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 Post subject: Can I go lighter?
PostPosted: Mon Nov 24, 2014 8:21 pm 
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Joined: Sun Jul 07, 2013 7:37 pm
Posts: 26
Bike is currently 23.7 pounds/10.75kg. Will going 1x11 bring it down much more?

Frame: 2012 Trek Superfly 100 Pro 15.5"
Headset: Cane Creek 110 Tapered
Fork: Rock Shox SID XX 15mm TA G2, set at 110mm travel
Rear Shock: Rock Shox Monarch 3.3 "B" tune; 84mm stroke/110mm travel
Handlebars: Thomson X-Country carbon flat 730mm
Grips: Lizard Skins 82mm Shorty Lock-on
Stem: Bontrager Race XXX Lite HCM carbon 70mm
Saddle: Bontrager Inform RXL Evoke 145mm carbon rails
Bottle Cage: Bontrager RXXXL carbon
Tires: Bontrager 29-3 Team Issue 29 x 2.25"
Wheelset: Easton EC90 XC carbon, Sapim straight-pull, butted spokes
Pedals: Crank Brothers Candy 11, titanium spindles
Bottom Bracket: Enduro Ceramic BB95
Crankset: SRAM/Truvativ XX 170mm GXP w/ Doval 25t oval granny
Shifters: SRAM XX Grip Shift 2x10
Front Derailleur: SRAM XX Direct Mount 2x10
Rear Derailleur: SRAM XX Medium Cage
Cassette: SRAM XX XG-1099 11-36t
Seatpost: KS LEV DX 31.6mm 125mm drop
Seat clamp: Hope Tech 36.4mm
Brakes: Shimano XTR BL-M988/M985, IceTech 180mm F/160mm R rotors
Chain: KMC X10SL Gold Nitride

Image

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Last edited by Dilberto88 on Wed Nov 26, 2014 12:54 am, edited 1 time in total.

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 Post subject: Re: Can I go lighter?
PostPosted: Tue Nov 25, 2014 2:23 am 
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Joined: Mon Nov 03, 2014 11:50 pm
Posts: 22
Location: Florida
I just ordered some Lizard Skin DSP grips for my bike, that would save you about 50 grams.

Think those tires are about 730+ each (my 2 Bontrager XR3s weigh 20g more than spec'd), and they look pretty narrow/don't look quite 2.25, so maybe something like the Ritchey WCS 29x2.1 could work. Depending on where you ride, you could do both tires, but at least do the rear as that would drop about 150 grams. I actually just replaced the rear 2.35 Nobby Nic on my 27.5 bike and it rocks. Just ordered the 29er version, so hopefully it's just as good.

These two tweaks would save you almost half a pound and would cost less than $100 :thumbup: !!


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 Post subject: Re: Can I go lighter?
Posted: Tue Nov 25, 2014 2:23 am 


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 Post subject: Re: Can I go lighter?
PostPosted: Tue Nov 25, 2014 3:57 am 
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Joined: Mon Nov 03, 2014 11:50 pm
Posts: 22
Location: Florida
Just now noticed you asked if going to XX1 would save you weight...according to this article, it's 209 grams.

http://www.bikerumor.com/2012/12/05/sra ... l-weights/

And that's for XX1 specifically. If you did X1 or X01 it's going to be minimal weight difference to your XX.

I have XX1 on both bikes and would never go back to a 2x, but for the cost to change your drivetrain, I almost think you'd be better just going to a 1x10 and ditch the front derailleur and shifter of your XX. Do that, and the changes I mentioned above, and you could probably get close to 22.5lbs...for a fs w/ a dropper that's pretty awesome!


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 Post subject: Re: Can I go lighter?
PostPosted: Tue Nov 25, 2014 3:51 pm 
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Joined: Wed Jan 18, 2012 4:23 pm
Posts: 511
Location: Midlands, United Kingdom
Going 1x10 will lose you more than 200g
Shifter - 98g
Cable outer - 40g (est)
Cable inner - 8g (est)
Front mech and bolts - 120g
Chainring - 30g (est) plus some extra savings on shorter single specific bolts and a slightly smaller chainring than the current large.

Claimed weight for the grips is 95g, lightweight foam can be as low as 15g

Not sure what the seatpost clamp is but it 'looks' fairly substantial, lighter can be had quite cheaply as its a fixed clamp.

Do you use the bottle cage? easy saving there.

There is also some scope there for some free tuning, for example the shifter cables are longer than required.

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 Post subject: Re: Can I go lighter?
PostPosted: Tue Nov 25, 2014 11:06 pm 
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Joined: Fri Apr 13, 2007 4:53 pm
Posts: 140
Rotors?


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 Post subject: Re: Can I go lighter?
PostPosted: Wed Nov 26, 2014 12:39 pm 
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Joined: Mon Sep 01, 2014 4:58 pm
Posts: 15
Edited:

I'll start by saying that a lot of these options can be considered extreme, but since you asked; "Can I go lighter?", all my answers should be valid. Your bike already looks very nice though:)

Extralite stem, grips, top cap, star nut and fork axle (or Tune if you want a quick release), new handlebars (e.g. Tune, Enve etc.), Formula R1 Racing brakes, with some exotic discs (e.g. Scrubs). Lighter seat clamp, seat, cassette, headset spacers and wheels (the ones you've already got seems really nice, but there are lighter options). Enve rims on DT, Tune, or Extradite hubs should be quite a lot lighter I think (?). Probably other lighter options as well, but those where the ones that first came to mind. Full ceramic bearings everywhere. I guess you've already got Ti/alu bolts everywhere?

As I said, lot of extreme options, but still options.


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 Post subject: Re: Can I go lighter?
PostPosted: Thu Nov 27, 2014 1:12 am 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 1003
Ditch your dropper and lock on grips- likely 2 lb savings.


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 Post subject: Re: Can I go lighter?
PostPosted: Thu Nov 27, 2014 1:12 am 
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Joined: Mon Oct 15, 2007 9:28 pm
Posts: 1003
Ditch your dropper and lock on grips- likely 2 lb savings.


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 Post subject: Re: Can I go lighter?
PostPosted: Thu Nov 27, 2014 3:03 am 
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Joined: Sun Jul 07, 2013 7:37 pm
Posts: 26
I went a long time, without a dropper.....due to the increased weight. But, a recent high-speed crash(unclipped, on descent) convinced me a dropper could have prevented a crash that put me off the bike for nearly two months. Honestly, the weight of the dropper is centered on the bike, it's barely ever felt(like hubs). My confidence has increased, since using the dropper post.


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 Post subject: Re: Can I go lighter?
PostPosted: Thu Jan 22, 2015 4:06 pm 
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Joined: Thu Jan 08, 2015 3:14 pm
Posts: 23
ax lightness seatpost
ax lightness saddle leaf for mtb
ax lightness handlebar
ax lightness wheelset+ extralite hub
ax lightness stem
sram xx1 groupset
lizard skin grip
tune u30 skyline
...list go on...but this one should make significant drop on the kg and of course your wallet...but hey ...we are in the ww forum so its normal..


maxxis tyres


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 Post subject: Re: Can I go lighter?
Posted: Thu Jan 22, 2015 4:06 pm 


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 Post subject: Re: Can I go lighter?
PostPosted: Thu Jan 22, 2015 10:09 pm 
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Joined: Sat Nov 14, 2009 6:30 am
Posts: 758
Location: Simi Valley CA
How much do you want to spend? People can rattle off ideas all day long.

Best dollar to weight? Get a narrow/wide ring and lose the front shifting parts.

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My wife is sitting next to me, and just thought that was a dildo, not a saddle.. :lol:


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