Cervélo R3 6,2kg by Nozes: WW on a budget (final build pg.3)

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Nozes
Posts: 58
Joined: Tue Nov 05, 2013 1:56 am

by Nozes

The lastest spear thrown on the battle against weight:

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J&L PF 4130 ceramic bottom bracket, 27 US$ on ebay,58 grams including shims.

This will allow me to save around 30 grams and getting this build below the 6,3kg mark.
It's another component that I'm not expecting much from. The weight saving comparing to other BB's comes from diminutive bearings,that should't last very long. Not really a problem for me: I'm not heavy (68kg),powerful or ride this bike enough to wear it in a short period of time.

Last week I finally returned to riding after 3 months off,and could take the first impressions on the new ZTTO cassete. Coming from a Ultegra,I've found it much more noisy and not as smooth,just as I expected. Not really problems in my book. It works,it's light,it's cheap.

But not all is fun and games,it never is. My SRAM Red (10 speed) front derailleur refuses to work properly with my set up. When I put it on I didn't really found any problem,but after trying to adjust it before the first ride it wouldn't work no matter what I did to it. Looking closer,it is not a compact front derailleur,so my 48-34 chainrings will not work with it. I'm now back with the 105 5800 (87gr with ti bolts) while I wait for a SRAM Rival Yaw,about 10 grams lighter than the 105 and with supposedly less chain rub.

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Nozes
Posts: 58
Joined: Tue Nov 05, 2013 1:56 am

by Nozes

My project is finished.
Well,unless something really interesting comes along :)

The J&L bottom bracket doesn't fit my frame,can't really understand how I made that mistake,but it helped to lose some of the "momentum" I had on trying to get this build as light as I could on a tight budget,without losing reliability.

So,the final (for now) build list is this:

Frame Cervélo R3 2014 51cm (+BB) 1065
Fork 3T for Cervélo 377
hanger Cervélo
Headset FSA 45
seatpost clamp Cervélo 15
Seatpost Generic carbon 27,2x320mm 127
Seat GUB 1158 150
Stem UNO 7 100mm + ti bolts 98
Bar KCNC SC Force 440mm 218
Bartape Deda Traforato 40
Bottle cage Lifeline titanium 22
Outer Cables generic alu links/Braking 60
Inner Cables Steel 50*
Brakes Planet X CNC 215
Front derailleur SRAM RED Yaw 69
Rear derailleur SRAM Rival 22 wifli (ti cable bolt + J&L pulleys) 179gr
Crankset Rotor 3D30 172,5mm 642
Bottom Bracket SRAM PF30
Chainrings Rotor NoQ 34 (29gr) + TA Syrius 48 (74gr)
Chainring bolts Rotor
Chain PYC 1101 215
Shifters SRAM Rival 22 325
Cassette ZTTO SLR 11-32 218
Wheels: Novatec Sprint clincher TLR (+tape and valves) 1420
hubs Novatec
Spokes Novatec
Rims Novatec
Inntertubes Joe's No flat's sealant 50
Tires Schwalbe Pro One tubeless 23mm 488
Pedals Xpedo Thrust 7 238
Skewers J&L titanium 31

Latest changes were a new front derailleur,I got a nice deal on a used Red Yaw that works great with my 48-34 setup,and a different seatpost,also a generic from Aliexpress,cut to 320mm.

The lowest I measured was 6270gr,now with another bottle cage is right on the 6300gr mark. I'm happy with it,rides great,and I'm finally healthy enough to enjoy it.

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Here's a picture from last Thursday on one of the most beautiful climbs in Portugal,Lousã to Trevim (27km,1100m^)

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Strava activity: https://www.strava.com/activities/2622444067

As always,feel free to ask or give your opinion.

Happy rides!

by Weenie


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