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SunTour Superbe Tech L (4800)

The story of the SunTour Superbe Tech series is a perfect example of hubris - of overweening pride, self-confidence, and even arrogance resulting in fatal retribution (you can’t beat Wikipedia for a definition).


In 1982 SunTour was at the peak of its powers, dominating the world market for derailleurs like a colossus. The French were vanquished, the Italians driven back into their tiny road racing redoubt and Shimano was smarting from the market failure of its Positron and Dura-Ace AX initiatives.


SunTour decided that it would redefine the derailleur for a generation - and that the Superbe Tech would be that redefinition. The cable run was under the bottom bracket, along under the chainstay, then through a clamp-on tubular guide and straight onto the clamp bolt. No cable outer anywhere to get clogged with mud. The parallelogram was completely enclosed, with the smooth enclosure effectively acting as one parallelogram plate. The longer cage versions had SunTour’s ‘Tech’ cage design. Combine it all with SunTour’s slant parallelogram and reputation for reliability and you have a brilliant package, so far ahead of anything anyone else had to offer that it was over the horizon. I remember the Superbe Techs as being irresistable to bike freaks everywhere, we all wanted to admire them, touch them and even, despite the expense, to dream of buying them.


But the Superbe Tech was a flawed work of genius, it shared with the MounTech the problem of the unreliable, irreplaceable guide pulley, it shared with the MounTech the problem of the excessive weight of all this technology, and it went beyond the MounTech in that the fancy sealed parallelogram went out of alignment and was hell to disassemble and repair (US patent # 4,469,479 figure 4a shows an exploded diagram).


Continuing the theme of hubris, the Superbe Tech is often described as ‘the most beautiful derailleur of all time’, so I have deliberately included this mid-length pulley cage, ‘L’, example - the most thoroughly scratched derailleur in this collection. Pride that dines on vanity, sups on contempt.


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  1. Brand: SunTour

  2. My categories: SunTour - the Superbe story, SunTour - the mountain bike gears, SunTour - Frank Berto and the curse of Duopar

  3. Country: Japan

  4. Date of introduction: 1983

  5. Date of this example: unknown (it’s all too beautiful to mar with a two letter date code)

  6. Model no: 4800

  7. Weight: 299g

  8. Maximum cog: 34 teeth (Source: Sutherlands fourth edition)

  9. Total capacity: 34 teeth (Source: Sutherlands fourth edition)

  10. Pulley centre to centre: 65mm

  11. Index compatibility: friction

  12. Chain width: 3/32”

  13. Logic: top normal

  14. Pivots: three pivots, rear unsprung and the other two sprung

  15. Material: largely aluminium with steel pulley cage plates and link element plate

0158/E

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SunTour_Superbe_derailleur_%282100%29.html