three Japanese four-cylinder
engines.
Technical input on Hogslayer, including transmission
design and frame building, was mostly by John
Gregory. He owned Sunset Motors, a Norton agency
in Kenosha, before selling the business to Christenson.
The machine was continually developed with
the latest innovations in drag racing and ever-wider
rear tyres to make use of an astonishing 300
+ horsepower. The paired Norton Commando engines
relied on many standard parts but were adapted
to run on nitro methane fuel.
Starting out at 750cc each, they were expanded
to 880cc by a Sunset Motors conversion and magneto
ignition gave way to a modern electronic system.
One factor in Hogslayer's success was engine
reliability, which saw TC survive elimination
rounds to reach the final when rivals were sidelined
by mechanical failure.
Engine - Two 880cc air-cooled overhead valve
parallel twins, four 1 5/8in Hilborn fuel
injectors, electronic ignition
Transmission - Chain primary drive, hydraulic
slider clutch, two-speed semi-automatic gearbox,
chain final drive
Chassis - Tubular double cradle frame, telescopic
fork front suspension, disc brakes
Wheels - 18in front, 10.5in Cragar rear
Power - 320 bhp @ 7500 rpm
Weight - 475 lb (204 kg)
Top Speed - 180 mph
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