Velopedia Bicycle Archive

1998 GT GTB-1

Original specifications: Track Mix drivetrain · 700c wheels · legacy reference geometry.

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At a glance

Archive #71677

Model year: 1998
Category: Track
Original MSRP: $705.00
Sizes: 48 cm, 50 cm, 52 cm, 54 cm, 56 cm, 58 cm, 60 cm
Colors: Gloss black
Geometry: Legacy reference
In this record: 22 specifications · original MSRP · geometry

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Identification clues

1998 archived details

Published colors: Gloss black
Frame: 7000 aluminum
Original equipment: Track Mix

Clues, not proof of model year. Colors vary and components may have been replaced.

Original build7000 aluminum · Track Mix · 700c wheels

Manufacturer catalog

Published sizes and colors

7 sizes · 1 color

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

Published sizes

48 cm50 cm52 cm54 cm56 cm58 cm60 cm

Published colors

Gloss black

Frameset

Frame Construction	TIG-welded
Frame Material	7000 aluminum
Fork	GT
Fork Material	Chromoly, unicrown crown

Drivetrain

Component Group	Track Mix
Crankset	Sugino, 46 teeth
Bottom Bracket	Sugino, 103mm spindle
BB Shell Width	68mm English
Rear Cogs	1-speed, 15 teeth
Chain	Shimano Track, 1/2 x 1/8"
Pedals	Aluminum cage w/clips & straps

Cockpit & Contact Points

Headset	1" Tange
Handlebar	GT
Stem	Chromoly
Saddle	Selle Italia Eversoft
Seatpost	Aluminum micro-adjust

Wheels & Tires

Hubs	Sugino Track
Rims	Araya ADX-510, 32-hole
Spokes	Stainless steel, 2.0mm straight gauge
Spoke Nipples	Brass nipples
Front Tire	700 x 23c Maxxis
Wheel Size	700c wheels

Geometry

Legacy reference · 5 measurements

Historical measurements. Frame size unknown.

All geometry measurementsLegacy reference · 5 measurements

Measurement	Legacy reference
Top tube	575 mm
Head-tube angle	75°
Seat-tube angle	74.5°
Chainstay / rear center	385 mm
Wheelbase	964 mm

Frame size not recorded.

Gearing

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

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

All published sizes46T · 15T · 1-speed

Ratio3.07:1

Estimated speed At 90 RPM Gear21.6 mph

Uses front tire 700C×23; 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

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

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Original specifications

Front tire · Original

700 x 23c Maxxis Replacement search: 700cx23 bicycle tire Before ordering: Check rim type and tire clearance.

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Saddle · Original

Selle Italia Eversoft

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Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire: 700 x 23c Maxxis
Drivetrain: 1-speed
Bottom bracket / shell: Sugino, 103mm spindle · 68mm English

Equipment inspection checks 9 checks based on 4 archived component groups Open equipment checksClose equipment checks

Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.

Full used-bike inspection guide →

Frame and fork

Inspect the frame and fork →

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

Look for dents or shape changes and inspect the edges of welds around the head tube, bottom bracket, seat cluster and suspension mounts for hairline cracks.
Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

Drivetrain

Check drivetrain wear →

Archived: Group: Track Mix · Crankset: Sugino, 46 teeth · Bottom bracket: Sugino, 103mm spindle · Rear cogs: 1-speed, 15 teeth · Chain: Shimano Track, 1/2 x 1/8"

Check chain tension and chainline, rotate the drivetrain through a full revolution and confirm the rear axle or tensioning hardware cannot slip.
Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Wheels and tires

Check wheels and tires →

Archived: Wheel size: 700c wheels · Rims: Araya ADX-510, 32-hole · Hubs: Sugino Track · Front tire: 700 x 23c Maxxis

Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.

Controls and contact points

Archived: Headset: 1" Tange · Handlebar: GT · Stem: Chromoly · Seatpost: Aluminum micro-adjust · Saddle: Selle Italia Eversoft · Pedals: Aluminum cage w/clips & straps

Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

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

1998 GT GTB-1

Published sizes and colors

Published sizes

Published colors

Frameset

Drivetrain

Cockpit & Contact Points

Wheels & Tires

Geometry

Gearing

Gearing results

Find replacement parts

Frame and fork

Drivetrain

Wheels and tires

Controls and contact points

My Garage

Find this bike on eBay

1998 GT GTB-1

Published sizes and colors

Published sizes

Published colors

Frameset

Drivetrain

Cockpit & Contact Points

Wheels & Tires

Geometry

Gearing

Gearing results

Find replacement parts

Frame and fork

Drivetrain

Wheels and tires

Controls and contact points

Find this bike on eBay

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