- Frame
- True Temper Tandem chromoly, Burley Exclusive
- Groupset
- Tandem Mix
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.
- Gearing
1999 Burley Duet has a 6% lower climbing ratio than 1997 Burley Duet.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
- Identity & price
1997 Burley Duet had an original MSRP $274 lower than 1999 Burley Duet.
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.
Lowest0.94:1Highest4.82:1Total range514%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×25; rear size isn’t listed.
Lowest1.00:1Highest4.73:1Total range473%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×26; 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 Burley Duet
1997 Burley Duet
Overview
Model Year
1999
1997
Brand
Burley
Burley
Model
Duet
Duet
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$2,249.00
$1,975.00
Colors
Hotrod Red
Hot rod red
Sizes
Captain 20.5"/stoker 18", captain 22"/stoker 19.5", captain 23.5"/stoker 21"
Captain 20.5"/stoker 18", captain 22"/stoker 19.5", captain 23.5"/stoker 21
Weight
40.5 lb
40.2 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
True Temper Tandem chromoly, Burley Exclusive
True Temper Tandem chromoly, butted
Fork
Burley
Burley
Fork Material
True Temper Tandem chromoly, Burley exclusive, unicrown crown
True Temper Tandem chromoly, unicrown crown
Drivetrain
Component Group
Tandem Mix
—
Shifters
Shimano 105 STI Dual Control
Shimano 600 Ultegra bar-end
Front Derailleur
Shimano 105, bottom-pull/clamp-on 28.6mm
Sachs Centera, bottom-pull/clamp-on 28.6 mm
Rear Derailleur
Shimano Deore XT SGS
Shimano Deore XT SGS
Crankset
Shimano 105, 30/42/53 teeth
Sugino Fuse Tandem, 28/42/52 teeth
Bottom Bracket
Burley Tandem precision sealed, 121mm spindle
Burley Tandem precision sealed, 117 mm spindle
BB Shell Width
82mm Special Tandem
82mm Threadless
Rear Cogs
9-speed, 11 - 32 teeth
8-speed, 11 - 28 teeth
Chain
Shimano CN-HG72, 1/2 x 3/32"
Shimano CN-HG50, 1/2 x 3/32"
Pedals
Ritchey Logic
Wellgo WPD-700 (clipless)
Brakes
Brakes
Tektro 917A brakes, Shimano 105 STI levers
Shimano Deore LX M-System brakes, Shimano RX-100 levers
Cockpit & Contact Points
Headset
1 1/8" threadless Ritchey Logic
1 1/8" Tange-Seiki Avenger
Handlebar
Ritchey Road Logic Comp
Burley aluminum drop
Handlebar Extensions
Not included
—
Stem
Burley chromoly/Ritchey CompLite
Burley chromoly
Saddle
Selle Italia Future Race
Vetta SL, manganese rails/Vetta SL womens,manganese rails
Seatpost
Ritchey Expert, 26.6mm diameter
Aluminum micro-adjust, 26.6 mm diameter
Wheels & Tires
Hubs
Shimano Tandem HF-07
Shimano Tandem
Rims
Front: Bontrager Fairlane Symmetric, Rear: Bontrager Fairlane Asymmetric, 48-hole
Sun Rims CRT16 II, 48-hole
Spokes
Wheelsmith stainless steel, 2.0mm straight gauge
Marwi stainless steel, 2.0mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
700 x 25c Ritchey Tom Slick
700 x 26c Specialized Transition
Wheel Size
700c wheels
700c wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
73°
73°
Seat-tube angle
73°
73°
Chainstay / rear center
438 mm
438 mm
Wheelbase
1730 mm
1730 mm
Fork offset / rake
42 mm
55 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.