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Triumph Daytona T100R

Make Model	Triumph Daytona T100R
Year	1967 - 74
Engine	Four stroke, twin cylinder, OHV, 2 valves per cylinder
Capacity	490 cc / 29.9 in
Bore x Stroke	69 x 65.5 mm
Compression Ratio	9.0:1
Cooling System	Air cooled
Starting	Kick
Max Power	29.2 kW / 40 hp @ 7200 rpm
Transmission	4-Speed
Final Drive	Chain
Front Suspension	telescopic forks
Rear Suspension	Twin Shocks, coil springs
Front Brakes	Drum, internal expanding
Rear Brakes	Drum, internal expanding
Front Tyre	3.25-19
Rear Tyre	4.00-18
Wheelbase	1360 mm / 53.6 in
Wet Weight	175 kg / 386 lbs
Fuel Capacity	13.5 L / 3.6 US gal / 3.0 Imp gal
Top Speed	160 km/h / 99.4 mph

Though the Triumph 650 Bonneville was Triumph’s best seller in the 1960s, the 500cc T100 and its variants were far more important in motorcycle racing competition. Until 1969, bikes with overhead valves were restricted to 500cc in AMA-endorsed competition events, including the prestigious Daytona 200 mile race, which between 1955 and 1965 had pretty much become a Harley benefit race. But Triumph engineer Doug Hele’s dogged development work on the T100’s performance and handling earned back-to-back wins at Daytona in 1966 and 1967 with Buddy Elmore and Gary Nixon riding.

Not for the first time in motorcycling history, a win in a famous race prompted a new model name. For 1967, the T100R Daytona replaced the T100S/R, and featured a new cylinder head with larger intake valves, racing “Q” cams with radiused followers, dual 1-1/8-inch Amal carburetors and a revised frame/swingarm. The result was 41hp in a bike with a curb weight of just 371 pounds, 25 less than the Bonneville. The Triumph T100 C street scrambler joined it shortly after.

The Triumph T100 C used a single Amal for 38hp and was fitted with a pair of smaller mufflers mounted high on the bike’s left side, a small 5-3/4-inch headlight, no tachometer, and knobby tires — all of which said “desert sled.” Though undeniably purposeful looking, in stock form with its street-oriented suspension the T100 C didn’t really cut it in the truly rough stuff, but made a pleasant “dual-sport” rider.