Hallett Handbuilt Cycles
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Bi-laminate bottom bracket shell



The bottom bracket is the most highly-loaded part of the cycle frame and plays a major role in ensuring that the rider's power is transferred effectively from the crankset to the rear wheel. ​By placing the lug points at the area of maximum 
bending stress under pedalling load, at the sides of the down and seat tubes - unlike the conventional arrangement where they are aligned in the fore-and-aft plane - this design greatly increases the bracket's lateral 

stiffness without impairing ride quality. ​The bi-laminate bottom bracket is available as an option on all Hallett frames. 
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  • Home
  • About
  • Tech Stuff
    • 650B
    • Materials
    • Methods
    • Bi-Laminate Bottom Bracket
  • Models
    • Adventure Tour
    • 650 Adventure
    • Road Tour
    • Fast Road
    • Track
    • Super Audax
    • Road Classic
    • Special projects
  • Custom stuff
    • Stainless steel tube sets
    • Ornate lugwork
    • Stainless steel highlights
    • Racks
    • Wheels
    • Custom forks
    • Gallery
  • Prices
  • Contact
  • Links