Trailcraft Blue Sky 20 Special

Name: Trailcraft Blue Sky 20 Special
Brand: Trailcraft

2021 YouthMountain youth Manufacturer page

Last known price: $1,599

Prices shown first for United States
Fork travel: 80 mm
Wheels: 20″
Drivetrain: 1 × 10 28t / 11–36t
Gear range: 327%
Weight: 9.16 kg 20.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

One Size

The manufacturer did not publish rider heights for these sizes.

Components

6 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

Aluminum Not identified

Suspension

2 parts

Fork

Trailcraft TC30, carbon lowers Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket

Trailcraft, square taper Not identified
Cassette
- SunRace
Chain guide

None
Crankset

Trailcraft, 127mm length Not identified
Front derailleur

None
Rear derailleur
- Shimano ZEE RD-M640
RD-M640
Shifters
- Shimano ZEE SL-M640
SL-M640

Brakes

2 parts

Brake levers
- Tektro
Brakes
- Tektro

Wheels and tires

5 parts

Front hub

Trailcraft alloy, HG driver Not identified
Rear hub

Trailcraft alloy, HG driver Not identified
Rims

Trailcraft Not identified
Spokes

Trailcraft wheelset Not identified
Tires
- Vee Tire

Cockpit and contact points

7 parts

Grips

Trailcraft, lock-on Not identified
Handlebar

Trailcraft Alloy Not identified
Headset

Trailcraft Precision, sealed cartridge bearings Not identified
Pedals

None
Saddle

Trailcraft Not identified
Seatpost

Trailcraft Not identified
Stem

Trailcraft, 40mm length Not identified

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size One Size

Table

Geometry diagram unavailable

The drawing needs reach, stack, head tube length and bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	445
Seat tube lengthmm	270
Head tube angle	68°
Seat tube angle	73°
Chainstay lengthmm	340
Wheelbasemm	864
Standover heightmm	508

Not published by the manufacturer: Reach, Stack, Head tube length, Front center, Bottom bracket drop, Bottom bracket height, Fork rake, 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
Fork material: Carbon
Bicycle weight: 9.16 kg

20.2 lb

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 15.6 in
Highest gear: 50.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 20″

Technical analysis

2 measures

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

Lowest gear

15.6 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Highest gear

50.9 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.0 km/h
Highest gear: 19.5 km/h

Total gear range 327%

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: 15.6–50.9 gear inches
Class reference (p10–p90): 15.6–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2021
Lowest gear: 230 bicycles with this information, 72.3% of the class
Highest gear: 230 bicycles with this information, 72.3% of the class