CeramicSpeed has launched a brand new outsized pulley wheel (OSPW) RS derailleur pulley system at this time. The Danish model says the OSPW has been ‘lifted into the long run’ receiving progressive new tech options in addition to a ‘distinctly trendy and angular design’. It will likely be appropriate with Shimano and Sram street groupsets. It does additionally share some tech options with the OSPW X for the Sram Transmission MTB unit that was launched final Autumn.
The unique OSPW (outsized pulley wheel system was launched again in 2015 and the model unveiled its aero OSPW in June final yr. OSPW techniques have turn into a well-liked, if costly method to enhance drivetrain effectivity because of the bigger derailleur pulley wheels themselves and ceramic bearings.
CeramicSpeed says the up to date design of the OSPW RS permits it to mix seamlessly into the modern design traits of recent bikes and groupsets. The model claims there are additionally now extra customisation choices accessible corresponding to a number of brand and color choices in addition to two various kinds of decrease pulley which we unpack within the tech information under.
ADR and Alpha Disc options
Visually a key change to the OSPW RS is the strong decrease pulley wheel or Alpha Disc because the model has named it. This characteristic was first launched on the OSPW X for Sram MTB drivetrains. CeramicSpeed says the cage of the derailleur has additionally been bolstered to offer extra energy and sturdiness and the OSPW might be accessible with small or massive crew version logos and both 5 spoke pulley wheels in 5 color choices or the strong Alpha Disc wheel.
The Alpha Disc contains a two-piece development. A separate slender huge tooth profile is created from a composite materials which the model says prolongs put on safety and reduces noise. The second piece is the strong aluminium disc that’s mentioned to eradicate the chance of objects or particles being caught between the spokes of the pulley wheel whereas including energy and stiffness.
CeramicSpeed has additionally developed what they name the ADR or Energetic Particles Remover characteristic. The model says it is a patent pending characteristic that makes it just about not possible for particles to enter the OSPW RS bearings. The ADR itself is a brand new mud cowl which is anchored in a groove across the pulley wheel, enclosing the bearing itself. A ‘bladed groove construction’ surrounds the mud cowl which the model claims dynamically extracts particles from the pulley wheel while it is rotating.
CeramicSpeed says this characteristic has been developed with R&D departments and pro-off-road groups. It seems the Workforce Tormans cyclocross crew have been instrumental in creating the ADR and strong pulley wheel options.
Kobe Siemons, former head mechanic of the Tormans CX crew (now with Soudal QuickStep) mentioned:
“To optimize the present model of the OSPW, we began to consider options to let it carry out even higher in heavy mud. We gave suggestions to the CeramicSpeed R&D Division – and requested them to work on a full disc design to keep away from mud sticking to the pulley wheels and to carry out higher in heavier situations.”
It appears efficiency in muddier, harder situations was an element within the new unit’s improvement and the Alpha Disc sounds prefer it may very well be an possibility for gravel riders or cyclocross racers.
Siemons mentioned “We used the primary model of the total pulleys for one season, then we received an up to date pulley wheel with an even bigger bearing and caps with the “ADR operate” to keep away from grass and dirt turning within the bearing and dirt sticking to the pulley wheel. Until now we’re nonetheless utilizing these identical prototype pulleys within the heaviest circumstances and “grass races”, as a result of it makes an enormous distinction for our riders to trip their bikes with out a hopping gear or bad-turning drivetrain”.
We’ll add pricing information on the OSPW RS once we obtain it.
Picture 1 of 4
