A more in-depth take a look at the Dice street & time trial bikes of Biniam Girmaye on the Giro d’Italia reveals a brand new prototype CeramicSpeed Aero OSPW improve looking for out these marginal good points. Already claimed to avoid wasting watts with bigger outsized pulley wheels and low-friction ceramic bearings, CeramicSpeed seems to be searching improved aerodynamics, as effectively…
CeramicSpeed Aero OSPW prototype derailleur pulley cage
We noticed the CeramicSpeed Aero OSPW prototype derailleur cage improve on the Giro race bikes of Biniam Girmaye – like his Dice Litening C:68X SLT right here.
Having are available for an in depth second within the Stage 1 dash simply behind Mathieu van der Poel, the 22-year-old Eritrean professional street rider has gotten a reasonably stable begin to his first Grand Tour. With 3 levels down, his ridden in 3 totally different kits, after swapping from his common Intermarché-Wanty-Gobert yellow & blue to the white Maglia Bianca as he held the 2nd spot for a younger rider after day one, then the mauve Maglia Ciclamino as he held onto 2nd within the sprinter’s factors classification after the TT.
And an additional free Watt or two by no means hurts.
Tech particulars – What do we all know?
What we learn about this CeramicSpeed prototype Aero OSPW improve is restricted as CeramicSpeed didn’t even trace at it after we met with them at Sea Otter to speak about new OSPW finishes. Rumor has it although, that the Aero OSPW cage ought to make an official debut this summer time, possible across the Tour de France.
The skin of the driveside seems shiny & clean with painted white strains coming off its vanguard. However a little bit of a look at its bottom exhibits the 2 common bolts via the pulley axles, plus two extra that maintain the clamshell collectively.
Word: Bikerumor composite X-ray overlay comparability
Since we don’t have official specs, I took the highly-scientific method of photoshopping the brand new cage profile over a typical CeramicSpeed OSPW put in on one other Shimano Dura-Ace R9250 rear derailleur to get an concept of what’s lurking inside.
Lining up the 2 suggests this possible sticks with the very same 13-tooth higher & 19-tooth decrease pulley wheels spinning on CeramicSpeed’s personal ceramic bearings, the identical general cage size, and diminished spring stress.
c. Intermarche-Wanty-Gobert, picture by Mikey VK
The entrance fringe of the shiny carbon(?) cage involves a closed level, with a slit minimize out of the entrance solely on the decrease edge wanted for the chain to go within the smallest ring/cog combo. The rear is open the place we will see the chain poking out.
Not the entire Intermarché-Wanty-Gobert group bikes had the prototype CeramicSpeed Aero OSPW put in, however this picture from their group mechanic on Instagram confirmed that Girmaye had one on his Stage 2 time trial Dice Aerium TT bike, as effectively. Search for a extra detailed take a look at his Dice bikes later this week…
We’ll maintain our eyes open for extra particulars on an official launch schedule, and the way a lot this may price you. Belief us, it’s gonna be costly – the usual non-aero model is already 500-590€ on prime of the 800€ derailleur!
