3 ms·

What makes you say "reasonably good"? It's excellent. Ten kilograms of metal makes you three times faster at a quarter the energy spend, I'd say it's amazing.

• kaba0 5y ago
  Not disagreeing, but the biggest efficiency boost is the wheel here without doubt.
  • Grustaf 5y ago
    Well the wheels alone are not enough, a draisine bike is not as efficient as a pedal powered bike!