Author Compact

2019 UrbanHybrid Manufacturer page

Fork travel: 80 mm
Wheels: 29″
Drivetrain: 3 × 7 28–48t / 14–28t
Gear range: 343%
Weight: 14.4 kg 31.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

18" 165–178
20" 175–188
22" 185–200

Components

13 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 29" Not identified

Suspension

1 part

Fork
- RST

Drivetrain

6 parts

Cassette
- Shimano Tourney TZ MF-TZ500
MF-TZ500
Chain
- KMC Z7 7 speeds
Crankset
- Prowheel
Front derailleur
- Shimano Tourney FD-TY500
FD-TY500
Rear derailleur
- Shimano Tourney RD-TY500 7 speeds
RD-TY500
Shifters
- Shimano

Brakes

1 part

Brakes
- Tektro

Wheels and tires

5 parts

Front hub

QUANDO 36 holes Not identified
Rear hub

QUANDO 36 holes Not identified
Rims

alloy 36 holes Not identified
Spokes

steel Not identified
Tires
- Author

Cockpit and contact points

6 parts

Grips
- Author
Handlebar

steel 20 mm 660mm Not identified
Pedals

resin Not identified
Saddle
- Author
Seatpost
- Zoom
Stem
- Zoom

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 20"

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	580	600	620
Seat tube lengthmm	457	508	559
Head tube lengthmm	130	150	160
Head tube angle	70.5°	71°	71.5°
Seat tube angle	73.5°	73.5°	73°
Chainstay lengthmm	450	450	450
Wheelbasemm	1090	1111	1114
Front centermm	647	668	671
Bottom bracket dropmm	60	60	60
Fork rakemm	51	51	51

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 14.4 kg

31.7 lb

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 28
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 28
Lowest gear: 29.0 in
Highest gear: 99.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 1.75″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

2 measures

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

Lowest gear

29.0 gear inches

This value is within the central range for this class.

Cohort: Urban / Hybrid Model year: 2019
Sample: 287 bicycles with this information
Coverage: 84.4% of the class

Highest gear

99.4 gear inches

This value is within the central range for this class.

Cohort: Urban / Hybrid Model year: 2019
Sample: 287 bicycles with this information
Coverage: 84.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.1 km/h
Highest gear: 38.1 km/h

Total gear range 343%

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: 29.0–99.4 gear inches
Class reference (p10–p90): 19.6–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Hybrid Model year: 2019
Lowest gear: 287 bicycles with this information, 84.4% of the class
Highest gear: 287 bicycles with this information, 84.4% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Changes since 2018

Changes since 2018
Specification	2018 Author Compact	This bicycle Author Compact
Frame
Bicycle weight	13.8 kg	14.4 kg
Suspension
Front travel	60 mm	80 mm
Drivetrain
Rear sprockets	Not informed	7
Other specifications
Tire width	42c	1.75″
Wheel size	700c	29″
Fork spring	Not informed	Coil