Can We Build A Sub-8KG Mountain Bike?

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  • Опубліковано 22 січ 2025

КОМЕНТАРІ • 110

  • @leitmotiph
    @leitmotiph 9 місяців тому +21

    Those cables can be shortened and cut!! 20 grams or more can easily to be found there, possibly even lighter by using light weight cable housing ;) !!!

    • @jaimenmfarma
      @jaimenmfarma 9 місяців тому +1

      I think so too, you can cut the cables and hoses and lose more than 20 g

    • @bikeradar
      @bikeradar  9 місяців тому

      For sure the cables can be cut, but we needed brakes to go back on another bike so had to leave the hoses long, definitely would save over 20g though.
      Could even lose the rebound adjuster and air top cap for the fork to save a bit more!

    • @kylebrown4293
      @kylebrown4293 9 місяців тому

      Also replace all the screws with titanium one's! Could easily get lighter there

  • @tombeck129
    @tombeck129 9 місяців тому +3

    On those trails a gravel bike would be fine. And looking at the XC trends towards more aggressive trails, you probably will never see this bike on the World Cup. 😅

    • @bikeradar
      @bikeradar  9 місяців тому +2

      Ohh for sure it's no where near as gnarly as a world cup, but sadly thats as close as we get to world cup XC around Bristol that we can legally film on!

  • @adamossowski7627
    @adamossowski7627 9 місяців тому +4

    Thinking of this frame for special gravel monster. Nice build

    • @Paulklampeeps
      @Paulklampeeps 9 місяців тому

      Are you planning to put a dropbar or alt bar ? Thanks!

    • @adamossowski7627
      @adamossowski7627 9 місяців тому

      Drop bars

    • @mellissanash7517
      @mellissanash7517 9 місяців тому

      Any reason this over a Salsa Cutthroat with a 100mm Sid Ultimate?

    • @gravelDave
      @gravelDave 9 місяців тому

      Or you could just get a Crux which would be 8kg out of the box.

    • @adamossowski7627
      @adamossowski7627 9 місяців тому

      @@gravelDavelove crux but few details put me off. Geometry for climbing- ht is better. Clearance for fast mtb tires. Better performance of mtb over gravel forks at the same weight. At the end of the day crux is more cx bike. And the price :) this bmc frame plus proper RS SID is half of crux frameset price - not SWORKS

  • @joshuaallswang8016
    @joshuaallswang8016 9 місяців тому +4

    Literally the best XC hardtail in the game!🔥

    • @mellissanash7517
      @mellissanash7517 9 місяців тому +2

      Turner Nitrous would like a word.

    • @bikeradar
      @bikeradar  9 місяців тому

      The BMC is a great bike to ride!

    • @bikeradar
      @bikeradar  9 місяців тому

      @mellissanash7517 shame they don't make the DW-link bikes anymore! 😔

  • @nahuelise4055
    @nahuelise4055 9 місяців тому

    Would like to see how much more weight can you save by going with a rigid carbon fork and a single speed cog.
    Maybe sub 7kg??

    • @oliverjacobs8594
      @oliverjacobs8594 9 місяців тому

      You can get sub 6kg with 12speed and 100mm travel if you make the right choices. You’d have to use a different frame though.

    • @bikeradar
      @bikeradar  9 місяців тому

      You could for sure go lighter by doing that, but it wouldn't be as fun to ride!

  • @wilsonbuchanan2573
    @wilsonbuchanan2573 9 місяців тому +2

    why no ESI grips? also maybe get more saving with higher end sid?

    • @bikeradar
      @bikeradar  9 місяців тому +1

      I'm not a fan of non-lock on grips, and unfortunately we had to put this video together very quickly as alluded to in the video, so ran out of time to source some lighter lock ons and a lighter fork.
      For sure though, ESI grips and a SID SL Ultimate would save a chunk of weight.
      Still have more plans for the bike though, so stay tuned!

  • @viktorlenart1125
    @viktorlenart1125 9 місяців тому +4

    "Time to break out the spanners and get cracking" - please no cracking with spanners around those expensive carbon bits 😁

    • @bikeradar
      @bikeradar  9 місяців тому

      We can confirm no carbon components were cracked, broken and/or harmed during the making of this video

  • @DavidLamon
    @DavidLamon 4 місяці тому

    Interesting build, I'll stick with a gravel bike tho, for this kind of riding

  • @HUKIT.
    @HUKIT. 9 місяців тому

    Were the tires weeping already or just lazy clean up?

    • @bikeradar
      @bikeradar  9 місяців тому

      Just due to time constraints, we had to film the bike shots very quickly and forgot to wipe the sealant off the tyres from fitting 🫠 The tyres didn't weep at all and held air perfectly

  • @LawrenceMacMacster
    @LawrenceMacMacster 9 місяців тому +1

    It's impressive considering my 26 wheels pimped up 1996 Mongoose team SX weight a hair under 9kg, I wouldn't ride it now tho 😂

    • @bikeradar
      @bikeradar  9 місяців тому

      Would make a nice gravel bike though 😉

  •  9 місяців тому

    200gr less would be easy to shave, cables and housings, ND tuned in the fork, a Gelu Sadler insteyof the schmolke, foam grips...

  • @andrewsiasparks
    @andrewsiasparks 9 місяців тому +2

    Could'a cut an inch off the seat tube and a couple cm off the bar and had sub 8 kg

    • @bikeradar
      @bikeradar  9 місяців тому +1

      Could have done, but Tom was close to minimum insertion on the post and didn't want to cut the bars down, he wanted the extra control of the wider bar.

  • @amitkumar-wj8gn
    @amitkumar-wj8gn 9 місяців тому +25

    Now tell us how much the upgrade cost.

    • @LightBranches
      @LightBranches 9 місяців тому +1

      Exactly tree-fiddy, plus tax.

    • @wedgett1
      @wedgett1 9 місяців тому +2

      The price of another bike, probably 🤣

    • @amitkumar-wj8gn
      @amitkumar-wj8gn 9 місяців тому +2

      at least one, probably two :D @@wedgett1

    • @gravelDave
      @gravelDave 9 місяців тому

      The total build including orginal bike cost is £8-9K depending on if you can get the components on a deal.

    • @bikeradar
      @bikeradar  9 місяців тому +1

      A lot! The bike as stock is $4,699, the Schmolke cockpit around $1,400, Pi Rope Wheels are around $2,700, drivetrain around $1000 and brakes around $500, so roughly $10,299 in total.
      That's still less than some off the shelf bikes though and would have been less if we had access to a frame only...

  • @Craigwdlr
    @Craigwdlr 9 місяців тому +2

    I’d like to see you do the same but with a duel suspension bike 🙂

    • @bikeradar
      @bikeradar  9 місяців тому

      We'd love to! Watch this space 😉

  • @mountaincruiser817
    @mountaincruiser817 9 місяців тому +2

    I would definitely buy a SiD Ultimate SL and safe around 300 grams instead of those Smolke parts. (Crazy sales now for those forks). Nice build nonetheless.

    • @bikeradar
      @bikeradar  9 місяців тому

      For sure, the fork is an area you could save weight

  • @mitchellsteindler
    @mitchellsteindler 9 місяців тому +1

    Pretty cool how light you can build with off the shelf parts

    • @bikeradar
      @bikeradar  9 місяців тому

      It's pretty wild isn't it! No mods, no dremel-ing, no cutting stuff off and bonding bits together, just stock, off the shelf parts

  • @TheTonicro
    @TheTonicro 9 місяців тому +1

    Epic hardtail is lighter frame, maybe even go for lauf fork if terrain allows

    • @oliverjacobs8594
      @oliverjacobs8594 9 місяців тому

      There’s still a ton of weight to be saved on the wheels, crankset, and misc. parts like the handlebar and seat post+ saddle before I’d consider switching frames or getting rid of most of the travel.

    • @bikeradar
      @bikeradar  9 місяців тому

      For sure there are lighter frames around, but this was the lightest off the shelf bike we had in for testing and is still damn light as stock! 😉

    • @bikeradar
      @bikeradar  9 місяців тому

      @oliverjacobs8594, if you can find us a lighter set of wheels than these Pi Rope's we'll be impressed! 951g for the pair is incredibly light without having to customise and hack things apart

    • @oliverjacobs8594
      @oliverjacobs8594 9 місяців тому

      @@bikeradar sure thing! I would use extralite hyperboost hubs + aliexpress 1.8gram carbon spokes + aluminum spoke nipples + any 250g mountain bike rim you can find (there’s a few out there). This should come in about 100 grams lighter than the pi rope.

  • @c.franca2259
    @c.franca2259 9 місяців тому +1

    You can instal the OVR cartrige from the Portuguese company NDTUNED that weights a little less than the raceday cartrige but its full air, full metal and it is a alternative to Brain. No lockouts. I have a 1st gen SC32 with OVR at 1190gr.

  • @masaharumorimoto4761
    @masaharumorimoto4761 9 місяців тому +1

    Love it!

    • @bikeradar
      @bikeradar  9 місяців тому

      Glad you liked it!

  • @jeskli11
    @jeskli11 9 місяців тому +5

    Not at all saying it's heavy, but a bike should always be weighed at least ridable (with pedals) or better as ridden (also with bottle cage(s), computer mount, …) in my books.

    • @bikeradar
      @bikeradar  9 місяців тому

      Very true, but we weigh all of our test bikes without pedals, as different testers use different pedals. Tom Law favours Crank Brothers, Tom Marvin uses Shimano.

  • @AndrewGrease
    @AndrewGrease 9 місяців тому +2

    At this point hardtails are clunky gravel bikes - give us a true full-sus mtb.

    • @joshuaallswang8016
      @joshuaallswang8016 9 місяців тому +3

      At this point Gravel bikes are wannabe XC bikes with way less capability off road and On flat and steep terrain a XC hardtail will dust any XC Full suspension bike. Period

    • @adamossowski7627
      @adamossowski7627 9 місяців тому +1

      All statements here are true 😉yet I love all 3 for different reasons not mentioning aero gravel bikes ❤️

    • @bikeradar
      @bikeradar  9 місяців тому

      We'd love to do a weight weenie full suspension build, though I think Tom will need to recover from the stresses caused by this one first!

    • @HkFinn83
      @HkFinn83 9 місяців тому

      They’re not that similar imo. Gravel bike is still just basically a slack road bike with bigger tyres. The geometry and position of these bikes are for totally different markets

    • @skyeait5939
      @skyeait5939 2 місяці тому

      @@HkFinn83 they're for people that can't ride with any skill or flare. Both wheels on the ground at all times and when you come to a stop it's always feet off pedals and onto ground lol.

  • @ehywa9799
    @ehywa9799 9 місяців тому +2

    BMC😍😍😍🤑🤑🤑👍👍👍👍

  • @plepgeat
    @plepgeat 9 місяців тому +1

    I'd love to know what it weighs with pedals. Or, for that matter, to see you riding it without pedals... 😉

  • @rajkumarvpost
    @rajkumarvpost 9 місяців тому +1

    Nice

  • @dan_lazaro
    @dan_lazaro 9 місяців тому +1

    My friend has a 8.7kg Keith Monster with minimal carbon parts. granted his set up is a 1x 40t front an a stupidly light geared 11-40t cassette. I can't remember the fork but it's a Manitou. The drivetrain and brakes is all deore 11 speed. It's 100g lighter than my Felt F95 on 105 And carbon wheels lol

    • @bikeradar
      @bikeradar  9 місяців тому +1

      That's an impressive build! KCNC do some very light aluminium and scandium parts that are not far off Schmolke

  • @kevankerd86
    @kevankerd86 4 місяці тому

    Cool project bike but it wouldn't last long in the greek rocky terrain. Those trails in the video are easy and smooth, therefore, they are not really pushing any limits.

  • @spacedoutboy404
    @spacedoutboy404 9 місяців тому +1

    Trickstuff Piccola brakes are lighter than Hope’s.

    • @oliverjacobs8594
      @oliverjacobs8594 9 місяців тому

      Well yeah, nothing on this bike is close to minimum weight.

    • @bikeradar
      @bikeradar  9 місяців тому +1

      We had a set of Piccola's on the way for filming, but they got stuck in UK customs. Insert your opinion on Brexit here...

  • @davidcarino6500
    @davidcarino6500 9 місяців тому +1

    Hard tail ( high end ) should weigh around a gravel bike.

    • @bikeradar
      @bikeradar  9 місяців тому

      They're getting close! Even stock, this bike was lighter than some of the gravel bikes we've had, even the "lightweight" carbon ones

  • @StratoPL
    @StratoPL 6 місяців тому

    Biggest save will be if you will change… the frame

  • @Brandall66
    @Brandall66 Місяць тому

    "is not massively uncomfortable" lol, only mildly.

  • @Aeroskiii
    @Aeroskiii 9 місяців тому +1

    My current hardtail is 7.7kg but much much much less expensive than that

    • @bikeradar
      @bikeradar  9 місяців тому

      Nice work! For sure you can go lighter, for cheaper, especially if you look second hand.

    • @Aeroskiii
      @Aeroskiii 9 місяців тому

      @@bikeradar nah all new.

    • @Aeroskiii
      @Aeroskiii 9 місяців тому

      @@bikeradar around 5k you can build something 7.5kg

    • @Anythingyoulike2013
      @Anythingyoulike2013 6 місяців тому

      Spent £800 7.9kg hard tail carbon fork r8000 crank r8000 rear derailleur, mostly used parts.

    • @Aeroskiii
      @Aeroskiii 6 місяців тому

      @@Anythingyoulike2013 yeah road parts, thing will suck to ride

  • @shafiqjan1474
    @shafiqjan1474 9 місяців тому +1

    Could you shave weight with a lighter fork? I wonder. 🤔 That would have been my 1st mod.
    I've built and lightened many a weight weenie's bike in my days and have seen the seriously intent individuals spend up to $1000 USD per gram for a lighter bike. I always said just take a good poop before you ride and you can shave pounds for free. 😅

    • @bikeradar
      @bikeradar  9 місяців тому +1

      Yep, we could save around 150-200g on the fork, but couldn't source one in time for shooting. That would be our next port of call for saving some weight, after having a 💩 of course!

  • @michal.laskowski.
    @michal.laskowski. 2 місяці тому

    Jack rabbit II pro tyres 200g less pair

  • @ThunderStruckMTB
    @ThunderStruckMTB 9 місяців тому +3

    The rats nest of cables and hoses is well over 20g.

    • @bikeradar
      @bikeradar  9 місяців тому

      Unfortunately, the brakes need to go back on another bike, so we had to leave them a touch long, but definitely an area where you could chop some weight from

  • @basvanleeuwen4502
    @basvanleeuwen4502 9 місяців тому

    Slamming the stem would help.

  • @chris22186
    @chris22186 9 днів тому

    Going tubeless will also help

  • @joneinarmattiasvisser6113
    @joneinarmattiasvisser6113 5 місяців тому +1

    I've seen full suspension bikes *with* pedals and bottle cage weigh actually under 8kg. This is a joke

  • @veganpotterthevegan
    @veganpotterthevegan 9 місяців тому +1

    Impressive for a hardtail? Cool, it should be easier build a lighter full suspension bike then😅

    • @bikeradar
      @bikeradar  9 місяців тому

      Challenge accepted 😉

  • @drugstore1987
    @drugstore1987 7 місяців тому

    PiRope wheels are fucking awesome. Riding 6 wheelsets since 2019 and never had any problems. Fast as fuck and reliable

  • @MatthewMay
    @MatthewMay 9 місяців тому +18

    Guys who weigh their bikes without pedals 👎🏻

    • @bikeradar
      @bikeradar  9 місяців тому +6

      As mentioned in another comment, it's how we weigh all of our test bikes, as different riders will use different pedals

    • @SuperOle2011
      @SuperOle2011 9 місяців тому +2

      ​​@@bikeradar But can't that be said of ALL the components then, especially when it comes down to a custom build? Then ALL components would differ in weight...

    • @joneinarmattiasvisser6113
      @joneinarmattiasvisser6113 5 місяців тому

      ​@@bikeradaryou don't ride without pedals. It's when you weigh your car without accellerator pedal... Useless

    • @joneinarmattiasvisser6113
      @joneinarmattiasvisser6113 5 місяців тому

      ​@@SuperOle2011exactly. A gravel bike has different shofters than mtb's

    • @ony3179
      @ony3179 5 місяців тому

      Weight specified on manufacturer websites don't include pedals so this should be a good comparison. Some people are just born to be Karen.

  • @arturrro6488
    @arturrro6488 9 місяців тому

    This frame is very heavy

    • @bikeradar
      @bikeradar  9 місяців тому

      There are lighter frames around, but this is far from heavy!

  • @stevemullin1195
    @stevemullin1195 9 місяців тому +2

    Lighter doesn't mean stronger especially for a mountain bike. Try doing big jumps or high stress on the frame and it's bound to break...which means throw the frame away as it can't be repaired like a metal frame bike.

    • @oliverjacobs8594
      @oliverjacobs8594 9 місяців тому

      The bike is still 2kg heavier than it a proper weight weenie mtb, it’ll be fine.

    • @bikeradar
      @bikeradar  9 місяців тому

      @stevemullin1195 carbon is actually easier to repair than aluminium, as aluminium requires heat treating, which can distort the frame after the repair.
      Carbon frames are quite easily repaired if you have the know how, we did just that in a recent video, check it out!
      ua-cam.com/video/7iXPc4nWOvc/v-deo.html

    • @gunshipanropace2gunshipand119
      @gunshipanropace2gunshipand119 7 місяців тому

      Hmm nice argument but its still an Xc mtb, i would recommend you watch Bernard Kerr instead he has one of the stiffest Mostly if not all carbon downhill bike i think that i have watched

  • @LJdynamo2024
    @LJdynamo2024 9 місяців тому +1

    1st!!

    • @bikeradar
      @bikeradar  9 місяців тому

      1,000,000 BikeRadar points heading your way!

  • @АнтонАлексеенко_044
    @АнтонАлексеенко_044 9 місяців тому

    Unless you win a race on it now it was all in vain. Go prove its worth

    • @bikeradar
      @bikeradar  9 місяців тому

      Tom will need more than a light bike to win ANY races 😂 The only race he'll be winning is the one to Donut Tuesdays in the BikeRadar office!