DISRAELI GEARS

Spark

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This is another fascinating derailleur. It is a fairly faithful copy of the famously crude and ugly 1980s Simplex SX1 (or Alpha) - but with its own quixotic flourishes. Dig those glossy pulley cage plates.

It has 'SPARK' carved into its outer parallelogram plate in a touchingly simple but accurate way, and also has 'SPARK' cast onto its p-knuckle. From this I cunningly deduce that it is manufactured by Spark Engineering of Ghaziabad, India.

I bought it from a person in the Czech Republic. How it made its way from the fragrant suburbs of New Delhi to the stag party capital of Central Europe remains a mystery to me.


  • Derailleur brands: Spark
  • Country: India
  • Date of introduction: 1995?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 252g
  • Maximum cog: 28 teeth (based on Simplex SX1/Alpha)
  • Total capacity: 30 teeth (based on Simplex SX1/Alpha)
  • Pulley centre to centre: 54mm
  • Index compatibility: friction
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: unsprung
  • P pivot: sprung
  • Materials: steel with plastic knuckles
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