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.
- Handling
1999 Diamondback Expert has a 1.0° slacker head-tube angle than 1998 Diamondback Expert in the archived geometry. Frame size is not identified for 1999 Diamondback Expert and 1998 Diamondback Expert.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
- Gearing
1998 Diamondback Expert has a 10% lower climbing ratio than 1999 Diamondback Expert.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest1.20:1Highest4.33:1Total range361%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×23; rear size isn’t listed.
Lowest1.08:1Highest4.18:1Total range386%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×23; 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
1999 Diamondback Expert
1998 Diamondback Expert
Overview
Model Year
1999
1998
Brand
Diamondback
Diamondback
Model
Expert
Expert
Bicycle Type
Road/sport
Road/sport
Original MSRP
$699.99
$600.00
Colors
Midnight Blue
Silver pearl
Sizes
19", 21", 23", 25"
19", 21", 23", 25"
Weight
24.5 lb
25 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
7005 aluminum w/replaceable derailleur hanger
Chromoly
Fork
Diamondback
Diamondback
Fork Material
Chromoly, unicrown crown
Chromoly, unicrown crown
Drivetrain
Component Group
Shimano RSX
Shimano RSX
Shifters
Shimano RSX STI Dual Control
Shimano RX-100 STI Dual Control
Front Derailleur
Shimano RSX, bottom-pull/clamp-on 31.8mm
Shimano RSX top-swing, bottom-pull/clamp-on 28.6mm
Rear Derailleur
Shimano RSX GS
Shimano RSX SS
Crankset
Shimano RSX, 30/42/52 teeth
Shimano RSX, 26/36/46 teeth
Bottom Bracket
Shimano BB-LP27, 118mm spindle
Shimano BB-LP26, 110mm spindle
BB Shell Width
68mm English
68mm English
Rear Cogs
8-speed, 12 - 25 teeth
7-speed, 11 - 24 teeth
Chain
Shimano CN-IG51, 1/2 x 3/32"
Sachs PC-10, 1/2 x 3/32"
Pedals
Wellgo aluminum
Wellgo LU-301 w/clips & straps
Brakes
Brakes
Shimano RX-100 Dual Pivot brakes, Shimano RSX levers
Shimano 300EX brakes, Shimano RSX levers
Cockpit & Contact Points
Headset
1" Tien Hsin
1" Tioga Expert
Handlebar
Kalloy AL-038
Diamondback aluminum
Stem
Lee Chi
Diamondback
Saddle
Diamondback Sport
Avenir Sport Master
Seatpost
Kalloy SP-339, 27.2mm diameter
Avenir aluminum micro-adjust, 26.0mm diameter
Wheels & Tires
Hubs
Shimano RSX
Shimano RSX
Rims
Alex DA-16, 32-hole
Alex DA-16, 32-hole
Spokes
Shuhn Lih stainless steel, 2.0mm straight gauge
Orient stainless steel, 2.0mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
700 x 23c Continental Super Sport 100
700 x 23c Continental Super Sport
Wheel Size
700c wheels
700c wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
72°
73°
Seat-tube angle
73.5°
73°
Chainstay / rear center
414 mm
419.1 mm
Wheelbase
993.1 mm
1016 mm
Fork offset / rake
45 mm
45 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.