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 PeriScope Torpedo 26 and 2007 Co-Motion Periscope Torpedo 26.

  2. Gearing

    2007 Co-Motion Periscope Torpedo 26 has a 18% lower climbing ratio than 2010 Co-Motion PeriScope Torpedo 26.

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

  3. Identity & price

    2007 Co-Motion Periscope Torpedo 26 had an original MSRP $705 lower than 2010 Co-Motion PeriScope Torpedo 26.

    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 PeriScope Torpedo 2653/39/30T · 11–28T · 10-speed
Lowest1.07:1Highest4.82:1Total range450%
Estimated speed at 90 RPMLowest gear7.2 mphHighest gear32.5 mph

Rear tire: 26×1.6.

2007 Co-Motion Periscope Torpedo 2653/42/30T · 11–34T · 10-speed
Lowest0.88:1Highest4.82:1Total range546%
Estimated speed at 90 RPMLowest gear5.9 mphHighest gear32.3 mph

Uses front tire 26×1.5; 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 PeriScope Torpedo 26
2007 Co-Motion Periscope Torpedo 26
Overview
Model Year
2010
2007
Brand
Co-Motion
Co-Motion
Model
PeriScope Torpedo 26
Periscope Torpedo 26
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$4,100.00
$3,395.00
Colors
Choice of 30 standard PPG
Choice of 30 standard PPG
Sizes
S, larger
S, L
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Co-Motion zonally-butted tandem tubing
Co-Motion zonally-butted tandem tubing
Fork
Co-Motion
Co-Motion
Fork Material
Chromoly, aero crown
Chromoly, aero crown
Drivetrain
Component Group
Tandem Mix
Tandem Mix
Shifters
Shimano Ultegra
Shimano Ultegra
Front Derailleur
Shimano Ultegra Triple
Shimano Ultegra
Rear Derailleur
Shimano Ultegra Triple
Shimano XTR
Crankset
FSA Gossamer Tandem, 30/39/53 teeth
FSA Gossamer Mega Exo, 30/42/53 teeth
Bottom Bracket
FSA Gossamer MegaExo
FSA Gossamer MegaExo
Cassette
SRAM 1070
—
Rear Cogs
10-speed, 11 - 28 teeth
10-speed, 11 - 34 teeth
Chain
KMC 10spd + timing chain
KMC X10
Pedals
Not included
Not included
Brakes
Brakes
Avid BB-7 mechanical disk w/203mm rotor brakes, Shimano Ultegra levers
Avid BB-7 mechanical disk w/203mm rotor brakes, Shimano Ultegra levers
Cockpit & Contact Points
Headset
1.5" Reducer to 1 1/8", semi-integrated FSA Orbit Extreme Pro 1.5
1 1/8" threadless FSA Orbit Extreme
Handlebar
FSA Omega 31.8 Capt., and Co-Motion Stoker
FSA RD-300
Handlebar Extensions
Not included
Not included
Stem
FSA OS-150
FSA OS-150
Saddle
Selle Italia X2 Men's & Women's
Selle Royale Dardo
Seatpost
Kalloy Seraph, 29.8mm diameter
Kalloy Seraph, 29.8mm diameter
Wheels & Tires
Hubs
DT Swiss 540
DT Hugi
Rims
Velocity Aeroheat, 36-hole
Velocity Aerohead
Spokes
DT Swiss, 14ga. (2.0mm)
DT Swiss, 14ga. (2.0mm)
Front Tire
26 x 1.60" Continental Sport Contact
26 x 1.50" Schwalbe Marathon Racer
Rear Tire
26 x 1.6" Continental Sport Contact
—
Wheel Size
26" wheels
26" wheels

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

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