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500 Twins A7 and A7SS 1955 - 1962 |
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| Sporting
500cc A7SS Shooting Star has a strong following, who believe if to
be smoother and more flexible than the 650 twin
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The A7 has always
attracted a strong following, who believe it to be smoother and more flexible
than the 650 twin. Once equipped with the swinging arm frame, the A7 offers
similarly impressive handling and braking to the A10 Golden Flash.
In 1956
the A7's 6.6:1 compression engine produced 28bhp at 5800rpm - 7bhp less
than the A10. Yet with a 92mph top speed, performance from the touring
500 was very respectable. First available in maroon, the A7 was also offered
in black from 1956. Princess grey was the standard colour in 1959 - fuchsia
red from 1960.
The A7 Shooting
Star, often finished in two tone green - a dark frame with the remaining
cycle parts in a light metallic shade - was a popular machine. An aluminium
alloy cylinder head with a 7.25:1 compression ratio raised the sporting
A7's power output to 32bhp.
MotorCycling
found that a 1956 Shooting Star's top speed was 93mph, while The MotorCycle
achieved 98mph from their test model a year later. Manual ignition control
allows the rider to make best use of the engine's sporting performance.
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