Undulating Rim Depth URD

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Super Aero Undulating Rim Depth 700C Disc Brake 28mm Width Carbon Clincher Rim

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Super Aero Undulating Rim Depth 700C Disc Brake 28mm Width Carbon Clincher Rim

- Undulating rim depth (30-65mm), several height.

- 28mm Width carbon clincher rims (tubeless ready).

- Disc brake, 21H or 24H optional.

- Wide U shape design, better aerodynamics and stiffness.

- 2 years quality warranty.

  • item no.:

    URD28
  • product orgin:

    China
  • payment:

    Paypal, Bank transfer
  • color:

    UD/3K(customized painting acceptable)
contact us
  • specification
  • customized painting

Super Aero Undulating Rim Depth 700C Disc Brake 28mm Width Carbon Clincher Rim


Features:

- 28mm width symmetric design road carbon rim for disc brake (no brake surface).

- Reinforced nipple bed, can tolerate larger spoke tension for wheel building.

- New bead lock system, better tire holding, prevent air leaking.

- Wide U shape design, of better aerodynamics and stiffness.

- Super Light model: URD28-305-SL, URD28-450-SL, URD28-556-SL, URD28-605-SL (Max weight limit 100kg/220lb)

- Standard weight model: URD28-305, URD28-450, URD28-556, URD28-605 (Max weight limit 120kg/265lb

28mm width URD road carbon rims


Specification:

- There is wide variety of road bike carbon rims on the market, to supply something unique, LightCarbon introduces our URD (undulating rim depth) series.  

  The rim height is slightly up and down like wave on the sea. There are multiple depth options (30-35, 45-50, 55-60, 60-65mm).

- URD rims are now available only in disc brake version,  21 and 24 spoke holes, designed for road riding.

  In the deeper areas of each spoke hole, the rim is reinforced with special materials to enhance the rim's strength and rigidity.  

- Rims profile fluctuates up and down by 5 mm, allowing cyclists to achieve better aero performance and crosswind stability. 

  You can ride more steadily and safely in the wind.

- URD rims come with hook bead design that is tubeless compatible. 

  It can perform well at lower tire pressure, reduce rolling resistance and improve speed.

 

Model URD28-305-SL URD28-305 URD28-450-SL URD28-450 URD28-556-SL URD28-556 URD28-605-SL URD28-605
Depth 30-35mm 30-35mm 45-50mm 45-50mm 55-60mm 55-60mm 60-65mm 60-65mm
Outer Width 28mm 28mm 28mm 28mm 28mm 28mm 28mm 28mm
Inner Width 21mm 21mm 21mm 21mm 21mm 21mm 21mm 21mm
Weight(±15g) 360g 400g 430g 460g 510g 530g 500g 550g
Material T800 T700 T800 T700 T800 T700 T800 T700
Spoke Hole Options 21H 21H 21H or 24H 21H or 24H 24H 24H 21H 21H
Sectional Drawing 28mm URD carbon rim geometry
* ERD 570mm 570mm 540mm 540mm 520mm 520mm 510mm 510mm
Rim Offset 0mm 0mm 0mm 0mm 0mm 0mm 0mm 0mm
Rim Bead Hook Hook Hook Hook Hook Hook Hook Hook
Max Weight Limit 100kg/220lb 120kg/265lb 100kg/220lb 120kg/265lb 100kg/220lb 120kg/265lb 100kg/220lb 120kg/265lb
Tire Type Tubeless Tubeless Tubeless Tubeless Tubeless Tubeless Tubeless Tubeless
Brake Type Disc Brake Disc Brake Disc Brake Disc Brake Disc Brake Disc Brake Disc Brake Disc Brake
Max Spoke Tension 130kgf 130kgf 130kgf 130kgf 130kgf 130kgf 130kgf 130kgf
Max Tire Pressure 125psi/8.6bar 125psi/8.6bar 125psi/8.6bar 125psi/8.6bar 125psi/8.6bar 125psi/8.6bar 125psi/8.6bar 125psi/8.6bar
Tire Size(Recommended) 700*28C-45C 700*28C-45C 700*28C-45C 700*28C-45C 700*28C-45C 700*28C-45C 700*28C-45C 700*28C-45C


Carbon spoke wheels 21H (2:1 drilling) built with undulating rim becomes more and more popular, please click below link for more details:

Undulating Wheels Built With Carbon Spokes


* ERD Calculate
ERD is short for effective rim diameter, it is the maximum distance that spokes bridge going from one end of the rim to another.
How do we calculate the ERD of our rims? Below are calculation equation and sketch for your reference:

URD rims ERD calculate



ERD=Rim outer diameter-(rim depth)*2+(Rim nipple bed thickness)*2

For example

ERD of URD28-305 rim=633mm-35mm*2+3.5mm*2=570mm
Most people prefer ERD including the length of the nipple head. 
However, customers may use different nipples and components for building. 
Please add the length of the nipple head (2.5mm~3mm generally) for your spoke calculation. 
If the length of the nipple head is 3mm, then ERD of your URD28-305 rim is 570mm+3mm*2=576mm

A: Rim nipple bed thickness (=3.5mm)
B: Length of nipple head (2.5mm~3mm generally)


Video


LOGO/Decal of “ProX” can be provided free of charge, please see the picture below for details. 

Decals can be placed on the rim according to your preference , matte and glossy optional. 

Of course you can also choose simple rims without decals (UD black matte or UD black gloss). 

You are not forced to make this LOGO on your rims. 

URD rims LOGO 1

URD rims LOGO 2

URD rims LOGO 3

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We will reply you within 24h after received your inquiry

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