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.
- Handling
1999 Diamondback Interval has a 1.0° slacker head-tube angle than 1997 Diamondback Interval in the archived geometry. Frame size is not identified for 1997 Diamondback Interval and 1999 Diamondback Interval.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
- Gearing
1999 Diamondback Interval has a 38% lower climbing ratio than 1997 Diamondback Interval.
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.
Lowest1.62:1Highest4.00:1Total range248%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×25; rear size isn’t listed.
Lowest1.00:1Highest4.36:1Total range436%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 700C×23.
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
1997 Diamondback Interval
1999 Diamondback Interval
Overview
Model Year
1997
1999
Brand
Diamondback
Diamondback
Model
Interval
Interval
Bicycle Type
Road/sport
Road/sport
Original MSRP
$420.00
$479.99
Colors
Black
Forest Green
Sizes
19", 21", 23", 25"
19", 21", 23", 25"
Weight
25 lb
26.5 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Chromoly main triangle/hi-tensile steel rear stays
Chromoly
Fork
Spinner
Diamondback
Fork Material
Chromoly, unicrown crown
Chromoly, unicrown crown
Drivetrain
Component Group
Shimano 300EX
Shimano RSX
Shifters
Shimano 300EX down-tube
Shimano RSX STI Dual Control
Front Derailleur
Shimano 300EX, bottom-pull/clamp-on 28.6 mm
Shimano RSX top-swing, bottom-pull/clamp-on 28.6mm
Rear Derailleur
Shimano 300EX
Shimano Alivio
Crankset
Tracer, 42/52 teeth
Shimano Nexave T-301, 28/38/48 teeth
Bottom Bracket
Shimano BB-LP26, 107 mm spindle
Tien Hsin BB-7700, 116mm spindle
BB Shell Width
68mm English
68mm English
Rear Cogs
7-speed, 13 - 26 teeth
7-speed, 11 - 28 teeth
Chain
KMC UG-50, 1/2 x 3/32"
KMC Z-51, 1/2 x 3/32"
Pedals
Wellgo LU-871
Wellgo aluminum
Brakes
Brakes
Shimano 300EX brakes, Shimano 300EX levers
Shimano RX-100 Dual Pivot brakes, Shimano RSX levers
Cockpit & Contact Points
Headset
1" YST
1" YST steel
Handlebar
Hsin Lung steel
Kalloy AL-038
Stem
Kalloy aluminum
JD aluminum
Saddle
Avenir
Diamondback all-terrain
Seatpost
Avenir aluminum, 26.8 mm diameter
Aluminum micro-adjust, 26.0mm diameter
Wheels & Tires
Hubs
Jou Yu aluminum, QR
Joy Tech aluminum, Q/R
Rims
Araya RT-520, 32-hole
Alex DA-16, 32-hole
Spokes
Stainless steel, 2.0mm straight gauge
Shuhn Lih stainless steel, 2.0mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
700 x 25c Cheng Shin C-732
700 x 28c Continental Super Sport 100
Rear Tire
—
700 x 23c Continental Super Sport 100
Wheel Size
700c wheels
700c wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
73°
72°
Seat-tube angle
73°
73.5°
Chainstay / rear center
419.1 mm
419.1 mm
Wheelbase
1016 mm
1005.8 mm
Fork offset / rake
40 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.