All my bikes are equiped with Ultegra Di2 but this time I wanted to try out something new. It should still be electronic shifting. So this was basically a Campy vs Sram debate. I discarded my Campagnolo idea (entirely by it's quite high price point for EPS disc brake groupsets). So long story short Sram Red Etap HRD it was!
The wheelset was donated from my Argon18 gravel bike which goes back into winter modus at the moment. It is a Prime RP-38 disc wheelset which is reasonably light and is tubeless ready as well.
The powermeter I took of my Wilier GTR. This is an Rotor 3d24 with a Power2max NG Eco spider on it which has served me very well the last couple of months. Unfortunately I ordered these with 4-bolt hole patterns to accept Shimano asymmetrical chainrings so I couldn't go all Sram (Red chainrings) with this build. I decided that a fresh pair of Dura Ace 9000 chainrings would match the silver of the etap rear mech. I'll leave the judgement to you guys but I do think this matches quite nicely .
Enough talking, let the pictures talk
and ... the final weight is :
Some remarks of this build:
- I had to put a homemade centerlock disc spacer to move the disc brake rotor a bit outboard. The Sram Etap HRD rotors hitted the spokes and it is still realy a tight fit as you can see here. I've ordered a 160mm rotor to move the caliper a bit upwards (should give more clearance plus give extra stopping power).
- The pressfit process of the bottom bracket realy took the crap out of me. It was actually the first time I pressed a BB in a carbon sleeve (previous ones were metal sleeves). I used assembly paste (which doesn't make the process any easier I think). The 24mm spindle of the Rotor crank is also on the wider side (I think a tiny bit wider than the Shimano Hollowtech ones). It required gentle tapping with a platic hammer to get it in place. But all in all the cranks are spinning really smooth. Happy days!!
- On of the rivnuts of my bottle cage mount were not properly fixed in the frame. I managed to get the bottle cage screw loosened and installed a bottle cage on it and I think this was just enough to let the rivnut expand against the inside of the frame.
- The RAT-axles may seem a bit daunting at first sight but once you're getting the hang of the mechanism I personally think they're even better than standard thru-axles.
Last but not least here is my speclist:
- Frameset : Cervelo R3 disc in size 54
- Groupset : Sram Red Etap HRD
- Cassette: Sram PG-1130
- Chain: Sram PC-1170
- Crankset : Rotor 3d24 with Power2max NG eco spider and Dura Ace 9000 (53-39) rings
- Wheels: Prime RP-38 disc with Schwalbe Pro One tubeless 28mm
- Saddle: Pro Stealth 142mm
- Bottlecages: Tune Wasserträger
- Bottombracket : C-bear BBright for hollowtechII
- Stem: Fizik Cyrano R1 stem (120mm)
- Handlebars: Fizik Cyrano R3 snake handlebar (40cm)
- Pedals: Speedplay Zero CroMoly
- Disc rotors: Shimano SM-RT99 (140mm, will install a 160 in front)
Weight comes in at 7.68kg (pretty happy with this result, could go down with a nice set of tubulars, better cassette, lighter pedals)