SON 28 + Open Pro UST + Sapim Race 28" Wheel

The heart of a robust front wheel: the Son 28 hub dynamo in the wheel with a Mavic A Open Pro UST rim

The Son 28 is a hub dynamo universally approved for all wheel sizes from 16" to 29" . It reaches its rated power in a 28" wheel at about 16 km/h. It is therefore recommended if a particularly bright light is required when driving slowly or if other devices are to be operated or if batteries are expected to be charged. Compared to its predecessor, the energy loss during idling has been reduced by approx. 15% and the weight was decreased by 140 g.
Combined with the Mavic Open Pro UST rim and butted Sapim Race spokes, the Son 28 is a robust front wheel for the road, which can also be ridden tubeless.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of used batteries and electrical equipment can be found here.

Specifications:

Application:

Road, Gravel

Wheel Size:

28"

Tyre Type:

clincher tyre

Number of Spokes:

32

Brake Type:

rim brake

Tubeless System:

Road UST

Technical Information - Rim:

Type:

Mavic Open Pro UST

Rim Flange:

with hook

Dimensions (ETRTO):

19-622

Inner Width:

19 mm

Outer Width:

22 mm

Depth:

25 mm

ERD:

589 mm (rim base)

Valve Hole Diameter:

SV / Presta (6.5 mm)

Rim Material:

aluminium (Maxtal)

Technical Information - Front Dynamo Hub:

Type:

SON Son 28

Over Locknut Dimension:

9 x 100 mm quick release

Output:

6V/3W (according to StVZO)

Efficiency:

65 % at 15 km/h in a 28" wheel

Power Consumption at Idle Speed:

0.5 W at 15 km/h in a 28" wheel

Body Material:

aluminium (6082-T6)

Bearings:

deep groove ball bearing 629-2RSH (SKF)

Seals:

labyrinth seal, gaskets and pressure compensation system

Wire Connector:

4.8 mm flat plug, 2-pole, insulated return

Street Use in Germany:

yes

Check Number:

K~~834

Technical Information - Lacing:

Front Lacing Pattern:

3-cross

Spoke Type:

Sapim Race / double butted (2.0-1.8-2.0)

Spoke Material:

stainless steel

Nipple Material:

brass

Approved For:

Recommended Tyre Width:

28 to 47 mm

Features:

• the wheel is handmade
• neodymium iron boron magnetic rotor, 26-poles
• hollow axle (10 mm) made of work-hardened, stainless steel
• welded rim, single eyeleted
• conventional rim drilling
• Tubeless Ready (only with Mavic UST valve - must be purchased separately)
• use with Mavic UST rim tape

Colour Index:

Note:

Generally, the first component of the colour designation is allocated to the hub, and the second to the rim.

black-black:

• Rim: black
• Spokes: black
• Hub: black
• Nipples: black

Manufacturer Number:

black-black:

303212MC2

Contents:

• 1 x SON front wheel Son 28 + Mavic Open Pro UST + Sapim Race
• 1 x bolt-on axle (hex socket)
• 1 x mounting material set