Author Traction ASL

2015 MountainCross-country Manufacturer page

Fork travel: 100 mm
Wheels: 27.5″
Drivetrain: 3 × 9 22–40t / 11–34t
Gear range: 562%
Weight: 13.4 kg 29.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

16" 148–162
18" 160–175
20" 173–185

Components

18 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

double butted alloy 6061 27.5" (ASL) - hydroforming Not identified

Suspension

1 part

Fork
- RST

Drivetrain

6 parts

Brakes

1 part

Brakes
- Tektro Gemini

Wheels and tires

5 parts

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

black stainless steel 2.0 mm Not identified
Tires
- Vittoria

Cockpit and contact points

6 parts

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 18"

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	545	570	590
Seat tube lengthmm	406	457	508
Head tube lengthmm	120	125	130
Head tube angle	70°	70°	70°
Seat tube angle	73.5°	73°	72.5°
Chainstay lengthmm	425	425	425
Wheelbasemm	1039	1059	1073
Front centermm	618	638	652
Bottom bracket dropmm	45	45	45
Bottom bracket heightmm	310	310	310
Fork rakemm	44	44	44

Not published by the manufacturer: Reach, Stack, 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: 13.4 kg

29.5 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 22
Largest chainring: 40
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 17.8 in
Highest gear: 100.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire width: 2.1″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

3 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2015
Sample: 365 bicycles with this information
Coverage: 82.5% of the class

Lowest gear

17.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2015
Sample: 410 bicycles with this information
Coverage: 92.7% of the class

Highest gear

100.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2015
Sample: 410 bicycles with this information
Coverage: 92.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 38.3 km/h

Total gear range 562%

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: 17.8–100.0 gear inches
Class reference (p10–p90): 16.8–110.7 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2015
Lowest gear: 410 bicycles with this information, 92.7% of the class
Highest gear: 410 bicycles with this information, 92.7% 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.

Differences across 2015 builds

Differences across 2015 builds
Specification	This bicycle Author Traction ASL	Author Traction	Author Traction 29
Frame
Bicycle weight	13.4 kg	13.4 kg	13.2 kg
Drivetrain
Lowest gear	17.8 in	17.8 in	18.8 in
Highest gear	100.0 in	100.0 in	105.5 in
Other specifications
Wheel size	27.5″	27.5″	29″