Cervelo C3 with 100mm suspension fork - Gravel for real!

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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andreszucs
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by andreszucs on Thu Aug 31, 2017 4:57 pm

Now that's a setup that justifies the status 'Gravel bike'!

BEFORE: Stock no pedals: 17.85lbs
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AFTER: with pedals 19.03lbs
Fork locked at 70mm (axle to crown reduced), unorthodox seatpost to compensate the geometry since the front was raised a little.
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Fork open at 100mm
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Solid plans to change
-Brakeset to.....something much much lighter (surprise)
-Cassete/RD/Shifting to something also lighter (also surprise)
Last edited by andreszucs on Thu Aug 31, 2017 4:57 pm, edited 2 times in total.
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by Weenie on Thu Aug 31, 2017 4:57 pm

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LeDuke
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Location: Front Range, CO

by LeDuke on Fri Sep 01, 2017 6:49 am

Does the arch contact the frame at full compression?

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glam2deaf
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by glam2deaf on Fri Sep 01, 2017 9:49 am

This rules! Nice work.
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andreszucs
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by andreszucs on Fri Sep 01, 2017 3:40 pm

LeDuke wrote:Does the arch contact the frame at full compression?

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Things are all tight but clear to work just fine. It was unexpected to see the Clement Las 33x700c actually reaching 38mm on those Hed rims.

I also had to replace the blue top cap on the twinshot knob on the fork for somethings smaller to clear the frame.

Image


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andreszucs
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by andreszucs on Fri Sep 01, 2017 4:06 pm

Just sharing some 'good to know' information:

Weight gain:
Cervelo fork 400g to DT Swiss XMM 26" 100 Twin Shot 1577.75: +1177.75
FSA 42cm stock handlebar (284.7g) to Ritchey 46cm flared (313.4): +28.7
Chain guide: ? (forgot to weight, think its about 25g)

Weight Loss:
Crankset: Rotor 3D30 compact (rings,bolts,arms) (680) to Zipp Vumaquad 39T (416): -264
No Front Derailleur (Ultegra Di2 (133.9) + hardware 21.4) : -155.4
Stem: FSA SL-K 100mm (141) to Wren Sport 70mm (71.8 ) : -69.2
Front tire: Continental 700x28c (335.7)+tube (91.7) to Clement LAS 700x33 (294.4) with Stan liquid (40): -93
Rear tire: Continental 700x28c (335.7)+tube (91.7) to Clement LAS 700x33 (309.7) with Stan liquid (40): -77.7
Seatpost: FSA SL-K 27.2 carbon 350mm (220.4) to Generic Enve style carbon post, cut (144.5): -75.9
Saddle: Fizik Antares Vs Manganese Rail (227.3) to Fizik Tundra 2 carbon rail (161.3): -66

TOTAL: 430.25g weight gain
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andreszucs
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by andreszucs on Thu Jan 11, 2018 3:38 pm

This looks quite nice I would say:

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boots2000
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by boots2000 on Thu Jan 11, 2018 6:23 pm

Ha- My hardtail is lighter than that. Begs the question- why?
If I put tires like that on my hardtail it would be under 18 lb.
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by Weenie on Thu Jan 11, 2018 6:23 pm

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andreszucs
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by andreszucs on Thu Jan 11, 2018 7:14 pm

boots2000 wrote:Ha- My hardtail is lighter than that. Begs the question- why?
If I put tires like that on my hardtail it would be under 18 lb.
I’m with you on that. The goal here and my intention to share is to just see what can be done with a stock bike and mess around with components and ideas.

This bike is still on stock wheels and they are quite heavy. Now I’m exploring the retrofit-ability of the MT8 brakes to a drop bar....quite possible.


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