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03-25-02, 10:05 PM
Questions for you geometry and positioning specialists:
On a road bike, the relatively slack seattube angle (~72 degrees) helps you to use both the quadriceps and the hamstrings (and gluteals) to power the pedals.
The geometry of the Tri-bike (78 degree seattube) attempts to favor using the quadriceps, and sparing the hamstrings, since they are required for the run (in triathlon).
Now, the question: in the classic 40km TT, which approach generally yields the fastest time? Why? And, what other considerations should I be aware of?
Thanks!
On a road bike, the relatively slack seattube angle (~72 degrees) helps you to use both the quadriceps and the hamstrings (and gluteals) to power the pedals.
The geometry of the Tri-bike (78 degree seattube) attempts to favor using the quadriceps, and sparing the hamstrings, since they are required for the run (in triathlon).
Now, the question: in the classic 40km TT, which approach generally yields the fastest time? Why? And, what other considerations should I be aware of?
Thanks!