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. Gearing

    1995 Jamis Ukiah has a 14% lower climbing ratio than 1993 Jamis Ukiah.

    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.

1993 Jamis UkiahSize Legacy reference · 48/38/28T · 12–28T · 7-speed
Lowest1.00:1Highest4.00:1Total range400%
Estimated speed at 90 RPMLowest gear7.0 mphHighest gear28.1 mph

Uses front tire 26×2.1; rear size isn’t listed.

1995 Jamis UkiahSize Legacy reference · 42/34/24T · 11–28T · 7-speed
Lowest0.86:1Highest3.82:1Total range445%
Estimated speed at 90 RPMLowest gear6.0 mphHighest gear26.6 mph

Uses front tire 26×2; 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
1993 Jamis Ukiah
1995 Jamis Ukiah
Overview
Model Year
1993
1995
Brand
Jamis
Jamis
Model
Ukiah
Ukiah
Bicycle Type
Mountain bike, non-suspension
Mountain bike, non-suspension
Original MSRP
$365.00
$359.95
Colors
—
Gray, Royal Blue
Sizes
16, 17.5, 19.5, 21.5, 17.5WM
14.5", 16", 17.5", 19.5", 21.5", womens 17.5"
Weight
29.9 lb
29.3 lb
Frameset
Frame Construction
TIG-welded steel
TIG-welded steel
Frame Material
MTB chrome-moly main tubes
Tange chromoly main triangle
Fork
Chrome-moly unicrown
Akisu
Fork Material
—
Chromoly, unicrown crown
Drivetrain
Component Group
Shimano Altus C20
Shimano Alivio/AceraX
Shifters
Shimano Altus C10 Rapidfire Plus
Grip Shift MRX-100
Front Derailleur
Shimano Altus C20
Shimano Alivio, bottom-pull/clamp-on 28.6 mm
Rear Derailleur
Shimano Altus C10
Shimano Alivio SGS
Crankset
Shimano Altus C20, 28/38/48 teeth
Shimano AceraX, 24/34/42 teeth
Rear Cogs
7-speed, 12 - 28 teeth
7-speed, 11 - 28 teeth
Chain
Shimano CN-HG50
Shimano CN-UG50, 1/2 x 3/32"
Pedals
Wellgo Low Profile High Impact Resin
Wellgo LU-922
Brakes
Brakes
Shimano Altus C20 brakes, levers
Shimano AceraX brakes, Chang Star 274A levers
Cockpit & Contact Points
Headset
—
1" YST Sealed Tech
Handlebar
Jamis Bulge Bar
Jamis Bulge Bar
Handlebar Extensions
—
Not included
Stem
Jamis Chromoly, Drilled Stop
Jamis chromoly
Saddle
Jamis/Viscount ATB Anatomical
Jamis
Seatpost
300mm w/Quick Release
Polygon PM-215, 26.8 mm diameter
Wheels & Tires
Hubs
Shimano Exage
Shimano AceraX
Rims
Weinmann 2719, 36-hole
Weinmann 4019, 36-hole
Spokes
—
Stainless steel, straight gauge
Spoke Nipples
—
Brass nipples
Front Tire
26 x 2.10" Kenda
26 x 2.00" Hwa Fong
Wheel Size
26" wheels
26" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
70°
70°
Seat-tube angle
70°
73°
Chainstay / rear center
429.3 mm
429.3 mm
Wheelbase
1050.8 mm
1051.6 mm
Fork offset / rake
48.3 mm
50.8 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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