Author Dynasty

2018 UrbanCommuter Manufacturer page

Fork travel: 50 mm
Wheels: 700c
Drivetrain: 3 × 8 24–42t / 12–32t
Gear range: 467%
Weight: 16.7 kg 36.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

17" 155–169
19" 167–182

Components

16 of 20 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

alloy 6061 700c (L) Not identified

Suspension

1 part

Fork
- RST

Drivetrain

6 parts

Cassette
- Shimano CS-HG200-8 8 speeds
CS-HG200
Chain
- KMC
Crankset
- Prowheel
Front derailleur
- Shimano Tourney TX FD-TX800 3 speeds
FD-TX800
Rear derailleur
- Shimano Acera
Shifters
- Shimano Altus

Brakes

1 part

Brakes
- Tektro

Wheels and tires

5 parts

Front hub
- Shimano
Rear hub
- Shimano
Rims
- Author
Spokes

black stainless steel 2.0 mm Not identified
Tires
- CST

Cockpit and contact points

6 parts

Grips
- Author
Handlebar
- Kalloy
Pedals
- Author
Saddle
- Author
Seatpost

UNO suspension (27.2) Not identified
Stem

UNO adjustable Not identified

Sizes and geometry

2 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 17"

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Top tube lengthmm	536	568
Seat tube lengthmm	432	483
Head tube lengthmm	160	160
Head tube angle	69°	69°
Seat tube angle	75°	75°
Chainstay lengthmm	459	459
Wheelbasemm	1091	1125
Front centermm	637	671
Bottom bracket dropmm	50	50
Fork rakemm	44	44
Suspension and parts
Crank lengthmm	152	127
Handlebar widthmm	580	560
Stem lengthmm	80	45

Not published by the manufacturer: Reach, Stack, Bottom bracket height, Standover height, Trail, Stack/reach ratio, Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 16.7 kg

36.8 lb

Suspension

Suspension configuration: Hardtail
Front travel: 50 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 8
Smallest sprocket: 12
Largest sprocket: 32
Lowest gear: 21.8 in
Highest gear: 101.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: suspension
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 40c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

21.8 gear inches

This value is below the central range for this class.

Cohort: Urban / Commuter Model year: 2018
Sample: 142 bicycles with this information
Coverage: 75.5% of the class

Highest gear

101.5 gear inches

This value is within the central range for this class.

Cohort: Urban / Commuter Model year: 2018
Sample: 142 bicycles with this information
Coverage: 75.5% of the class

Shifting

Mechanical

4 of 188 bicycles with this information use electronic shifting.

Cohort: Urban / Commuter Model year: 2018
Sample: 188 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.3 km/h
Highest gear: 38.9 km/h

Total gear range 467%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 21.8–101.5 gear inches
Class reference (p10–p90): 17.7–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Commuter Model year: 2018
Lowest gear: 142 bicycles with this information, 75.5% of the class
Highest gear: 142 bicycles with this information, 75.5% of the class