- Frame
- Reynolds 631 air-hardened steel zonally-butted
- Groupset
- Tandem Mix
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 2010 Co-Motion Speedster.
- Gearing
2002 Co-Motion Speedster has a 12% 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
2002 Co-Motion Speedster had an original MSRP $1,450 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.
Lowest1.07:1Highest4.73:1Total range441%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×28; rear size isn’t listed.
Lowest0.94:1Highest4.91:1Total range522%
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
2010 Co-Motion Speedster
2002 Co-Motion Speedster
Overview
Model Year
2010
2002
Brand
Co-Motion
Co-Motion
Model
Speedster
Speedster
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$4,900.00
$3,450.00
Colors
Choice of 30 standard PPG
Blue, Purple, Red, Silver
Sizes
Captain 21"/stoker 18", captain 22"/stoker 19", captain 23"/stoker 18", captain 23"/stoker 20"
Captain 21"/stoker 18", captain 22"/stoker 19", captain 23"/stoker 18", captain 23"/stoker 20"
Weight
—
36 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Reynolds 631 air-hardened steel zonally-butted
Chromoly, triple-butted
Fork
Co-Motion Tandem Disc Fork
Co-Motion Tandem
Fork Material
Taper Gauge Chromoly w/CNC steerer, unicrown crown
Chromoly, oversize, unicrown crown
Drivetrain
Component Group
Tandem Mix
Tandem Mix
Shifters
Shimano Ultegra STI
Shimano Ultegra STI Dual Control
Front Derailleur
Shimano Ultegra Triple
Shimano Ultegra Triple, bottom-pull/clamp-on 31.8mm
Rear Derailleur
Shimano Ultegra Triple
Shimano Deore XT SGS
Crankset
FSA Gossamer Mega Exo, 30/39/52 teeth
Race Face Tandem, 32/44/54 teeth
Bottom Bracket
FSA Gossamer MegaExo
—
BB Shell Width
—
68mm English
Cassette
SRAM 1070
—
Rear Cogs
10-speed, 11 - 28 teeth
9-speed, 11 - 34 teeth
Chain
KMC X10
Shimano CN-HG92, 1/2 x 3/32"
Pedals
Not included
Not included
Brakes
Brakes
Avid BB-7 w/203mm rotor brakes, Shimano Ultegra STI levers
Shimano Ultegra Dual Pivot brakes, Shimano Ultegra STI Dual Control levers
Cockpit & Contact Points
Headset
1 1/8" threadless Chris King
1 1/8" threadless Race Face Team SL
Handlebar
FSA Gossamer/Stoker rear
Profile Hammer
Handlebar Extensions
Not included
—
Stem
FSA OS-150 and Co-Motion Telescoping Stoker
Ritchey Logic Pro
Saddle
Selle Italia C2 Flow Men's & Women's Lady Flow
Co-Motion Dual Density
Seatpost
Kalloy Seraph, 29.8mm diameter
Zoom Microset, 29.8mm diameter
Wheels & Tires
Hubs
DT Swiss 540
Hugi Tandem
Rims
Velocity Dyad
Velocity Diad, 40-hole
Spokes
DT Swiss, 14ga. (2.0mm)
DT stainless steel, 14ga. (2.0mm) straight gauge
Spoke Nipples
—
Brass nipples
Front Tire
700 x 28c Continental Ultra Gator Skin
700 x 28c Panaracer Pasela
Wheel Size
700c wheels
700c wheels
Geometry · choose a size for each bicycle
Geometry size
—
Head-tube angle
—
73°
Seat-tube angle
—
73°
Chainstay / rear center
—
438.1 mm
Wheelbase
—
1765.3 mm
Fork offset / rake
—
50 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run. Legacy reference geometry is model-level historical data whose corresponding frame size is not identified; compare those dimensions as reference values rather than size-normalized fit data.