Cervelo S1 diet recommendations

Discuss light weight issues concerning road bikes & parts.
maxice
Posts: 86
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

I've got an old Cervelo S1 as a winter training/commuter bike. Most of the components are relatively new as it didnt seem to have done much mileage when I bought it.

Now the thing weighs a ton, whats the best options to WW it?

Spec as follows - think this was a standard build back in 2009ish?

[YouTube]Frame - Cervelo S1 51cm
Forks - 3t funda pro
Headset - Cane Creek
Bars - 3t ergo nova pro
Bartape -3T
Stem - 3t 130mm arx II
Seat post - Cervelo aero 2 position
Crankset - FSA Gossamer Compact 50/34
Front Derailleur - Shimano Ultegra
Rear Derailleur - Shimano Ultegra
Cassette - Shimano Ultegra 12-25 10 spd
Shifters/Brake levers - Shimano Ultegra
Brakes - Standard Cervelo
Saddle - Selle San Marco
Chain - unsure
Wheels - Shimano R500
Tyres - Schwalbe Lugano 25mm
Innertubes - Continental Race 28
Bottle cages - Arundel Dave O x 2

The brakes are rubbish (have upgraded to swisstop blue pads which work well on my CAAD10)
The drivetrain isnt very smooth and the cables rattle

Thinking of junking the whole groupset and replacing with R7000 105 11spd and a lighter aluminium wheelset?

by Weenie


alcatraz
Posts: 2250
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Primary: Wheels, tubes, brakes, bars/stem, crank, skewers

Secondary: compression plug, bolts, seat, tires, bottle cages, pedals

105 is heavier than ultegra. R7000 should be similar weight as ultegra 6700.

maxice
Posts: 86
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

Would have thought todays 105 would be lighter than Ultegra from 10 years ago?

I'm not sure what version of Ultegra it would be?

Going to try to do this on a budget given the C64 overspend!

whyamihere
Posts: 49
Joined: Tue Aug 05, 2008 7:18 pm

by whyamihere

Sram Rival is a lot lighter than 105 for a similar price if you're ok with switching. I'd run different cranks though, the Rival cranks weigh as much as a small planet. Some s/h Exogram Red cranks can be had for relatively small amounts of money and save a huge chunk of weight.

User avatar
Lewn777
Posts: 862
Joined: Thu Mar 09, 2017 5:35 am

by Lewn777

Tries and wheels first.

*Luganos are about 275g so you can easily switch to something in the 250g range and gain speed and increase puncture protection. 50g

*R500 wheels are ewntry level but robust, surely the weight of old ones is up near 1900g. Keep them for winter/trainer work and upgrade to a Camapagnolo set according to your budget maybe Zonda. 400g

* Brakes, maybe switch to Shimano 105 5800, 7000, ULtrega 6800. You might save a little weight, but stopping power is important. Should be excellent with new wheeset.

*Skewers, you can easily save 50g or by switching them to titanium, but go for good quality.

*Cranks. Maybe SRAM Red with a Quark if you don't already have a PM or just s/h 10 speed red or Force. The weights seem variable for FSA Gossamer depending on year (750-950g). Personally I might weigh them and only replace if they're over 800g.

rollinslow
Posts: 124
Joined: Fri Dec 21, 2018 2:25 am

by rollinslow

maxice wrote:
Tue Apr 09, 2019 1:53 pm
I've got an old Cervelo S1 as a winter training/commuter bike. Most of the components are relatively new as it didnt seem to have done much mileage when I bought it.

Now the thing weighs a ton, whats the best options to WW it?

Spec as follows - think this was a standard build back in 2009ish?

[YouTube]Frame - Cervelo S1 51cm
Forks - 3t funda pro
Headset - Cane Creek
Bars - 3t ergo nova pro
Bartape -3T
Stem - 3t 130mm arx II
Seat post - Cervelo aero 2 position
Crankset - FSA Gossamer Compact 50/34
Front Derailleur - Shimano Ultegra
Rear Derailleur - Shimano Ultegra
Cassette - Shimano Ultegra 12-25 10 spd
Shifters/Brake levers - Shimano Ultegra
Brakes - Standard Cervelo
Saddle - Selle San Marco
Chain - unsure
Wheels - Shimano R500
Tyres - Schwalbe Lugano 25mm
Innertubes - Continental Race 28
Bottle cages - Arundel Dave O x 2

The brakes are rubbish (have upgraded to swisstop blue pads which work well on my CAAD10)
The drivetrain isnt very smooth and the cables rattle

Thinking of junking the whole groupset and replacing with R7000 105 11spd and a lighter aluminium wheelset?
Great frame to work with, and a cool history. I have an S1 as well and got the weight down to 15.5lbs with normal components. Slapping Dura-Ace with some C24 wheels will get you there.

User avatar
Stendhal
Posts: 213
Joined: Sun Sep 25, 2016 1:43 am
Location: Silicon Valley

by Stendhal

Make sure the S1 cuts down on its calories, exercises regularly, and avoids alcohol, and the diet will work wonders! :beerchug:

Seriously, this is a fun project and the ideas above will work. Personally I would hope that SRAM mechanical group prices drop with the introduction of AXS to get a deal on Red or Red/Force (the Red cranks are much lighter but the derailleur weight difference to Force does not justify the higher cost IMO)

I am working on a project too and noticed that Fairwheel Bikes on-line sells a house brand [Kalloy Uno], unmarked stem for $35 at very reasonable weights, 129g for your size 130mm.
Specialized S-Works Tarmac SL6 (6.39 kg), Cervelo Aspero (7.87)
Retired: LOW// mki, Pinarello Dogma F10 \ F8, Lapierre Pulsium, TIME Fluidity, Wilier Cento1 SR, Ridley Noah, Cyfac Cadence, Cervelo S2, R3, R5, Felt Z25, Klein Quantum, Cannondale 2.0

maxice
Posts: 86
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

Stendhal wrote:
Wed Apr 10, 2019 4:20 am
Make sure the S1 cuts down on its calories, exercises regularly, and avoids alcohol, and the diet will work wonders! :beerchug:

Started with that, I've lost 3kgs in the last 3 months :thumbup:

Planning on swapping out the tyres for GP4000 II's in 23's. 25's a little tight up front

I also have an Antares 00 that will go on it as well

Will look into Rival 22 as an alternative to 105 if its much lighter

Kumppa
Posts: 288
Joined: Mon Oct 13, 2014 10:05 am

by Kumppa

If you can't find cheap secondhand groupset I wouldn't use lot of money for upgrading it just to drop ~200g. Sounds pretty much waste of money to upgrade ~500-700€ worth of bike with 1000€ just for commuting/winter use...

Just get new cables and service it. Maybe new brakes if theres some problem and new wheels.

maxice
Posts: 86
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

Kumppa wrote:
Wed Apr 10, 2019 1:55 pm
If you can't find cheap secondhand groupset I wouldn't use lot of money for upgrading it just to drop ~200g. Sounds pretty much waste of money to upgrade ~500-700€ worth of bike with 1000€ just for commuting/winter use...

Just get new cables and service it. Maybe new brakes if theres some problem and new wheels.
I have no problem using second hand parts, but definitely want to drop more than 200g

Its been serviced with new cables, chain and pads

Kumppa
Posts: 288
Joined: Mon Oct 13, 2014 10:05 am

by Kumppa

200g+ just from groupset might be possible but it's not cheapest way.

If you want lighter Cervelo just get second hand S2 with 10sp rival/force and it would cost you just 1000€.

tmr5555
Posts: 310
Joined: Tue Jan 28, 2014 12:13 am

by tmr5555

don't have a particular answer but mine says hello:
Image

maxice
Posts: 86
Joined: Wed Aug 15, 2018 11:05 pm

by maxice

tmr5555 wrote:
Wed Apr 10, 2019 5:55 pm
don't have a particular answer but mine says hello:
Image
now that looks good :thumbup: :thumbup:

rollinslow
Posts: 124
Joined: Fri Dec 21, 2018 2:25 am

by rollinslow

maxice wrote:
Wed Apr 10, 2019 7:18 pm
tmr5555 wrote:
Wed Apr 10, 2019 5:55 pm
don't have a particular answer but mine says hello:
Image
now that looks good :thumbup: :thumbup:
That is incredible. The S1 being a pioneering frame in aerodynamic bikes is a long term gem for a collector. Nice work!

rollinslow
Posts: 124
Joined: Fri Dec 21, 2018 2:25 am

by rollinslow

Kumppa wrote:
Wed Apr 10, 2019 4:27 pm
200g+ just from groupset might be possible but it's not cheapest way.

If you want lighter Cervelo just get second hand S2 with 10sp rival/force and it would cost you just 1000€.
The problem is that an S1 has real value for its historical significance where as an S2 does not.

by Weenie


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