Velopedia Bicycle Archive

1997 Ross Centaur w/fenders

Original manufacturer specifications including Shimano Nexus drivetrain, 26" wheels, geometry for 1 published size.

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What Velopedia knows

Model year
1997
Category
City & Commuter
Original MSRP
$599.95
Sizes
16", 18"
Colors
Green
Geometry
Legacy reference · Geometry context
Record coverage
32 preserved details · archived image · original MSRP · preserved geometry
Archive ID
68306
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Manufacturer catalog

Published sizes and colors

2 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

16"18"

Published colors

Green

Frameset

Frame ConstructionTIG-welded
Frame MaterialAluminum
ForkRoss
Fork MaterialChromoly, unicrown crown
Rear ShockN/A

Drivetrain

Component GroupShimano Nexus
ShiftersShimano Inter-7 ST-7S20
Front DerailleurN/A
Rear DerailleurN/A
CranksetDotek aluminum, 36 teeth
Bottom BracketYST BB 621, 122.5 mm spindle
BB Shell Width68mm English
Rear Cogs7-speed internal, 21 teeth
ChainKMC 410, 1/2 x 1/8"
PedalsResin

Brakes

BrakesShimano Nexus Roller brake/Shimano Altus front brakes, aluminum levers

Cockpit & Contact Points

Headset1" YST 665
HandlebarSteel
Handlebar ExtensionsN/A
StemSameness chromoly
SaddleViscount 6000 w/springs
SeatpostAluminum micro-adjust, 25.4 mm diameter

Wheels & Tires

HubsFront: Shimano Altus, Rear: Shimano Nexus Roller brake
RimsAlex 7X, 36-hole
SpokesRichman stainless steel, 2.0mm straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 1.75" Ross
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 6 measurements

Historical model-level geometry recovered from Velopedia’s original archive database. The source does not identify which listed frame size this reference describes, so fit interpretation is intentionally limited and no size-normalized Archive Context is generated.

MeasurementLegacy reference
Top tube565 mm
Head-tube angle71°
Seat-tube angle72°
Chainstay / rear center432 mm
Wheelbase1038 mm
Fork offset / rake45 mm

Geometry source: Historical archive database — model-level reference geometry. The historical source provides one model-level geometry set and does not identify the corresponding frame size.

Geometry tools

Explore this historical geometry

Model-level historical reference

Period context: At 71°, the head angle sits somewhat steeper than typical among city & commuter geometries represented in Velopedia for this period. Its 72° seat angle is somewhat more relaxed than typical among the same-period city & commuter references.

Compared with 38 distinct legacy city & commuter geometries from model years 1995–1999. Only angular measurements are used because the historical reference frame size is unidentified.
See it in periodOpen an immediate comparison with preserved 1997 city & commuter geometries. The source frame size remains unidentified.
See its 1997 geometry context

Parts & serviceability

Find replacement parts

3 top part searches
ShiftersExact archived part
Shimano Inter-7 ST-7S20 Exact archived model
SeatpostMatching fit standard
25.4 mm seatpost Published diameter — verify length and setback
RimsQualified part search
Alex 7X, 36-hole Named archived component — verify dimensions

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.

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Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
  • BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
  • DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 7-speed system.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 1997 Ross Centaur w/fenders · City/commuter · Published sizes: 16", 18"

Archived: Frame: TIG-welded · Fork: Ross · Chromoly, unicrown crown

Archived: Group: Shimano Nexus · Shifters: Shimano Inter-7 ST-7S20 · Crankset: Dotek aluminum, 36 teeth · Bottom bracket: YST BB 621, 122.5 mm spindle · Rear cogs: 7-speed internal, 21 teeth · Chain: KMC 410, 1/2 x 1/8"

Archived: Brakes: Shimano Nexus Roller brake/Shimano Altus front brakes, aluminum levers

Archived: Wheel size: 26" wheels · Rims: Alex 7X, 36-hole · Hubs: Front: Shimano Altus, Rear: Shimano Nexus Roller brake · Front tire: 26 x 1.75" Ross

Controls and contact points

Archived: Headset: 1" YST 665 · Handlebar: Steel · Stem: Sameness chromoly · Seatpost: Aluminum micro-adjust, 25.4 mm diameter · Saddle: Viscount 6000 w/springs · Pedals: Resin

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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