Harley-Davidson Evolution engine The Harley-Davidson Evolution engine is entirely new only from its base gaskets up, though the crankcase does contain significant refinement. What are the changes and their purposes? First, an engine's operating temperature
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H-D Evo: worth buying?
Harley-Davidson FXDS It all started back in 1971. Harley had the big FLH Electra Glide and the little XL Sportster, but nothing in between. In a moment of inspiration, Willie G Davidson stripped the panniers
Read moreRoad Test: Harley-Davidson Electra-Glide Classic
1980 Harley-Davidson Electra-Glide Classic Although Harley has flourished more recently, back in the Seventies the situation was far less rosy. Just as happened in Britain, once the Japanese started to make large capacity bikes, America’s
Read moreBuying Guide: Suzuki RE5M
Suzuki RE5M Suzuki launched its radical rotary engined RE5 at the Tokyo Show in Autumn of 1973 and appeared to be leading the rotary revolution. The company obtained a rotary licence from NSU in 1970,
Read moreBuying Guide: Yamaha RD400
Yamaha’s RD400 – great performance and usability Someone once said: “when the green flag drops the boasting stops,” and this month we’re reviewing a machine that unarguably eradicates 99.99% of all known BS. In terms
Read moreWorkshop: BSA pre-unit service notes
BSA A7/A10 service notes (pdf) BSA's 500cc parallel twin, the A7, was introduced in September 1946, though the initial design was laid down before 1939. It was a bit of a 'committee' engine — the
Read moreBuying Guide: Honda CB250
Honda CB250 – you meet the nicest people on a Honda, etc… By 1967 Honda’s, by now almost legendary, CB72 could trace its ancestry back a decade. Although a phenomenal machine, its profit margins are
Read moreBuying Guide: Honda CB900
Honda CB900F If ever a bike has lived in the shadow of another it’s the Honda CB900F. When the CB900 was launched in 1979 the press, and public alike, had their attention firmly fixed on
Read moreWorkshop: Decoking two stroke exhausts
Give your exhausts an overhaul… There are now no longer any hard and fast rules to decoking two-strokes and the changes in two-stroke oil technology since the 1970s means a one-size-fits-all approach is no longer
Read moreWorkshop: Honda CB750K2 overhaul: 1
1970 Honda CB750K2 Our bike is a CB750 K1 manufactured in 1970 for the American market and is number 28,208 off the production line that year, with production starting from frame number CB750 – 1044650.
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