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1954 Triumph Speed Twin 1954 TRIUMPH SPEED TWIN BACKGROUND In a few short years, the 5T Speed Twin went from being one of the world’s premium performance motorcycles to be Triumph’s entry-level twin. It had been surpassed by the T100 Tiger with its higher compression and hotter cams. And soon it would be bumped down …
1970 Royal Enfield Interceptor 1970 ROYAL ENFIELD INTERCEPTOR BACKGROUND Royal Enfield hopped up its 692cc Constellation and created a new model, the 700 Interceptor in 1960, for sale in the US and Canada markets only (on England). They’d just lost their contract to rebadge Constellations with Indian Motorcycle regalia then selling them in the US …
1939 BSA Silver Star 1939 BSA SILVER STAR BACKGROUND The brilliant engineer Val Page designed BSA’s new 500 single in 1937, while at the same time bringing some rationale to BSA’s complex product lineup. It was now made up of 250 and 350 singles in what was called the “B-class”, and the top-of-the-line 500 heavyweight …
1957 Triumph Thunderbird 1957 TRIUMPH THUNDERBIRD IS THE COOKING VERSION The 1957 Triumph Thunderbird was fast becoming the ‘ugly sister’ to the hot new Triumph TR6 and the already red-hot Triumph Tiger T110. With its full fenders, headlight nacelle and milder tuning, the 6T was really the basic commuter of the Triumph 650 line. In …
1951 Ariel Square Four 1951 ARIEL SQUARE FOUR BACKGROUND The original Ariel Square Four was created by legendary engine designer, Edward Turner in 1930. In its original form, it displaced 500cc and had four cylinders arranged in a ‘square’. It was unusual in that it had two crankshafts, one behind the other, each with two …
1962 Triumph TR6 1962 TRIUMPH TR6 NOMENCLATURE Of course, this is tFor the 1962 model year the only Triumph TR6 produced was the Triumph TR6 S/S Trophy. Gone were the “C” & “R” designations, leaving the TR6 to become very much a Triumph Bonneville without the second carb. 1962 Triumph TR6 S/S engine & frame …
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