Velopedia Bicycle Archive
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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 Jamis Comet and 2008 Jamis Comet.
- Data limitation
Only 2010 Jamis Comet has enough published drivetrain data for gearing calculations.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest1.56:1Highest4.82:1Total range309%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×23; rear size isn’t listed.
Gearing unavailable for this size.
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 Jamis Comet
2008 Jamis Comet
Overview
Model Year
2010
2008
Brand
Jamis
Jamis
Model
Comet
Comet
Bicycle Type
Road race & triathlon
Road race & triathlon
Original MSRP
Not documented
$1,250.00
Colors
Victory Red/Pearl White
Monterey Blue/Pearl White
Sizes
51cm, 54cm, 56cm, 58cm, 61cm
51cm, 54cm, 56cm, 58cm, 61cm
Weight
—
20.25 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Aero 7005 butted aluminum
Aero 7005 butted aluminum
Fork
Jamis Aero
Jamis Aero
Fork Material
Carbon, aero crown
Carbon/chromoly steerer, aero crown
Drivetrain
Component Group
Triathlon Mix
Triathlon Mix
Shifters
Shimano Dura-Ace SL-BS79
Shimano Dura-Ace bar-end
Front Derailleur
Shimano 105 FD-5600, braze-on
Shimano 105, braze-on
Rear Derailleur
Shimano Ultegra RD-6700
Shimano 105
Crankset
FSA Gossamer, 53/39 teeth
FSA Gossamer
Bottom Bracket
FSA Mega EXO
FSA Mega EXO
Cassette
Shimano CS-5600
Shimano 105
Rear Cogs
10-speed, 11 - 25 teeth
10-speed, 11 - 23 teeth
Chain
KMC DX10SC
SRAM PC-1030, 1/2 X 3/32"
Pedals
—
Not included
Brakes
Brakes
Tektro R725 Aero TT brakes, Tektro RX 4.1 levers
Tektro R-350 brakes, Tekto RX 4.1 levers
Cockpit & Contact Points
Headset
1 1/8" threadless FSA Internal
1" Aheadset
Handlebar
Profile Design Air Wing
Profile Design T2 Wing
Handlebar Extensions
Profile Design T2+
—
Stem
Jamis Road 3D Forged Alloy
Jamis
Saddle
Selle San Marco Ponza TT
Selle San Marco Ponza Trilon
Seatpost
Jamis Aero Carbon
Jamis Aero Carbon, 27.2mm diameter
Wheels & Tires
Hubs
Alex ALX-270
Alex ALX-270 aero
Rims
Alex ALX-270 aero, 20-hole/24-hole
Alex ALX-270 aero
Spokes
Bladed
—
Front Tire
700 x 23c Vittoria Zaffiro
700 x 23c Vittoria Zaffiro
Wheel Size
700c wheels
700c wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.