Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2000 Jamis Bossy 20.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

2000 Jamis Bossy 2036T · 18T · 1-speed
Ratio2.00:1
Estimated speed at 90 RPMGear10.8 mph

Uses front tire 20×2.125; rear size isn’t listed.

1997 Jamis Bossy 20Size Legacy reference · 36T · 18T · 1-speed
Ratio2.00:1
Estimated speed at 90 RPMGear10.8 mph

Uses front tire 20×2.125; 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.

Try other gearing

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.
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Specification
2000 Jamis Bossy 20
1997 Jamis Bossy 20
Overview
Model Year
2000
1997
Brand
Jamis
Jamis
Model
Bossy 20
Bossy 20
Bicycle Type
Juvenile
Juvenile
Original MSRP
$150.00
$159.95
Colors
Metallis Periwinkle, Rose Pedal Pink
Pink, Purple
Sizes
Girls 11"
12"
Weight
—
33 lb
Frameset
Frame Construction
Pulse-welded
TIG-welded
Frame Material
Hi-tensile steel, oversize
Hi-tensile steel
Fork
Jamis
Akisu
Fork Material
Hi-tensile steel, unicrown crown
Hi-tensile steel, unicrown crown
Drivetrain
Crankset
1-piece 5 1/2", 36 teeth
1-piece 5 1/2", 36 teeth
Bottom Bracket
One piece
One piece
BB Shell Width
American
68mm Threadless
Rear Cogs
1-speed, 18 teeth
1-speed, 18 teeth
Chain
KMC 410, 1/2 x 1/8"
KMC 410, 1/2 x 1/8"
Pedals
Wellgo resin
Victor VP-810
Brakes
Brakes
—
KT coaster brake
Cockpit & Contact Points
Headset
1" steel
1" Chin Haur CH60-1
Handlebar
Jamis Cruiser
Cruiser Bend
Stem
Alloy 4 bolt
Hsin Lung MX-552
Saddle
Jamis Bossy Cruiser
Viscount 5034
Seatpost
Alloy, 25.4mm diameter
Pillar, steel, 25.4 mm diameter
Wheels & Tires
Hubs
Front: aluminum, nutted, Rear: Shimano Coaster Brake
Front: Kung Ten aluminum, nutted, Rear: Kung Ten coaster brake
Rims
Weinmann 4019, 36-hole
CMC 7X steel, 36-hole
Spokes
Stainless steel, 2.0mm straight gauge
Shuhn Lih steel, 105g straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
20 x 2.125" Jamis Bossy Streat Tread
20 x 2.125" Cheng Shin C-640
Wheel Size
20" wheels
20" wheels
Geometry · choose a size for each bicycle
Geometry size
—
Head-tube angle
—
73°
Seat-tube angle
—
71°
Chainstay / rear center
—
373.4 mm
Wheelbase
—
901.7 mm
Fork offset / rake
—
35.6 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.

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