Author Guru

Name: Author Guru
Brand: Author

2024 RoadGravel Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 30–46t / 11–34t
Gear range: 474%
Weight: 9.2 kg 20.3 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

48cm 152–162
50cm 160–170
52cm 168–178
54cm 176–185
56cm 183–193

Components

17 of 18 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

AUTHOR carbon Toray T700 / M40 monocoque gravel Not identified

Suspension

1 part

Fork
- Author

Drivetrain

6 parts

Cassette
- Shimano
Chain
- KMC X11 11 speeds
Crankset
- Shimano GRX FC-RX600
FC-RX600
Front derailleur
- Shimano GRX FD-RX810 2 speeds
FD-RX810
Rear derailleur
- Shimano GRX RD-RX810 11 speeds
RD-RX810
Shifters
- Shimano GRX ST-RX600
ST-RX600

Brakes

1 part

Brakes
- Shimano GRX BR-RX400
BR-RX400

Wheels and tires

5 parts

Cockpit and contact points

4 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 52cm

Table

Reach 371mm

Stack 586mm

Wheelbase 1015mm

Head angle 71.5°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	366	365	371	373	384
Stackmm	551	571	586	607	621
Top tube lengthmm	514	534	550	565	580
Seat tube lengthmm	480	500	520	540	560
Head tube lengthmm	120	140	155	180	195
Head tube angle	70.8°	71.2°	71.5°	71.5°	71.5°
Seat tube angle	75°	73.5°	73°	72.5°	72.5°
Chainstay lengthmm	425	425	425	425	425
Wheelbasemm	1005	1007	1015	1026	1041
Front centermm	592	593	601	611	626
Bottom bracket dropmm	77	75	75	72	72
Bottom bracket heightmm	272	274	274	277	277
Fork rakemm	52	52	52	52	52
Trailmm	65	64	62	62	62
Stack/reach ratio	1.51	1.56	1.58	1.63	1.62

Not published by the manufacturer: Standover height, 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: Carbon
Fork material: Carbon
Bicycle weight: 9.2 kg

20.3 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 30
Largest chainring: 46
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 25.6 in
Highest gear: 121.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 38c
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

25.6 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2024
Sample: 1,719 bicycles with this information
Coverage: 76.6% of the class

Highest gear

121.3 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2024
Sample: 1,719 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

772 of 2,241 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2024
Sample: 2,241 bicycles with this information
Coverage: 99.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.8 km/h
Highest gear: 46.4 km/h

Total gear range 474%

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: 25.6–121.3 gear inches
Class reference (p10–p90): 23.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2024
Lowest gear: 1719 bicycles with this information, 76.6% of the class
Highest gear: 1719 bicycles with this information, 76.6% of the class