Posted September 7, 2009 by admin in Mtb, Road, Shimano | No comments yet
Shimano’s real advance came in beating its competitors in becoming the dominant force in the early mountainbike marketplace with the creation of dedicated off road thumb shifters and beefed up brakes that could withstand the extra demands that off roaders required. By the late 1980s Shimano were the standard on off the peg mtbs.
This led to further expansion of the product range with off road shoes being added in 1988 and rapidfire underbar shifters in 1989. In 1990 Shimano revolutionized off road pedals with their SPD range of quick release pedals.
In 1995 Shimano developed its hub gearing credentials with its Nexus range of four and seven speed internal hubs for cruiser and city style bicycles as well as a lockable hub gear that could prevent a bicycle being stolen and ridden away. This was released in Japan in 1997. In utility cycling Shimano excelled as Chinese demand for higher quality bikes increased. Previously the majority of bike in china had only one gear, but as the economic fortunes of China increased so did the number of gears on their bicycles with Shimano thought to have equipped around half of the 320 million bikes sold there.
It was not all plain sailing for Shimano during this era, the largest recall of bicycle parts ever was for their cranks which had been reported as breaking do to a design fault. 2.5 million were recalled which cost Shimano $15million, an expensive downside to their popularity on virtually every mountainbike sold during that period.
Success against their main rivals Campagnolo on the road began in 1988 with Andy Hamsten’s victory in the Giro d’Italia but was cemented in 1999 when they were ridden to their first ever Tour De France win when Lance Armstrong began his winning streak, further removing the dominance of European cycling brands from this traditional area of cycle sport. One that is continuing to this day.
Shimano Innovations:
Biopace chainrings – non circular chainrings
Nexus – Internal geared hubs with coaster brake
Dyna Drive – A pedal system with no pedal axle. Did not catch on.
Freehub body – Combined rear hub and freewheel body. Allowed Sprockets to be easily changed. Did not succeed originally but was re-introduced when more sprockets were being fitted to gearing systems.
Hyperglide – ramped sprockets to allow for easier upshifting
Hollowtech Cranks - pressure die cast cranks as tubes open at the pedal end and forged closed before being threaded for pedals.
ServoWave brakes – Cams fitted to brake levers to allow more cable to be pulled at the start of the braking process and less when pads are against the rims allowing for greater modulation
STI – Gearshifts and braking all done from the same lever. Riders no longer had to take their hands from the bars to change gears.
SLR – Sprung brake levers coupled with weaker springs on the brakes themselves giving the impression of easier operation.
Some classic Shimano Groupsets include
Dura Ace
Ultegra
600
600EX
AX
105
Sante
DeoreXT
Deore XTR
Deore LX
Deore DX
Deore
Hone
Saint
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