• 01-18-2017
    Le Duke
    How do your ENVE XCs weigh 1900g???

    Mine are just under 1500g...


    Sent from my XT1585 using Tapatalk
  • 01-18-2017
    MattMay
    Confused as well. Not sure I understand "extrapolate back." (I understand the term, just not how it's specifically applied here.) It almost seems like there might be double counting in there somewhere.
  • 01-18-2017
    alexbn921
    Quote:

    Originally Posted by karimian5 View Post
    I tried to edit my above post so I don't keep posting but it won't let me . I am forbidden for some reason .

    Anyway the bike is now 4970rams :) !!!

    Still more to do .

    I want to see some footage of this bike going Down a trail. :eekster:
  • 01-18-2017
    Le Duke
    Quote:

    Originally Posted by alexbn921 View Post
    I want to see some footage of this bike going Down a trail. :eekster:

    You'll never see pictures of it outside, let alone a gravel road, smooth double track, or a rock strewn trail.

    Sent from my XT1585 using Tapatalk
  • 01-18-2017
    alexdi
    Quote:

    Originally Posted by phlegm View Post
    I was also surprised to see your wheel weights. Would be interested to see the raw scale numbers on those (sans rubber, sealant) whenever you happen to swap out tires.

    I think there's another 1/2 lb to even 1lb available to shed, but that depends on your budget. With reasonable selections to several components (rubber, saddle, bars, bolts, grips), the loss can add up. BTW, don't see any wheel hardware (axles) listed.

    Also, is there an adapter on your front rotor to obtain the 180mm? Can you get away with 160, and also drop the adapter?

    Lastly, after frame and wheels (including rubber), your next heaviest component percentage-wise is the dropper. I realize you like it, but that's >1 lb right there from stock Scalpel.

    The wheels, ready to ride, were 3.48 lbs and 4.56 lbs. I subtracted Schwalbe's listed tire weight, actual rotor and screw weights, 60g for sealant and rim strips, and the cassette weight from the rear wheel. The result was what's in the spreadsheet.

    EDIT: Schwalbe is full of crap. I just pulled apart the front wheel. After clearing out some gunk, I get 699g each for both the front wheel (excluding rotor) and the tire. If the rear tire weighs the same, the rear wheel is 977g. So, about 1.67kg, including stickers and a full-width rubber rim strip. I don't know how BikeRadar got a number 150g less for a set with Chris King hubs. The Lefty hub is lighter than a DT 240 and the DT 350 doesn't appear any heavier than the CK's.

    I went out of my way to add the dropper. The head angle on this bike is 71.4 and the the stock stem is super-long, so it wants to pitch me over the bars on some of the local downhills. The extra pound hurts, definitely, but the post builds a lot of confidence.

    I think the axles are part of Cannondale's quoted frame weight. There's some fudge factor here, relying on third-party weights; I haven't stripped the thing down to weigh it myself. Same with the Lefty. Lots of people say they're getting 1.3kg or so; Art's Cyclery says 1402g. The total for the bike is almost spot-on.

    There's a single bracket on the front for the 180mm rotors. I'd be more likely to choose a thinner rotor than to drop the diameter, I weigh too much for anything smaller on 29 wheels.
  • 01-18-2017
    phlegm
    Quote:

    Originally Posted by alexdi View Post
    The wheels, ready to ride, were 3.48 lbs and 4.56 lbs. I subtracted Schwalbe's listed tire weight, actual rotor and screw weights, 60g for sealant and rim strips, and the cassette weight from the rear wheel. The result was what's in the spreadsheet.

    EDIT: Schwalbe is full of crap. I just pulled apart the front wheel. After clearing out some gunk, I get 699g each for both the front wheel (excluding rotor) and the tire. If the rear tire weighs the same, the rear wheel is 977g. So, about 1.67kg, including stickers and a full-width rubber rim strip. I don't know how BikeRadar got a number 150g less for a set with Chris King hubs. The Lefty hub is lighter than a DT 240 and the DT 350 doesn't appear any heavier than the CK's.

    I went out of my way to add the dropper. The head angle on this bike is 71.4 and the the stock stem is super-long, so it wants to pitch me over the bars on some of the local downhills. The extra pound hurts, definitely, but the post builds a lot of confidence.

    I think the axles are part of Cannondale's quoted frame weight. There's some fudge factor here, relying on third-party weights; I haven't stripped the thing down to weigh it myself. Same with the Lefty. Lots of people say they're getting 1.3kg or so; Art's Cyclery says 1402g. The total for the bike is almost spot-on.

    There's a single bracket on the front for the 180mm rotors. I'd be more likely to choose a thinner rotor than to drop the diameter, I weigh too much for anything smaller on 29 wheels.

    I don't know what it is about tires, but for whatever reason no 2 of them are ever the same weight. They make them at the same time, at the same place, in the same machine, with the same amount of "goop", yet the variability is ridiculous - and not just with Schwalbe.

    As for the dropper, I'm not against it by any means, but yes, it goes counter to weight goals for sure.

    A fair number of bikes seem to be "over-braked" at the factory, especially for smaller riders. I suspect this somehow relates to litigation concerns in the US. In any event, it's always nice to remove an adapter, and lose weight that way, and buy a smaller rotor. However, if you are larger and are conscious of your brake needs, then of course retain the 180. You can try KCNC as they are inexpensive, although I've found the cutouts are a bit aggressive, and there's a bit of a grab penalty for that. YMMV.
  • 01-18-2017
    alexdi
    115g is a hell of a difference, even accounting for what was probably 50g of baked-in sealant. The Maxxis tires were respectively 6g lighter and 4g heavier than quoted.

    It also turns out the previous owner had left in an ocean of sealant in the rear wheel. The tire weight is still accurate, but the correct wheel weight is: 699g front, 852g rear. 1551g. That's very reasonable. If these narrow rims don't squirm with the 2.35" Maxxis tires, I won't have much reason to upgrade them.

    Current weight is now 10.64 Kg, though that's without sealant. I'll look into KCNC, thanks. The pricing is pretty reasonable.
  • 01-18-2017
    andrepsz
    Post your light-weight bikes!
    79er (29er front) XC FS 120R/150F launch control to 100, no dropper <21lbs...sound good?
  • 02-11-2017
    rumblytumbly
    1 Attachment(s)
    Attachment 1120865


    Revised over winter with some more blowout sale items and down to 18.6 lbs now and that's about where I'm stopping to maintain the comfort level.
    Highlights:
    older chiner 29er frame (specialized clone circa ~2012)
    Syncros FL29 fork, 580 grams, looks dated but no reason to change
    Hollowgram Si cranks with Wolftooth ring
    Pacenti TL28 29 rims, BHS 180/270 hubs, alloy nips, Sapim Lasers, 1595g total ($314 with shipping from BHS on sale). Nice drop from my Blunt 35 with CXRay pro build at 2100g
    Time Atac XC6 pedals
    Thunder Burt 2.1s
    Answer 20/20 bar 197g
    DSP grips 30g
    Uno 7 60mm stem 94g
    DT Swiss RTS 10mm/9mm alloy axles (no weight savings over QR, but stiffer)
    Selle Italia SLR Max Gel Flow Ti saddle (230g)
    TRP Slate 4 brakes (297/278g) - found them even cheaper than Deore M615, will have to do a review once I haven them a while
    Ai2 rotors 160/180
    Sunrace MX3 10 cassette (448g)
    Zee shifter, Deore S+ RD, not light but work great

    I took a very budget minded approach only making purchases mostly when the item I wanted was hugely discounted, hence the goofy color scheme. Who wants a white saddle or yellow grips? I do if it's 70% off, ha.
    So far, perfect for my needs of midwest singletrack and lots of gravel grinding. I could pretty easily drop below 18 by getting rid of my beloved barends (76g), going back to a chiner carbon saddle (save 130g), drop the seatpost qr (40g), ti bolts, etc. but what I've got now is comfy and durable and I don't race, just wanted something pretty light. I've had high end stuff, but this is the lightest mtb I've had in 20 years and it sure feels good spinning it up to speed.
  • 02-24-2017
    edwardmo
    1 Attachment(s)
    My 17.8 lbs Storck;)

    Attachment 1123385

    Frame: Storck Rebelion 1.0 M size
    Fork: Rock Shox SID World Cup Dual Air 2012
    Headset: Cane Creek + Extralite Ultrastar 3 + Hypercap
    Stem: Extralite Hyper Stem 80mm
    Handlebar: EC90 590mm
    Grips: ESI Chunky
    Front Brake: Magura MT8
    Rear Brake: Magura MT8
    Rotors: Sram XX with titanium bolts
    Shifters: Sram X.0 Grip Shift 9Sp
    Front Derailleur: Sram X.0 2X10
    Crankset: Shimano XTR M970 170mm + Extralite Octaramp GARA +
    Extralite Bolt
    Bottom Bracket: FSA Mega EXO 9200 Ceramic BSA
    Rear Derailleur: Sram X.0 Short Cage 9Sp
    Cassette: SRAM XG-999 11-32 Or Shimano Ultegra 6500 9sp
    Chain: Campagnolo Record 10sp
    Pedals: Wellgo MG6
    Rims: NoTubes ZTR Alpine 32H
    Front Hub: Extralite HyperFront 32H
    Rear Hub: Extralite HyperRear 32H
    Spokes: Sapim CX-Ray
    Rim Tape: NoTubes
    Skewers: Extralite Streeters Front , Controltech Race Light Rear
    Tires: Schwalbe Furious Fred Tubeless
    Saddle: Selle Italia SLR Tekno Flow
    Seatpost: 3t dorico team 30mm seatback
    Bottle Cage: Fabric Water Bottle
  • 02-24-2017
    hdparrish
    Quote:

    Originally Posted by Crossmaxx View Post
    What you also have to bare in mind is how aggressively you are riding. No offence meant, but I don't think you're pushing your components as hard as most people are judging from your aggressive tuning jobs. I wouldn't dare trying most of them, and I weigh 58 kgs.

    Hey, Crossmaxx. Been a year. How are the trails in Sweden? Still no riding here--8 inches of fresh snow since Wednesday night.
  • 03-04-2017
    Bigjunk1


    Prototype Cannondale 29er aluminum frame
    Rockshox SID rct3
    Shimano XT 30 speed drivetrain [crank, cassette, chain]
    xt front and rear derailluers
    xt shifters
    xt brakes
    xt bottom bracket
    160 rear, 180 front Avid HS1rotors
    WTB Phase wheelset=WTB Frequency team rims
    Novatec hubs F=d811sb, R=d812sb
    C2 carbon seatpost
    C2 stem
    Next headset
    Cannondale all mountain saddle
    alum. bottle cage
    Jagwire Lex-sl cables
    Xpedo spry pedals
    Easton EC90 riser bars, 700mm
    Cannondale lock on grips
    Cannondale QR seat post clamp
    Sortie 29x2.1 tires
    Titanium and alum. bolts for most stuff

    Weighs a little over 23 pounds with my Xpedo Spry pedals ,not terrible for a 30 speed aluminum 29er.
  • 03-07-2017
    alexdi
    Quote:

    Originally Posted by chomxxo View Post
    Haven't seen a light FS 29er posted up in a while so here's mine, 21.40 pounds. Everything is fully race-tested. Awaiting shipment of a carbon steerer that should put me within striking distance of 20.9# :)

    Did you measure the before and after on that steerer? I'm curious, I have the same alloy 321 steerer (amusingly on a Scalpel; I wanted to run a non-OPI stem) and it wasn't that heavy to start.
  • 03-16-2017
    semmiho
    2 Attachment(s)
    I have built a race-ready, more or less weight weenie bike for this race season. With rigid fork. :)
    Handlebar, seatpost and seatpost clamp still "heavy" (180g, 240g and 51 g) so there are still some room for further improvement. Oh, and derailleur is only an XT (~270g), shifter is also an XT (122g), etc.
    Still, it's my lightest bike ever. Including my road bike, which is 9,1 kg... :D

    Attachment 1126871

    Weight is 8,46 kg (18,65 lbs)
    Attachment 1126877
  • 03-16-2017
    phlegm
    Can you fix the 2nd pic?
  • 03-16-2017
    semmiho
    Quote:

    Originally Posted by phlegm View Post
    Can you fix the 2nd pic?

    Is the 2nd pic OK now?

    FYI, the wheelset is an Acros XC Race 29 carbon, I measured 595g for the front and 700g for the rear wheel. :-) Rims are Duke Lucky Jack 29, 25mm internal rim width.
  • 03-16-2017
    phlegm
    Quote:

    Originally Posted by semmiho View Post
    Is the 2nd pic OK now?

    FYI, the wheelset is an Acros XC Race 29 carbon, I measured 595g for the front and 700g for the rear wheel. :-) Rims are Duke Lucky Jack 29, 25mm internal rim width.

    Thx - nice build and nice weight on the wheelset.
  • 04-02-2017
    Bengismo
    2 Attachment(s)
    This is my 7.7kg Scott Scale 29er
    Attachment 1129704

    Its got heavy pedals on it. I have yet to put SPD pedals on and I have some solid carbon forks that will get it down to around 6.7kg if I wanted it really light, but I like it more 'usable' rather than being a no suspension bike.

    This is its little brother. A 26er Scale 35 which is about 8.2kg in this picture
    Attachment 1129705

  • 04-05-2017
    phlegm
    Nice builds, but the 26" is cheating. :)
  • 04-06-2017
    Seb K
    I wouldn't say it's cheating as 26" wheels are still being used today :) - 24" would be cheating (I have seen a custom build with 24" wheels and it just looks wrong) . 26/27.5/29 are all MTB wheel sizes .
  • 04-22-2017
    davgus
    2 Attachment(s)
    Chinese frame, Lauf fork, 27.5 plus
  • 04-23-2017
    phlegm
    Very interesting combination of the Lauf, and the plus tires. Can you give us some details on the ride?
  • 04-23-2017
    Le Duke
    Quote:

    Originally Posted by davgus View Post

    That looks like a voided warranty and hospital visit in the making.
  • 04-23-2017
    davgus
    ???
  • 04-23-2017
    Le Duke
    Quote:

    Originally Posted by davgus View Post
    ???

    Most fork manufacturers require <2" of exposed steerer, between frame and stem. That looks to be more than that.
  • 04-23-2017
    phlegm
    Fair point - that's a long lever.
  • 04-23-2017
    Seb K
    Steerer is too far above the frame . It is a carbon steerer so more delicate than a metal version .Shorten the steerer and get a high rise stem .
  • 04-23-2017
    davgus
    It's slightly less than two inches. Lauf doesn't state a restriction on their installation guide. I'm an old fart. Almost all my bikes look like that.
  • 04-24-2017
    Seb K
    Quote:

    Originally Posted by davgus View Post
    It's slightly less than two inches. Lauf doesn't state a restriction on their installation guide. I'm an old fart. Almost all my bikes look like that.

    No more than 30mm spacers below the stem . You have way more than that .

    https://www.dropbox.com/sh/pmwk8vw6p...ationGuide.pdf
  • 04-25-2017
    MattMay
    2 Attachment(s)
    New Epic HT build. 19.25 lbs as shown. Faux Eagle xx1. :-)

    Attachment 1133736

    Frame: Epic S-Works HT medium (890g).
    Front Wheel: NOX Skyline 29 | I9 Torch 12x148 | Sapim CX-Ray
    Rear Wheel: NOX Skyline 29 | I9 Torch 15x110 | Sapim CX-Ray
    Tires: Maxxis Aspen 2.25 f/r
    Rotors: Formula Al Cr 2-Piece 160mm f/r
    Cassette: SRAM X01 10-42
    Fork: '17 Fox Float 32 boost 51mm rake
    Cranks: Raceface NEXT SL 175mm
    Chainring: Absolute Black Oval 32, boost
    BB: Raceface PF30
    Seatpost: Specialized Command Post xcp 50mm (418g w/out cable)
    Brake Levers: Shimano XTR M9000
    Shifter: SRAM X01
    Dropper Remote: Wolftooth REmote (integrated w brake lever)
    Rear Derailleur: SRAM xx1
    Chain: XMC X11SL
    Bars: Extralite Hyberbar UL 710mm
    Stem: Extralite Hyperstem stealth 80mm
    Pedals: Crank Bros Candy 11
    Grips: Crank Bros bolt on
    Saddle: 612 Ergowave Carbon rails

    Attachment 1133737
  • 04-25-2017
    phlegm
    Love that frame!
  • 04-25-2017
    MattMay
    Thx Phlegm!
  • 04-25-2017
    John Kuhl
    That is a solid build for such a light bike, good job.
  • 04-26-2017
    MattMay
    Thank you John! It's very capable and perfect for where I ride 98% of the time...southern Cal.
  • 04-26-2017
    rebnah
    1 Attachment(s)
    Scott Scale custom build
    Could change a few bits to get it lighter but i think 8.32 KG / 18.36 LBS is a good weight for now

    Spec as follows:
    Frame: Scale Carbon IMP technology / HMF / Tapered HT PM 160 Disc / BB92 IDS SL DM dropouts for 142x12mm SDS Shock Damping System

    Forks: FOX 32 Step Cast Float Factory Air / Kashima FIT4 3-Modes with low speed adj. / Kabolt 15x110mm axle Tapered steerer / Lockout / Reb. Adj. 100mm travel. Custom stealth decals

    Headset: Syncros Pro / Tapered 1.5" - 1 1/8" semi integ. OD 50/61mm /
    ID 44/55mm

    Bars: Thomson Carbon / ESI Extra chunky grips

    Stem: Thomson Elite X4 90mm

    Shifter: Sram XX1 Trigger

    Rear Mech: Sram XX1 / Eagle

    Speed: 12

    Chainset: Sram XX1 Eagle GXP PF Carbon crankarm QF 168 34T

    Bottom Bracket: Sram GXP PF integated / shell 41x89.5mm

    Cassette: Sram XX1 / Eagle / 10-50 T

    Chain: Sram PCXX1 Eagle GOLD

    Front Brake: Shimano XTR M9000 Disc 180mm SM-RT81 CL Icetech Rotor

    Rear Brake: Shimano XTR M9000 Disc 160mm SM-RT81 CL Icetech Rotor

    Wheels: SYNCROS 650B Tubeless ready stealth

    Tyres: Front Schwalbe Rocket Ron EVO Snakeskin Evo 27.5/650b 2.1
    Rear Schwalbe Rocket Ron EVO Snakeskin Evo 27.5/650b 2.1

    Seatpost: Thomson inline master piece 31.6 /350mm Black

    Seat clamp: Thomson Alloy

    Saddle: Charge spoon stealth reflective LTD edition black

    Pedals: Spare Nukeproof added just so it has some pedals

    Weight: 8.32 KG / 18.36 LBS
  • 04-26-2017
    phlegm
    Nice, a lot of great builds showing up lately! Nicely-chosen components too.

    This is why I have to keep upgrading - jerks!