Lowest1.00:1
Highest4.00:1
Total range400%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 26×1.5; rear size isn’t listed.
Velopedia Bicycle Archive
1993 Miyata DuplicRoss
Original specifications: Shimano Deore LX drivetrain · 26" wheels · 41 lb published weight.
Planning to sell? Draft your listing
No archive photo is available for this record.
At a glance
Archive #42823- Model year
- 1993
- Category
- Tandem
- Original MSRP
- $1,480.00
- Sizes
- 16/18, 18/20
- Weight
- 41 lb
- Geometry
- Legacy reference
- In this record
- 20 specifications · original MSRP · geometry
Original buildTandem gauge chrome-moly · Shimano Deore LX · 26" wheels
Frameset
| Frame Construction | TIG-welded steel |
|---|---|
| Frame Material | Tandem gauge chrome-moly |
| Fork | OS chrome-moly |
Drivetrain
| Component Group | Shimano Deore LX |
|---|---|
| Shifters | Shimano Deore DX thumbshifters |
| Front Derailleur | Shimano Deore LX |
| Rear Derailleur | Shimano Deore LX |
| Crankset | Shimano Deore DX, 28/38/48 teeth |
| Rear Cogs | 7-speed, 12 - 28 teeth |
| Chain | Shimano Hyperglide |
| Pedals | Shimano Deore LX |
Brakes
| Brakes | Scott/Pederson self energizing with Odyssey booster plate brakes, levers |
|---|
Cockpit & Contact Points
| Handlebar | Alloy |
|---|---|
| Stem | TIG CroMo/adj. stoker |
| Saddle | Vetta Shock Absorber |
| Seatpost | Kalloy CroMo |
Wheels & Tires
| Hubs | Shimano Deore LX |
|---|---|
| Rims | Araya RM-17 |
| Front Tire | 26 x 1.50" Kenda |
| Wheel Size | 26" 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 · 4 measurements
| Measurement | Legacy reference |
|---|---|
| Head-tube angle | 72° |
| Seat-tube angle | 72° |
| Chainstay / rear center | 434.3 mm |
| Wheelbase | 1775.5 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
26 x 1.50" Kenda
Replacement search: 26x1.5 bicycle tire Before ordering: Check rim type and tire clearance.
Shimano Deore LX
Shimano Deore DX
28/38/48 teeth
More parts (5)Fewer parts
Shimano Deore LX
Shimano Deore LX
Shimano Deore DX thumbshifters
Kalloy CroMo
Shimano Deore LX
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
- 26 x 1.50" Kenda
- Drivetrain
- 7-speed
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 steel · Fork: OS chrome-moly
Drivetrain
Check drivetrain wear →Archived: Group: Shimano Deore LX · Shifters: Shimano Deore DX thumbshifters · Front derailleur: Shimano Deore LX · Rear derailleur: Shimano Deore LX · Crankset: Shimano Deore DX, 28/38/48 teeth · Rear cogs: 7-speed, 12 - 28 teeth · Chain: Shimano Hyperglide
Brakes
Inspect the brakes →Archived: Brakes: Scott/Pederson self energizing with Odyssey booster plate brakes, levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Araya RM-17 · Hubs: Shimano Deore LX · Front tire: 26 x 1.50" Kenda
Controls and contact points
Archived: Handlebar: Alloy · Stem: TIG CroMo/adj. stoker · Seatpost: Kalloy CroMo · Saddle: Vetta Shock Absorber · Pedals: Shimano Deore LX
Have you owned this model?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Find this bike on eBay
Search eBay US; check the model year, size and installed components. We may earn a commission from purchases.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.