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.
- Gearing
2006 Co-Motion Speedster has a 6% lower climbing ratio than 2002 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 $500 lower than 2006 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.
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
2006 Co-Motion Speedster
2002 Co-Motion Speedster
Overview
Model Year
2006
2002
Brand
Co-Motion
Co-Motion
Model
Speedster
Speedster
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$3,950.00
$3,450.00
Colors
Buyer's Choice
Blue, Purple, Red, Silver
Sizes
S, M, L, L/S
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
Chromoly, butted
Chromoly, triple-butted
Fork
Co-Motion
Co-Motion Tandem
Fork Material
Chromoly, unicrown crown
Chromoly, oversize, unicrown crown
Drivetrain
Component Group
Tandem Mix
Tandem Mix
Shifters
Shimano Dura-Ace STI Dual Control
Shimano Ultegra STI Dual Control
Front Derailleur
Shimano Dura-Ace Triple, bottom-pull/clamp-on 31.8mm
Shimano Ultegra Triple, bottom-pull/clamp-on 31.8mm
Rear Derailleur
Shimano XTR
Shimano Deore XT SGS
Crankset
FSA Gossamer Mega Exo, 30/42/54 teeth
Race Face Tandem, 32/44/54 teeth
Bottom Bracket
FSA Mega EXO
—
BB Shell Width
—
68mm English
Rear Cogs
9-speed, 11 - 34 teeth
9-speed, 11 - 34 teeth
Chain
Shimano CN-HG93
Shimano CN-HG92, 1/2 x 3/32"
Pedals
Not included
Not included
Brakes
Brakes
Avid Single Digit 7 brakes, Shimano Dura-Ace STI Dual Control levers
Shimano Ultegra Dual Pivot brakes, Shimano Ultegra STI Dual Control levers
Cockpit & Contact Points
Headset
1 1/8" threadless Race Face Deus
1 1/8" threadless Race Face Team SL
Handlebar
Deda Piega
Profile Hammer
Stem
Ritchey Pro
Ritchey Logic Pro
Saddle
Co-Motion anatomical
Co-Motion Dual Density
Seatpost
Kalloy aluminum, 29.8mm diameter
Zoom Microset, 29.8mm diameter
Wheels & Tires
Hubs
Front: DT Swiss Hugi FR, Rear: DT Swiss Onyx
Hugi Tandem
Rims
Velocity Dyad, 36-hole
Velocity Diad, 40-hole
Spokes
DT Swiss stainless steel, 14ga. (2.0mm) straight gauge
DT stainless steel, 14ga. (2.0mm) straight gauge
Spoke Nipples
Brass 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.