Parallel-Twin
1961 Matchless G12
1961 Matchless G12 650 Twin 1961 MATCHLESS G12 BACKGROUND Just prior to World War II, Triumph rocked the world with their seminal 500 Speed Twin, but the world had to wait for the war to end before the rest of the industry would have a chance to catch up. At war’s end, BSA was first …
1947 Triumph Speed Twin
1947 Triumph Speed Twin 1947 TRIUMPH SPEED TWIN LEADS THE WAY At the end of World War II, civilian production of motorcycles ramped up quickly to tap into the tremendous pent up demand for transportation. 1946 was Triumph’s first postwar model year. The 5T Speed Twin was its best seller prior to the war, and …
1960 Matchless G12
1960 Matchless G12 650 Twin 1960 MATCHLESS G12 BACKGROUND Just prior to World War II, Triumph rocked the world with their seminal 500 Speed Twin, but the world had to wait for the war to end before the rest of the industry would have a chance to catch up. At war’s end, BSA was first …
1965 Matchless G12CSR
1965 Matchless G12CSR 650 Twin 1965 MATCHLESS G12CSR – A BRIEF HISTORY Matchless built their first vertical twin in 1949, the 500cc G9. In 1956, they punched it out to 600cc and named it the G12 (seen here). In 1959 they punched it out again to 650cc and called it the G15. In 1963 there …
1964 Matchless G12
1964 Matchless G12 650 Monarch Twin 1964 MATCHLESS G12 BACKGROUND Just prior to World War II, Triumph rocked the world with their seminal 500 Speed Twin, but the world had to wait for the war to end before the rest of the industry would have a chance to catch up. At war’s end, BSA was …
1963 Matchless G12CS
1963 Matchless G12CS 1963 MATCHLESS G12CS – A BRIEF HISTORY In 1963 there were four models offered of the G12. There was the Standard, De Lux, the CS (Competition Sport) and the CSR (Competition Sport, Road). They all were 646cc vertical twins with the 4-speed AMC gear box, Lucas magneto ignition. The CS and CSR …
1966 Matchless G12
1966 Matchless G12 1966 MATCHLESS G12 BACKGROND In the 1950s, Matchless and AJS were the diamonds in AMC’s (Associated Motor Cycles) crown, but by the 1960s, their fortunes had turned for the worst. Matchless had launched the G12 and AJS Model 31 650 twins in 1958, with high hopes for big sales in the US …
1953 Matchless G9
1953 Matchless G9 500 Twin 1953 MATCHLESS G9 BACKGROUND Like everyone else in the British motorcycle industry at the time, when Triumph rocked the world with their 1938 Speed Twin, the world’s first modern 500cc vertical twin, AMC (Associated Motor Cycles), parent company of Matchless, and AJS, developed a new 500 vertical twin for both …
1955 Matchless G9B
1955 Matchless G9B 1955 MATCHLESS G9B BACK STORY The 1955 Matchless G9B has an interesting history, that is also very telling about the British motorcycle industry at the time. Frank Cooper was the US distributor for AMC (Associated Motor Cycles) who produced Matchless, AJS and Francis-Barnett motorcycles. In the late 1940s, America was quickly becoming …
1956 Matchless G9
1956 Matchless G9 500 Twin 1956 MATCHLESS G9 BACKGROUND Matchless Motorcycles cut their teeth on the depressed British home market, depressed both before World War II and after. They did good business selling reliable single-cylinder bikes to commuters who used them as their only means of transport to and from work. But things were changing …
1958 Ariel Huntmaster
1958 Ariel Huntmaster 1958 ARIEL HUNTMASTER BACKGROUND Ariel was owned by the Sangster family, failed a few times, then ended up in the hands of young Jack Sangster. Ariel was his entry into the British motorcycle industry, something that would have profound effects on it. He did so well selling single-cylinder Red Hunters, that he …
1961 Triumph Speed Twin
1961 Triumph Speed Twin 1961 TRIUMPH SPEED TWIN HAS A “BATHTUB” The British home market had been hungry for cheap transportation after WWII, and commuter motorcycles helped fill that role. But England being…well, England, was wet and rainy and to prevent rust an owner needed to wipe his bike down each night after getting home …
1949 Triumph T100 Tiger
1949 Triumph T100 Tiger 1949 TRIUMPH T100 TIGER LEADS THE PACK At the end of World War II, civilian production of motorcycles ramped up quickly to tap into the tremendous pent up demand for transportation. 1946 was Triumph’s first postwar model year. The 5T Speed Twin, its best seller prior to, and after the war, …
1956 Triumph Blackbird
1956 Triumph Blackbird ABOVE: The 1956 Triumph Blackbird was essentially a 6T Thunderbird painted black. This earned it the name “Blackbird”. STUCK WITH THE IRON HEAD The 1956 Thunderbird retained its old cast iron head and all its overheating problems, while the new alloy “Delta head” debuted on the Triumph Tiger T110 and the new …
1971 BSA A70 Lightning
1971 BSA A70 Lightning 1971 BSA A70 LIGHTNING IS BORN BSA wanted to enlarge their 650 twin to a 750 to compete in the open class in AMA Class C racing. But the rules required that the races bikes be based on an actual production bike that the public could buy. The magic number was …
1968 Triumph Daytona
1968 Triumph Daytona 500 1968 TRIUMPH DAYTONA – WHAT’S IN A NAME? Triumph derived the name of this bike from Buddy Elmore’s win at the 1966 Daytona 200 at Daytona Beach FL riding a Triumph T100T Tiger 500 twin. It was Triumph’s first-ever Daytona victory, with an average speed of 96.6 mph. By 1967, it …
1963 Royal Enfield Interceptor
1963 Royal Enfield Interceptor 1963 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 …
1962 BSA A65
1962 BSA A65 1962 BSA A65 – NEW UNIT TWIN After 15 years of great success with their pre-unit twins, the 500cc A7 and the 650cc A10, BSA had a real challenge ahead of them. How do you follow up a ‘home run’ like the A7 & A10? They had proven themselves to be not …
1959 Norton Dominator
1959 Norton Dominator 1959 NORTON DOMINATOR BACKGROUND Norton designed the legendary “Featherbed Frame” for the single-cylinder Manx racer in 1950. In 1953 they dropped the Model 7’s 500 twin-cylinder engine into the Featherbed frame, and created a new bike, the Norton Dominator, in fact a whole new line of bikes. As a 500, the Dominator …
1964 Triumph Thunderbird
1964 Triumph Thunderbird 1964 TRIUMPH THUNDERBIRD AS A COMMUTER? When the 6T Thunderbird launched in 1950, it was the first Triumph 650 (up from the 500cc 5T Speed Twin, and was the largest British-made parallel twin at the time. As such, it was a true hot rod in its day. However, the rest of the …
1958 BSA A10
1958 BSA A10 Pre-Unit 650 Twin 1958 BSA A10 BACKGROUND BSA’s A10 was the 650 version in it’s twin cylinder heavyweight line. The 500cc version was called the A7. Following Triumph‘s success with its seminal 500 Speed Twin, after the war, BSA and most of the rest of the British motorcycle industry followed with their …
1956 Triumph Thunderbird
1956 Triumph Thunderbird ABOVE: This 1956 Triumph Thunderbird wearing black livery was nicknamed “Blackbird” by the public and it stuck. STUCK WITH THE IRON HEAD The 1956 Triumph Thunderbird retained its old cast iron head and all its overheating problems, while the new alloy “Delta head” debuted on the Triumph Tiger T110 and the new …
1966 Norton Atlas
1966 Norton Atlas 1966 NORTON ATLAS HISTORY The story starts not with a Norton at all, but with the 1938 Triumph 500 Speed Twin, the world’s first “modern” vertical twin. The rest of the British motorcycle industry went nuts and rushed to field their own 500 twins. But WWII got in the way, putting things …
1954 Triumph Speed Twin
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 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 …
1957 Triumph Thunderbird
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 …
1962 Triumph TR6
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 …
1969 Triumph Daytona
1969 Triumph Daytona 500 1969 TRIUMPH DAYTONA – WHAT’S IN A NAME? Triumph derived the name of this bike from Buddy Elmore’s win at the 1966 Daytona 200 at Daytona Beach FL riding a Triumph T100T Tiger 500 twin. It was Triumph’s first-ever Daytona victory, with an average speed of 96.6 mph. By 1967, it …
1967 BSA A65
1967 BSA A65 1967 BSA A65 LIGHTNING 1967 BSA A65 LIGHTNING The 650 Lightning was BSA’s top-line bike, and meant to do battle with the market-dominating Triumph Bonneville and had twin carbs just like the Bonnie. The Lightning was certainly fast enough and handled well. It just never had the styling to compete with the …
1966 Triumph TR6
1966 Triumph TR6 1966 TRIUMPH TR6 BY THE NUMBERS For the 1966 model year, the model lineup were TR6, TR6R, TR6SR, TR6SS, TR6C & TR6SC, all called “Trophy”. Engine & Frame Numbers ran from DU24876 to DU43161, with build dates running from August 6, 1965 to July 8, 1966. The TR6C was essentially a standard …
1976 Triumph TR7
1976 Triumph TR7 1976 TRIUMPH TR7 IS A FIRST The 1976 model year was the first full model year under the newly-formed, worked-owned Meriden Co-op. It was also the first year that the big twins (Bonneville and TR7 went to left-foot-shift, as mandated by US law. It was a big change to have to make …
1960 Triumph T100 Tiger
1960 Triumph T100 Tiger “Bathtub” 1960 TRIUMPH T100 TIGER BATHTUB STYLING Bathtub styling was part of a brief flirtation with enclosed bike that infected England from the mid-50s to the mid-60s. After WWII, Brits were in dire need of basic transportation, and most couldn’t afford cars, so they commuted on bikes to and from work. …
1955 Triumph T110 Tiger
1955 Triumph T110 Tiger 1955 TRIUMPH T110 TIGER CONTINUALLY IMPROVES True to the British style at the time, steady, continuous improvements were applied to all their bikes. The 650cc T110 Tiger was their hottest bike in 1955 (the TR6 wouldn’t topple its top spot until 1956), so much attention was lauded on it. 1954 Tigers …
1959 Triumph TR6
1959 Triumph TR6 1959 TRIUMPH TR6 NOMENCLATURE 1959 was the last year that the TR6 did not carry a letter designation after it. Starting with model-year 1960, the TR6 model line split in two, with the TR6/A being the low-piped street version and the TR6/B the high-piped dirt bike. But for 1959, it was still …
1952 Triumph T100 Tiger
1952 Triumph T100 Tiger 1952 TRIUMPH T100 TIGER LEADS THE PACK At the end of World War II, civilian production of motorcycles ramped up quickly to tap into the tremendous pent up demand for transportation. 1946 was Triumph’s first postwar model year. The 5T Speed Twin, its best seller prior to, and after the war, …
1971 Triumph TR6
1971 Triumph TR6 The 1971 Triumph TR6 saw the introduction of the new oil-bearing frame & all new cycle gear. This photo is of a ’71 TR6 Tiger. The TR6 had a single carburetor while the Bonneville had two. ABOVE: Everything was all-new on the ’71 TR6 and Bonneville, except the engine. The new oil-bearing …
1963 Triumph TR6
1963 Triumph TR6 1963 TRIUMPH TR6 BY THE NUMBERS The only model for 1963 was the Triumph TR6 S/S (Street Scrambler). Engine numbers ran from DU102 to DU5790 with build dates running from Sept. 29, 1962 to August 14, 1963. UNIT CONSTRUCTION FINALLY HITS THE 650s Unit Construction, all the rage in the late 1950s …
1947 Triumph T100
1947 Triumph T100 Tiger 1947 TRIUMPH T100 TIGER LEADS THE PACK At the end of World War II, civilian production of motorcycles ramped up quickly to tap into the tremendous pent up demand for transportation. 1946 was Triumph’s first postwar model year. The 5T Speed Twin, its best seller prior to, and after the war, …
1963 BSA A65
1963 BSA A65 NEW MODELS The 1963 BSA A65 was, of course, the second model year of the new unit construction BSA twins, the 500cc A50, and the 650cc A65, which had replaced the very successful pre-unit A7 (500) & A10 (650) in 1962. BSA was very conservative in the new machine’s configuration, as was …
1970 Triumph TR6
1970 Triumph TR6 1970 TRIUMPH TR6 BY THE NUMBERS For 1970, the Triumph TR6 was again known as “Tiger”, as the single carb twin would continue to be known, even beyond the switch from 650 to 750. But for the 1970 model year, there were 4 models in the TR6 lineup: The standard TR6, Roadster …
