Jamis Hudson E2

2021 UrbanComfort Electric bicycle Manufacturer page

Last known price: $2,199

Prices shown first for United States
Suspension: Rigid
Wheels: 650b
Drivetrain: 1 × 7 42t / 14–34t
Gear range: 243%
Battery: 309 Wh
Weight: 21.55 kg 47.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

9 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

6061 TIG-welded aluminum, Hudson laid-back design with low ride height, alloy kickstand Not identified

Electric system

2 parts

Battery

Hyena 250w rear hub motor, rear carrier mounted 309wh battery Not identified
Motor

Hyena 250w rear hub motor, rear carrier mounted 309wh battery Not identified

Suspension

1 part

Fork

Hi-tensile unicrown with radiused blades Not identified

Drivetrain

6 parts

Bottom bracket

Sealed cartridge, 68 x 122.5mm w/ single side torque sensor Not identified
Cassette
- Shimano Tourney TZ MF-TZ510-7 7 speeds
MF-TZ510
Chain
- KMC
Crankset

Forged alloy crank, single 42T chainring, 170mm, with full length chainguard Not identified
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano Altus SL-M310
SL-M310

Brakes

1 part

Brakes
- Tektro HD-M275 / HD-M276
HD-M275HD-M276

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Grips

Kraton comfort w/ clamp Not identified
Handlebar

Comfort hi-rise, alloy 25.4 x 80mm rise x 15˚ sweep x 640mm Not identified
Headset

Internal cup, threaded, 1 1/8” Not identified
Pedals

Comfort platform with TPE non-slip insert Not identified
Saddle
- Jamis
Seatpost

Alloy micro-adjust, 31.6 x 300mm, with alloy QR clamp Not identified
Stem
- Jamis

Sizes and geometry

3 sizes Open in the geometry plotter

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

Size SM

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	587	607	627
Seat tube lengthmm	356	457	483
Head tube lengthmm	165	185	180
Head tube angle	68°	68°	68°
Seat tube angle	67°	67°	67°
Chainstay lengthmm	485	485	485
Wheelbasemm	1101	1121	1141
Bottom bracket heightmm	286	286	286
Standover heightmm	466	488	797
Fork rakemm	55	55	55

Not published by the manufacturer: Reach, Stack, Front center, Bottom bracket drop, 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: Steel
Bicycle weight: 21.55 kg

47.5 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 34
Lowest gear: 34.0 in
Highest gear: 82.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Electric system

Battery capacity: 309 Wh

Additional specifications

Battery: Hyena 250w rear hub motor, rear carrier mounted 309wh battery
Tire width: 2.35″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 650b

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.0 km/h
Highest gear: 31.6 km/h

Total gear range 243%

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.