PI ROPE wheelset 29" Light 6-hole Lucky Jack Ultra SLS4 28 | Golden Shine
A cross country wheelset with textile spokes and a weight of less than 950g, can that work? So far, there have been many approaches from well-known manufacturers, but all of them have produced unsatisfactory results. The young and extremely innovative think tank PI ROPE from Chemnitz, Saxony, has made the impossible possible in cooperation with the Technical University of Chemnitz. The result is a textile spoke made of braided Vectran synthetic fibers.
The material is extremely robust, resistant to aging and weathering, and has better mechanical properties than its steel counterpart. The tensile strength and damping is many times higher, but the weight of the fibers is five times lower. These are optimal prerequisites for a very light, but nevertheless hard-wearing wheel, as the rotating masses are minimized in the important outer areas and the flexibility of the Vectran textile spokes prevents permanent plastic deformation at high peak loads.
In cooperation with the well-known German component manufacturer NONPLUS COMPONENTS, hubs were specially developed that can accommodate the special ends of the PI ROPE spokes.
Extra large bearings support the black anodized hub body on a 17 mm axle . On the rear wheel, two more carry the freewheel body. Microgap end caps seal everything and keep dirt or water out of the inside of the hub. In addition, a unique ventilation system prevents the creation of negative pressure due to temperature fluctuations in the hub. As a result, no moisture is sucked into the ball bearings, which ensures a significantly longer service life and noticeably smooth running of the bearings.
The freewheel mechanism is technically exceptional. The conical gearing has a contact surface that is approx. 400% larger than conventional ones
Spur gear teeth and thus enables maximum power transmission with minimum wear. The very elaborately manufactured tooth back, together with the hard anodized surface, ensures low abrasion and thus also increases durability. The 45-fold toothing results in a maximum idle travel of 8°. This means that you always have optimal propulsion in every driving situation.
Duke has managed to improve the Lucky Jack compared to the SLS3 version. In doing so, they have once again pushed the apparently technically possible limits. A 28mm wide rim weighing just 267g is a direct challenge to the competition.
How did the French do this? They took a closer look at the individual elements of the rim and looked for optimization options. In particular, a new resin was used. This not only made it possible to slim down, but also to increase impact resistance at the same time. Similar to the SLS3 production process, post-processing or painting is not necessary here either.
In the Ultra version, material was also saved in non-critical areas in order to save further weight without sacrificing functionality.
The makers of PI ROPE have confidence in their products and grant a 3-year guarantee on all material and manufacturing defects as well as a 2-year crash replacement.
intended use : cross country
Wheel size: 29" (ETRTO: 622 x 28 mm)
Rim Type: Clincher (clincher and folding)
Brake type: only for disc brake
Brake disc mount: 6-hole
Material hub: aluminum, steel
Material rim: carbon
Material spoke: Vectran synthetic fiber
Internal width: 28mm
External width: 33mm
Rim Height: 19mm
Number of holes: 28 holes (per rim)
Spokes: 56x Pi ROPE Vectran PI Protect textile spokes / straight pull
Lacing pattern: 3-crossed
axle type front: 15x110 mm BOOST
Rear axle type : 12x148 mm BOOST
Front bearing : 2x industrial deep groove ball bearings
bearing : 4x industrial deep groove ball bearings
Freewheel compatibility: 11-, 12-speed SRAM XD or 12-speed Shimano Micro Spline
Freewheel type: conical gearing, 45-spline | max. 8° idle travel
recommended tire width: 1.9" - 2.6" (50-66 mm)
max. air pressure: max. 2.5 bar (at 2.1" tire width)
tubeless capable: yes
Maximum system weight: 95 kg (rider, bike, clothing and possibly luggage)
Valve hole: Presta valve (SV)
Color rims: UD satin black, black decals
Color spokes: gold (natural)
Color hubs: black
Weight according to the manufacturer: 940g
Weight weighed: 955g (wheelset), 438g (front wheel), 517g (rear wheel)
Scope of delivery:
1x front wheel
1x rear wheel
1x spare spoke
1x tube of care oil for textile spokes