Bi-laminate bottom bracket shell
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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
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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
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stiffness without impairing ride quality. The bi-laminate bottom bracket is available as an option on all Hallett frames.
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