Owner: George Costa
Email: george@rennendesigngroup.com
Phone: 781-632-5480
Rennen Tech Talk Articles:
California Gearing
Gear Ratio I
Gear Ratio II
First Pedal Effectivness
Standard Deviation
Speed
Performance Math
Weight
Torque
Power
Acceleration
BMX Materials Part I
BMX Materials Part II
Twenty to Cruiser Gearing
