A better take a look at the Dice highway & time trial bikes of Biniam Girmaye on the Giro d’Italia reveals a brand new prototype CeramicSpeed Aero OSPW improve searching for out these marginal positive factors. Already claimed to save lots of watts with bigger outsized pulley wheels and low-friction ceramic bearings, CeramicSpeed appears to be like to be searching improved aerodynamics, as nicely…
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 in for a detailed second within the Stage 1 dash simply behind Mathieu van der Poel, the 22-year-old Eritrean professional highway rider has gotten a reasonably stable begin to his first Grand Tour. With 3 phases down, his ridden in 3 completely 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 proscribed as CeramicSpeed didn’t even trace at it once 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, doubtless across the Tour de France.
The skin of the driveside appears to be like shiny & clean with painted white strains coming off its vanguard. However a little bit of a look at its bottom reveals the 2 common bolts by the pulley axles, plus two extra that maintain the clamshell collectively.
Observe: Bikerumor composite X-ray overlay comparability
Since we don’t have official specs, I took the highly-scientific strategy 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 doubtless sticks with the very same 13-tooth higher & 19-tooth decrease pulley wheels spinning on CeramicSpeed’s personal ceramic bearings, the identical total cage size, and decreased spring pressure.
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 cross within the smallest ring/cog combo. The rear is open the place we are able to see the chain poking out.
Not the entire Intermarché-Wanty-Gobert workforce bikes had the prototype CeramicSpeed Aero OSPW put in, however this picture from their workforce mechanic on Instagram confirmed that Girmaye had one on his Stage 2 time trial Dice Aerium TT bike, as nicely. Search for a extra detailed take a look at his Dice bikes later this week…
We’ll preserve our eyes open for extra particulars on an official launch schedule, and the way a lot this may value you. Belief us, it’s gonna be costly – the usual non-aero model is already 500-590€ on high of the 800€ derailleur!
