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 Jamis Explorer 24 has a 14% lower climbing ratio than 1997 Jamis Explorer 24.
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.
Lowest1.00:1Highest3.43:1Total range343%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 24×2.1; rear size isn’t listed.
Lowest0.86:1Highest3.00:1Total range350%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 24×1.95; 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 Jamis Explorer 24
1999 Jamis Explorer 24
Overview
Model Year
1997
1999
Brand
Jamis
Jamis
Model
Explorer 24
Explorer 24
Bicycle Type
Juvenile
Juvenile mountain bike, non-suspension
Original MSRP
$239.95
$209.95
Colors
Charcoal
Lime Green, Mango Orange
Sizes
Boys 11"
Boys 13", girls 13"
Weight
28.3 lb
30.25 lb
Frameset
Frame Construction
TIG-welded
Pulse-welded
Frame Material
Chromoly main triangle/hi-tensile steel rear stays
Hi-tensile steel
Fork
Spinner
—
Fork Material
Hi-tensile steel, unicrown crown
Hi-tensile steel, unicrown crown
Drivetrain
Component Group
Shimano Altus
Mountain Mix
Shifters
Grip Shift MRX-170
Grip Shift MRX-200
Front Derailleur
Shimano Tourney TY-30, top-pull/clamp-on 28.6 mm
SR/Suntour TP16, top-pull/clamp-on 28.6mm
Rear Derailleur
Shimano Altus
Shimano Tourney TY-22
Crankset
SR XR10 aluminum, 28/38/48 teeth
SR CW-XR 17, 24/34/42 teeth
Bottom Bracket
Victor VPB-33, 118 mm spindle
Chin Haur CH-48, 110mm spindle
BB Shell Width
68mm English
68mm English
Rear Cogs
7-speed, 14 - 28 teeth
7-speed, 14 - 28 teeth
Chain
KMC UG-50, 1/2 x 3/32"
KMC Z-51, 1/2 x 3/32"
Pedals
Wellgo LU-943
Wellgo LU-943
Brakes
Brakes
Lee Chi 748C brakes, Lee Chi GL-1 levers
Tektro 823A linear-pull brakes, Tektro RBP-378A levers
Cockpit & Contact Points
Headset
1" Victor VP-H67
1" Chin Haur CH-90
Handlebar
Hsin Lung steel
Steel
Handlebar Extensions
—
Not included
Stem
Hsin Lung steel
Steel
Saddle
Viscount 9701
Viscount 9701SC
Seatpost
Pillar, steel, 26.8 mm diameter
Pillar, steel, 25.4mm diameter
Wheels & Tires
Hubs
King Kong 510 SE, nutted
Front: Jou Yu JY-731, Rear: Jou Yu JY-734
Rims
Alex VP-20, 36-hole
Sun Rims Z-19, 32-hole
Spokes
Shuhn Lih stainless steel, 2.0mm straight gauge
Shun Jiu stainless steel, 1.8mm straight gauge
Spoke Nipples
Brass nipples
Brass nipples
Front Tire
24 x 2.10" Duro HF-822
24 x 1.95" Kenda K-831
Wheel Size
24" wheels
24" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
70°
70°
Seat-tube angle
72°
73°
Chainstay / rear center
406.4 mm
410 mm
Wheelbase
988.1 mm
960 mm
Fork offset / rake
45.7 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.