Lowest1.20:1
Highest4.33:1
Total range361%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 700C×23; rear size isn’t listed.
Velopedia Bicycle Archive
1999 Diamondback Expert
Original specifications: Shimano RSX drivetrain · 700c wheels · 24.5 lb published weight.
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At a glance
Archive #83267- Model year
- 1999
- Category
- Road
- Original MSRP
- $699.99
- Sizes
- 19", 21", 23", 25"
- Colors
- Midnight Blue
- Weight
- 24.5 lb
- Geometry
- Legacy reference
- In this record
- 26 specifications · archived image · original MSRP · geometry
Model history 7 other years
Browse other years
Compare side by side
Identification clues
1999 archived details
- Published colors
- Midnight Blue
- Frame
- 7005 aluminum w/replaceable derailleur hanger
- Original equipment
- Shimano RSX
Clues, not proof of model year. Colors vary and components may have been replaced.
Original build7005 aluminum w/replaceable derailleur hanger · Shimano RSX · 700c wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | 7005 aluminum w/replaceable derailleur hanger |
| Fork | Diamondback |
| Fork Material | Chromoly, unicrown crown |
Drivetrain
| Component Group | Shimano RSX |
|---|---|
| Shifters | Shimano RSX STI Dual Control |
| Front Derailleur | Shimano RSX, bottom-pull/clamp-on 31.8mm |
| Rear Derailleur | Shimano RSX GS |
| Crankset | Shimano RSX, 30/42/52 teeth |
| Bottom Bracket | Shimano BB-LP27, 118mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 8-speed, 12 - 25 teeth |
| Chain | Shimano CN-IG51, 1/2 x 3/32" |
| Pedals | Wellgo aluminum |
Brakes
| Brakes | Shimano RX-100 Dual Pivot brakes, Shimano RSX levers |
|---|
Cockpit & Contact Points
| Headset | 1" Tien Hsin |
|---|---|
| Handlebar | Kalloy AL-038 |
| Stem | Lee Chi |
| Saddle | Diamondback Sport |
| Seatpost | Kalloy SP-339, 27.2mm diameter |
Wheels & Tires
| Hubs | Shimano RSX |
|---|---|
| Rims | Alex DA-16, 32-hole |
| Spokes | Shuhn Lih stainless steel, 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 700 x 23c Continental Super Sport 100 |
| Wheel Size | 700c wheels |
No specifications match. Try a component name or clear your search.
Geometry
Historical measurements. Frame size unknown.
Reference drawing
Size
Measurement
Measurement
—
Select an available measurement to locate it on the frame.
All geometry measurementsLegacy reference · 6 measurements
| Measurement | Legacy reference |
|---|---|
| Top tube | 546.1 mm |
| Head-tube angle | 72° |
| Seat-tube angle | 73.5° |
| Chainstay / rear center | 414 mm |
| Wheelbase | 993.1 mm |
| Fork offset / rake | 45 mm |
Frame size not recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
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 your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| 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
Find replacement parts
Shimano CN-IG51
1/2 x 3/32"
Retailer offers
SRAM PC-830 Chain One Color, 8 Speed
Replacement option
Shimano CN-IG51 on eBaySponsored links
700 x 23c Continental Super Sport 100
Retailer offers
Vittoria Rubino Pro G2.0 Clincher Tire Black, 700x23
700x23c
Replacement option
Continental Super Sport 100 on eBaySponsored links
Kalloy SP-339
27.2mm diameter
Retailer offers
Race Face Ride XC Seatpost Black, 27.2x375mm
Replacement option
More parts (5)Fewer parts
Shimano BB-LP27
118mm spindle
Shimano RSX
30/42/52 teeth
Kalloy AL-038
Alex DA-16
32-hole
Shimano RSX
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- 700 x 23c Continental Super Sport 100
- Drivetrain
- 8-speed
- Seatpost diameter
- 27.2 mm
- Bottom bracket / shell
- Shimano BB-LP27, 118mm spindle · 68mm English
Equipment inspection checks 10 checks based on 5 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: Diamondback · Chromoly, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Group: Shimano RSX · Shifters: Shimano RSX STI Dual Control · Front derailleur: Shimano RSX, bottom-pull/clamp-on 31.8mm · Rear derailleur: Shimano RSX GS · Crankset: Shimano RSX, 30/42/52 teeth · Bottom bracket: Shimano BB-LP27, 118mm spindle · Rear cogs: 8-speed, 12 - 25 teeth · Chain: Shimano CN-IG51, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Shimano RX-100 Dual Pivot brakes, Shimano RSX levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c wheels · Rims: Alex DA-16, 32-hole · Hubs: Shimano RSX · Front tire: 700 x 23c Continental Super Sport 100
Controls and contact points
Archived: Headset: 1" Tien Hsin · Handlebar: Kalloy AL-038 · Stem: Lee Chi · Seatpost: Kalloy SP-339, 27.2mm diameter · Saddle: Diamondback Sport · Pedals: Wellgo aluminum
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.