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.
No key difference could be established from the available data. Check the full table for the details.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest1.00:1Highest4.73:1Total range473%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×26; rear size isn’t listed.
Lowest1.00:1Highest4.50:1Total range450%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×30; 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
1997 Burley Rumba
1996 Burley Rumba
Overview
Model Year
1997
1996
Brand
Burley
Burley
Model
Rumba
Rumba
Bicycle Type
Tandem (road)
Tandem (road)
Original MSRP
$1,600.00
$1,600.00
Colors
Jet black
Black
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
40.2 lb
40.2 lb
Frameset
Frame Construction
TIG-welded
TIG-welded steel
Frame Material
True Temper Tandem chromoly, butted
True Temper chromoly, oversize
Fork
Burley
Burley Tandem
Fork Material
True Temper Tandem chromoly, unicrown crown
True Temper 4130 chromoly, oversize, unicrown crown
Drivetrain
Shifters
Shimano 105SC bar-end
Shimano 600 Ultegra bar-end
Front Derailleur
Sachs Centera, bottom-pull/clamp-on 28.6 mm
Sachs Centera, bottom-pull
Rear Derailleur
Shimano STX-RC
Shimano STX-RC
Crankset
Sugino Fuse Tandem, 28/42/52 teeth
Sugino Fuse Tandem, 28/44/54 teeth
Bottom Bracket
Burley Tandem precision sealed, 117 mm spindle
Precision sealed cartridge bearings, 117 mm spindle
BB Shell Width
82mm Threadless
72mm front/84mm rear
Rear Cogs
7-speed, 11 - 28 teeth
7-speed, 12 - 28 teeth
Chain
Shimano CN-HG50, 1/2 x 3/32"
Shimano CN-HG70, 1/2 x 3/32"
Pedals
Aluminum cage w/clips & straps
Mks
Brakes
Brakes
Shimano Alivio M-System brakes, Shimano RX-100 levers
Shimano Alivio M-System brakes, Shimano RX-100 levers
Cockpit & Contact Points
Headset
1 1/8" Tange-Seiki Avenger
1 1/8" Tange-Seiki Avenger OS-H2
Handlebar
Burley aluminum drop
Hsin Lung alloy
Stem
Burley chromoly
Burley, chromoly
Saddle
Vetta Comfort
Vetta Comfort Torino
Seatpost
Aluminum micro-adjust, 26.6 mm diameter
Kalloy alloy, 26.6 mm diameter
Wheels & Tires
Hubs
Shimano Tandem
—
Rims
Sun Rims CRT16 II, 48-hole
Sun Metal CRT16 II, 48-hole
Spokes
Marwi stainless steel, 2.0mm straight gauge
Union stainless steel, 2.0mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
700 x 26c Specialized Transition
700 x 30c IRC Tandem
Wheel Size
700c wheels
700c wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
73°
73°
Seat-tube angle
73°
—
Chainstay / rear center
438 mm
438 mm
Wheelbase
1730 mm
1730 mm
Fork offset / rake
55 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.