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 Primera.

  2. Gearing

    2002 Co-Motion Primera has a 12% lower climbing ratio than 2010 Co-Motion Primera.

    A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.

  3. Identity & price

    2002 Co-Motion Primera had an original MSRP $705 lower than 2010 Co-Motion Primera.

    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 Primera52/39/30T · 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.

2002 Co-Motion PrimeraSize Legacy reference · 54/44/32T · 11–34T · 9-speed
Lowest0.94:1Highest4.91:1Total range522%

Speed unavailable: wheel or tire size is missing or unclear.

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 Primera
2002 Co-Motion Primera
Overview
Model Year
2010
2002
Brand
Co-Motion
Co-Motion
Model
Primera
Primera
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$3,600.00
$2,895.00
Colors
Ferrari Red, Viola Blue
—
Sizes
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
Co-Motion heat-treated zonally-butted tandem tubing
Reynolds 525
Fork
Co-Motion
Co-Motion Tandem
Fork Material
Taper Gauge Chromoly w/CNC steerer, unicrown crown
4130 chromoly, unicrown crown
Drivetrain
Component Group
Tandem Mix
Tandem Mix
Shifters
Shimano Ultegra STI
Shimano 105 STI Dual Control
Front Derailleur
Shimano Ultegra Triple
—
Rear Derailleur
Shimano Ultegra Triple
Shimano Deore XT SGS
Crankset
TruVativ Elita Tandem, 30/39/52 teeth
FSA Gossamer Tandem, 32/44/54 teeth
Bottom Bracket
TruVativ Elita GXP
FSA Ultimax ISIS
BB Shell Width
—
68mm English
Cassette
SRAM 1070
—
Rear Cogs
10-speed, 11 - 28 teeth
9-speed, 11 - 34 teeth
Chain
Kmc
1/2 x 3/32"
Pedals
Not included
Not included
Brakes
Brakes
Avid Single Digit 5 brakes, Shimano Ultegra levers
Tektro 917A (Mini V-type brakes) front/Shimano Dura-Ace Dual Pivot rear
Cockpit & Contact Points
Headset
1 1/8" threadless FSA Orbit X
1 1/8" threadless Race Face Thermo SP
Handlebar
FSA Omega 31.8 Capt., and Co-Motion Stoker
Deda 310
Handlebar Extensions
Not included
—
Stem
FSA OS-150 and Co-Motion Telescoping Stoker
Ritchey Logic Pro
Saddle
Selle Italia X2
—
Seatpost
Kalloy Seraph, 29.8mm diameter
Kalloy Uno
Wheels & Tires
Rims
Velocity Dyad
—
Spokes
—
Stainless steel, 14ga. (2.0mm) straight gauge
Spoke Nipples
—
Brass nipples
Front Tire
700 x 28c Continental Ultra Sport
—
Wheel Size
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.

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