- Manufacturer
Fulcrum Racing 5 Wheels black Shimano
Racing 5 are designed for everyday use and training. An optimum proposal from Fulcrum which guarantees excellent quality.
The hubs are completely new: oversized and provided with flanges for blade hammer-head spokes. Smoothness is ensured by sealed high-quality bearings and they have a new single-piece body which incorporates the freewheel body and pawl carrier in a single component with a considerable reduction of weight.
The spokes have blade hammer-heads of the Aero type and differentiated thickness, 24 in the front wheel and 27 in the rear wheel.There is radial spoking for the front wheel and the patented Fulcrum 2:1 Two-to-One™ Spoke Ratio for the rear wheel. Also unchanged is the presence of Dynamic Balance™ which, thanks to two oversized spokes, balances the concentration of the rim joint material during wheel rotation.
The rim is a medium-sectioned one with a height of 24 mm with reinforcing eyelets for the spokes and turned braking surfaces.
The new Racing 5 wheels have a deeper upper bridge of the rim to facilitate clincher tire fitting.
Racing 5 wheels are compatible with Shimano and Sram 8/9/10-Speed drivetrains.
Weight (without quick release):
* front: 775 gr
* rear: 985 gr
Manufacturer: Fulcrum
Weight: about 1.76 Kg ( front 775g, rear 985g)
Number of spokes: VR 20, HR 24
Dimension: front 100mm, rear 130 mm
Type of tires: Clincher tyre
Tyredimension: 19 up to 25-622
Field of application: Training, beginner
Colour: black
Delivery contents: Front Wheel, Rear Wheel, Quick release
2:1 Two-to-One™
When you push on the pedals, the rotational force on the sprocket induces a slackening of the freewheel spokes with a consequent loss of rim tension. This results in undesirable flex of the whole wheel and an unavoidable loss of energy.Fulcrum® has solved this classic cycling problem with its 2:1 Two-to-One™ Spoke Ratio patent, by doubling the spokes in the critical zones.
As a result there are two spokes which carry out the function of one, slackening and torsion are limited and the transfer of the athlete's power is much more effective Also, thanks to this system, spoke tensions are balanced more evenly between drive and non-drive sides and the fatigue life of the rim, hub and spokes is lengthened
Dynamic Balance™
The concept is simple and elegant: balance the weight of the gasket, with an item of similar weight placed on the exact opposite side.
For top models, this is obtained by a special operation on the section of the rim opposite the rim joint.
For entry-level models, Dynamic Balance™ is obtained by using two oversized spokes in the section opposite the joint. The result is a wheel with perfectly balanced rotational dynamics.
No reviews until now
 |
