Dartmoor Blackbird Junior

Name: Dartmoor Blackbird Junior
Brand: Dartmoor

2021 YouthMountain youth Manufacturer page

Travel: 130 / 130 mm Fork / rear shock
Wheels: 26″
Drivetrain: 1 × 9 28t / 11–42t
Gear range: 382%
Weight: 13.95 kg 30.8 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

20 of 23 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

Drivetrain

8 parts

Bottom bracket

73mm English/BSA threaded Not identified
Cassette
- microSHIFT Advent
Chain
- SunRace
Chain guide

None
Crankset
- Samox
Front derailleur

None
Rear derailleur
- microSHIFT Advent
Shifters
- microSHIFT ADVENT Trail Trigger Pro Shifter 1×9 9 speeds

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

7 parts

Grips
- Dartmoor
Handlebar
- Dartmoor
Headset
- Dartmoor
Pedals
- Dartmoor
Saddle
- Dartmoor
Seatpost

6061 aluminum, 300mm length Not identified
Stem
- Dartmoor

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

Reach 365mm

Stack 558mm

Wheelbase 1075mm

Head angle 66.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	365
Stackmm	558
Top tube lengthmm	502
Seat tube lengthmm	360
Head tube lengthmm	100
Head tube angle	66°
Seat tube angle	73°
Chainstay lengthmm	425
Wheelbasemm	1075
Front centermm	650
Bottom bracket dropmm	14
Standover heightmm	750
Fork rakemm	39
Stack/reach ratio	1.53

Not published by the manufacturer: Bottom bracket height, Trail, 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: 13.95 kg

30.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 130 mm
Rear travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 17.3 in
Highest gear: 66.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.3″
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

2 measures

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

Lowest gear

17.3 gear inches

This value is within 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

66.2 gear inches

This value is within 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: 6.6 km/h
Highest gear: 25.3 km/h

Total gear range 382%

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: 17.3–66.2 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

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 2021 builds
Specification	This bicycle Dartmoor Blackbird Junior	Dartmoor Blackbird EVO 27.5	Dartmoor Blackbird EVO 29	Dartmoor Blackbird Intro 27.5	Dartmoor Blackbird Intro 29
Frame
Bicycle weight	13.95 kg	15.65 kg	15.95 kg	Not informed	15.65 kg
Suspension
Front travel	130 mm	160 mm	160 mm	160 mm	160 mm
Drivetrain
Smallest chainring	28	34	32	32	30
Largest chainring	28	34	32	32	30
Rear sprockets	9	11	11	9	9
Largest sprocket	42	51	51	46	46
Lowest gear	17.3 in	18.3 in	18.2 in	19.1 in	18.9 in
Highest gear	66.2 in	85.0 in	84.4 in	80.0 in	79.1 in
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	Not informed	Not informed
Tire width	2.3″	2.5″	2.5″	2.3″	2.3″
Rear travel	130 mm	160 mm	160 mm	160 mm	160 mm
Wheel size	26″	27.5″	29″	27.5″	29″