Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2010 Co-Motion Speedster and 2006 Co-Motion Speedster.

  2. 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.

  3. 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.

2010 Co-Motion Speedster52/39/30T · 11–28T · 10-speed
Lowest1.07:1Highest4.73:1Total range441%
Estimated speed at 90 RPMLowest gear7.7 mphHighest gear33.8 mph

Uses front tire 700C×28; rear size isn’t listed.

2006 Co-Motion Speedster54/42/30T · 11–34T · 9-speed
Lowest0.88:1Highest4.91:1Total range556%
Estimated speed at 90 RPMLowest gear6.3 mphHighest gear35.1 mph

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.

Try other gearing

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.
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Specification
2010 Co-Motion Speedster
2006 Co-Motion Speedster
Overview
Model Year
2010
2006
Brand
Co-Motion
Co-Motion
Model
Speedster
Speedster
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$4,900.00
$3,950.00
Colors
Choice of 30 standard PPG
Buyer's Choice
Sizes
Captain 21"/stoker 18", captain 22"/stoker 19", captain 23"/stoker 18", captain 23"/stoker 20"
S, M, L, L/S
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Reynolds 631 air-hardened steel zonally-butted
Chromoly, butted
Fork
Co-Motion Tandem Disc Fork
Co-Motion
Fork Material
Taper Gauge Chromoly w/CNC steerer, unicrown crown
Chromoly, unicrown crown
Drivetrain
Component Group
Tandem Mix
Tandem Mix
Shifters
Shimano Ultegra STI
Shimano Dura-Ace STI Dual Control
Front Derailleur
Shimano Ultegra Triple
Shimano Dura-Ace Triple, bottom-pull/clamp-on 31.8mm
Rear Derailleur
Shimano Ultegra Triple
Shimano XTR
Crankset
FSA Gossamer Mega Exo, 30/39/52 teeth
FSA Gossamer Mega Exo, 30/42/54 teeth
Bottom Bracket
FSA Gossamer MegaExo
FSA Mega EXO
Cassette
SRAM 1070
—
Rear Cogs
10-speed, 11 - 28 teeth
9-speed, 11 - 34 teeth
Chain
KMC X10
Shimano CN-HG93
Pedals
Not included
Not included
Brakes
Brakes
Avid BB-7 w/203mm rotor brakes, Shimano Ultegra STI levers
Avid Single Digit 7 brakes, Shimano Dura-Ace STI Dual Control levers
Cockpit & Contact Points
Headset
1 1/8" threadless Chris King
1 1/8" threadless Race Face Deus
Handlebar
FSA Gossamer/Stoker rear
Deda Piega
Handlebar Extensions
Not included
—
Stem
FSA OS-150 and Co-Motion Telescoping Stoker
Ritchey Pro
Saddle
Selle Italia C2 Flow Men's & Women's Lady Flow
Co-Motion anatomical
Seatpost
Kalloy Seraph, 29.8mm diameter
Kalloy aluminum, 29.8mm diameter
Wheels & Tires
Hubs
DT Swiss 540
Front: DT Swiss Hugi FR, Rear: DT Swiss Onyx
Rims
Velocity Dyad
Velocity Dyad, 36-hole
Spokes
DT Swiss, 14ga. (2.0mm)
DT Swiss stainless steel, 14ga. (2.0mm) straight gauge
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.

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