A tale of two bike designs 20140504

Layed Back Recumbent Sissy Upright FEATURES

Experience Overall best riding experience Tough on you physically Ergonomics Very Comfortable with no stress points

Head up with maximum view Stress points at rear and front Head down with limited view

Balance Lower CoG hard to balance at slow speeds vulnerable to side winds

Higher CoG easier to balance side winds affect balance

Maneuverability No bunny hopping More comfortable in high speed turns

Better maneuverability Top heavy

Braking Stopping limited only by tire grip Pads to carbon rim slippery Power Transfer Average

no weight leverage, long chain Above Average Advantage of standing up on pedals

Aerodynamics Very Efficient Minimal Wind Profile

Efficient Racing position + Aerodynamic Tubing

Speed Fast on flats and downhills Great climbing ability Power demand Speed limited by leg strength Speed limited by fitness Heart Rate Lower demand on heart rate Higher demand on heart rate

SPECS

Model Challenge Seiran XL Specialized Venge Frame Aluminum Tube Carbon Fiber Steering Under Seat Steering Road Bike Handlebars Seating Ergonomic Seating Design Road Bike Seat Wheels 650c front, 700c Rear 700c Front + Rear Composition Carbon spokes and body with aluminum rim Spokes with Carbon rim Bearings Ceramic Unknown Tires 25mm, 23mm 23mm, 23mm Crank Length 172.5mm 175mm Front Gears 30/39/52 39/53 Back Gears 9 Speed 11-34 11 speed 11-28 Gear Inch Range 23.2-124.3 36.6-126.7 Brakes Disk Caliper Weight 34.5 lbs. 16 lbs.

Rating

Rollability Aerodynamics Power Transfer Ergonomics Speed Climbing

Speed Flat Speed Downhill

A tale of two bike designs 20140504

Tony Serrano Century Rosewell Mayor’s Ride Recumbent Upright

Power demand on HR is 66% under 150 bpm Power demand on HR is 67% over 150 bpm