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PostPosted: Sat Jan 24, 2015 5:37 pm 
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Joined: Sat Jan 24, 2015 5:15 pm
Posts: 1
Here is the deal, my Crux is a heavy beast. I have a 2015 specialized crux expert carbon size 52.
specs are as follows
Van dessel stock disc wheels non tubeless Reynolds skewers Stainless (I have Stans Grail wheels on order)
heavy Specialized trigger sport tires with road tubes 700x38 (I have conti speed tires on order)
CX-1 force mechanical levers,
CX-1 Force carbon crankset (42t ring) BB30
CX-1 Force rear derailleur
CX-1 11-32 cassette
TRP spyre Carbon mechanical disc calipers
TRP 140mm rotors
Specialized carbon set back seatpost
Specialized Carbon rail chicane saddle 155mm
Specialized comp 100mm stem (carbon spacers) (I have a uno on order)
FSA energy aluminum bars 42cm
shimano xtr pedals
specialized carbon rib cage bottles cages x2
garmin mount
weight is 18.3lbs (yikes)


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Posted: Sat Jan 24, 2015 5:37 pm 


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PostPosted: Sat Jan 24, 2015 6:09 pm 
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Joined: Tue Aug 12, 2014 3:50 pm
Posts: 178
Location: FIN
1. Seatpost, stem & bar to exchange.
2. Saddle : Chicane is not the lightest choice. Reliable saddle can be found around 160g.

3. Are you absolutely sure about CX1 and gravel races ? It won't work. Look at f.e. Rebecca Rusch bike : 50-34 and 11-28… for good reason.

4. Tubeless can work, can not ( case of luck or lack of it ) , most people use tubes.


All depends on your budget … "on fast" I would do it that way :

1. Wheels : DT RC 38C DB
2. Tires : Challenge open tubular
3. Seatpost, stem, bar : Fizik R0/ R1 "Cyrano"
4. Crank : Rotor 110BCD - 34-48 rings / stronglight ct2 or Miche Super 11 plus Red RD +FD ( plus lever for front )
5. Saddle : comfortable, carbon rails and shell ( Fizik, Selle Italia… )
6. bar tape : Lizard "fat" 2.5mm

all should shave at least 1kg .

_________________
Go to Heaven for the climate, Hell for the company.
Mark Twain


I can be wrong, and have plenty of examples for that ;)


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PostPosted: Sun Jan 25, 2015 12:01 am 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 983
I would kill most of your build.
I would only keep the saddle and pedals.
That said, a disc bike with never be a featherweight (nor will a gravel bike in general).
I would build it with Red 22 hydraulic with Wi-fli rear der and 50/34 crankset, or Shimano 685 or 785.
Wheels could be huge for weight reduction.
Specialized crankset is also a pretty light choice.
I have a canti crux- it is 16.75 lb. in daily driver mode.


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PostPosted: Sun Jan 25, 2015 2:53 am 
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Joined: Fri Sep 16, 2011 5:52 pm
Posts: 11
boots2000 wrote:
I would kill most of your build.
I would only keep the saddle and pedals.
That said, a disc bike with never be a featherweight (nor will a gravel bike in general).
I would build it with Red 22 hydraulic with Wi-fli rear der and 50/34 crankset, or Shimano 685 or 785.
Wheels could be huge for weight reduction.
Specialized crankset is also a pretty light choice.
I have a canti crux- it is 16.75 lb. in daily driver mode.


I would have to disagree slightly with this. My gravel bike sits barely over 16 pounds with the "heavy" eggbeaters... a 53cm Ibis Hakkalugi disc built with light, yet reliable components.


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PostPosted: Wed Jan 28, 2015 10:00 pm 
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Joined: Sun May 16, 2010 7:28 pm
Posts: 653
I came to the realization with my E5 Crux that it was never going to be a weight weenie. After carbon clinchers and a full sram red gruppo, there's not all that much I could do. I think I'm sitting somewhere around 18-19lbs. Having a 1kg penalty just for a disc brake frameset kind of hurts. Add to that the weight of disc-brake hubs, calipers, and the rotors themselves and you're never going to approach that of a comparable road frame. As with any build I'd start with the bigger stuff, wheels, crank, cockpit, saddle, cassette...


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PostPosted: Thu Jan 29, 2015 6:42 pm 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 983
Does your build include carbon tubulars?

adhumston wrote:
boots2000 wrote:
I would kill most of your build.
I would only keep the saddle and pedals.
That said, a disc bike with never be a featherweight (nor will a gravel bike in general).
I would build it with Red 22 hydraulic with Wi-fli rear der and 50/34 crankset, or Shimano 685 or 785.
Wheels could be huge for weight reduction.
Specialized crankset is also a pretty light choice.
I have a canti crux- it is 16.75 lb. in daily driver mode.


I would have to disagree slightly with this. My gravel bike sits barely over 16 pounds with the "heavy" eggbeaters... a 53cm Ibis Hakkalugi disc built with light, yet reliable components.


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PostPosted: Thu Jan 29, 2015 7:25 pm 
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Joined: Fri Sep 16, 2011 5:52 pm
Posts: 11
boots2000 wrote:
Does your build include carbon tubulars?


viewtopic.php?f=4&t=118601#p1014003

Nope. Easton xc90 clinchers w Bontrager X0 tires set up tubeless


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PostPosted: Fri Jan 30, 2015 5:43 pm 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 983
Sweet build, what is wheel weight?

adhumston wrote:
boots2000 wrote:
Does your build include carbon tubulars?


viewtopic.php?f=4&t=118601#p1014003

Nope. Easton xc90 clinchers w Bontrager X0 tires set up tubeless


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Posted: Fri Jan 30, 2015 5:43 pm 


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PostPosted: Sat Jan 31, 2015 3:49 am 
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Joined: Fri Sep 16, 2011 5:52 pm
Posts: 11
boots2000 wrote:
Sweet build, what is wheel weight?


I didn't weight them before mounting, but in the 1400-1450 gram range I believe. They do ride extremely nice set up tubeless. I'm able run around 35 psi on most my rides without worry (but I only weigh around 145).


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