Velopedia Bicycle Archive
Compare Bicycles
Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Data limitation
No geometry is recorded for 2006 Co-Motion Speedster and 2010 Co-Motion Speedster.
- Gearing
2006 Co-Motion Speedster has a 18% lower climbing ratio than 2010 Co-Motion Speedster.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
- Identity & price
2006 Co-Motion Speedster had an original MSRP $950 lower than 2010 Co-Motion Speedster.
Original MSRP is the published list price when new, not today’s used-bike value.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.88:1Highest4.91:1Total range556%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×28; rear size isn’t listed.
Lowest1.07:1Highest4.73:1Total range441%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×28; rear size isn’t listed.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
2006 Co-Motion Speedster
2010 Co-Motion Speedster
Overview
Model Year
2006
2010
Brand
Co-Motion
Co-Motion
Model
Speedster
Speedster
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$3,950.00
$4,900.00
Colors
Buyer's Choice
Choice of 30 standard PPG
Sizes
S, M, L, L/S
Captain 21"/stoker 18", captain 22"/stoker 19", captain 23"/stoker 18", captain 23"/stoker 20"
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Chromoly, butted
Reynolds 631 air-hardened steel zonally-butted
Fork
Co-Motion
Co-Motion Tandem Disc Fork
Fork Material
Chromoly, unicrown crown
Taper Gauge Chromoly w/CNC steerer, unicrown crown
Drivetrain
Component Group
Tandem Mix
Tandem Mix
Shifters
Shimano Dura-Ace STI Dual Control
Shimano Ultegra STI
Front Derailleur
Shimano Dura-Ace Triple, bottom-pull/clamp-on 31.8mm
Shimano Ultegra Triple
Rear Derailleur
Shimano XTR
Shimano Ultegra Triple
Crankset
FSA Gossamer Mega Exo, 30/42/54 teeth
FSA Gossamer Mega Exo, 30/39/52 teeth
Bottom Bracket
FSA Mega EXO
FSA Gossamer MegaExo
Cassette
—
SRAM 1070
Rear Cogs
9-speed, 11 - 34 teeth
10-speed, 11 - 28 teeth
Chain
Shimano CN-HG93
KMC X10
Pedals
Not included
Not included
Brakes
Brakes
Avid Single Digit 7 brakes, Shimano Dura-Ace STI Dual Control levers
Avid BB-7 w/203mm rotor brakes, Shimano Ultegra STI levers
Cockpit & Contact Points
Headset
1 1/8" threadless Race Face Deus
1 1/8" threadless Chris King
Handlebar
Deda Piega
FSA Gossamer/Stoker rear
Handlebar Extensions
—
Not included
Stem
Ritchey Pro
FSA OS-150 and Co-Motion Telescoping Stoker
Saddle
Co-Motion anatomical
Selle Italia C2 Flow Men's & Women's Lady Flow
Seatpost
Kalloy aluminum, 29.8mm diameter
Kalloy Seraph, 29.8mm diameter
Wheels & Tires
Hubs
Front: DT Swiss Hugi FR, Rear: DT Swiss Onyx
DT Swiss 540
Rims
Velocity Dyad, 36-hole
Velocity Dyad
Spokes
DT Swiss stainless steel, 14ga. (2.0mm) straight gauge
DT Swiss, 14ga. (2.0mm)
Spoke Nipples
Brass nipples
—
Front Tire
700 x 28c Continental Ultra Gator Skin
700 x 28c Continental Ultra Gator Skin
Wheel Size
700c wheels
700c wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.