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  • Gears compared with HTD 5 mm pitch 15 mm wide 24T pulleys [1]
  • Belts may appear cheaper than chain but maintenance cost is higher [2]
  • Excellwnt thread on stretch data for steel vs nylon belted belts. Kevlar is similar to steel. Stretch is about 0.2% per 20lb of force. [3]. Steel has 2x stretch.