The 4.28KG Ultralight Road Bike | Building An Illegal Hyper-Bike

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  • Опубликовано: 14 окт 2024

Комментарии • 3,9 тыс.

  • @gcntech
    @gcntech  5 лет назад +1372

    How light?! Do you have a super light weight build?

    • @sandydennylives1392
      @sandydennylives1392 5 лет назад +28

      Me big tubsie, so Steve won't let me borrow it. Perfect for the Flandrian cobbles mind. Or the Tesco's shopping run with a ginormous D lock.

    • @MR-dv6ms
      @MR-dv6ms 5 лет назад +77

      6.28 kg cannonade Supersix high mod. Zipp 202s, I love it

    • @AndrewTSq
      @AndrewTSq 5 лет назад +129

      This video made my bike feel like its been made of concrete actually.

    • @Ecrireenfrancais
      @Ecrireenfrancais 5 лет назад +27

      I want to build an alloy hyperbike at less than 7 kgs :).

    • @rsrs8632
      @rsrs8632 5 лет назад +69

      20 kilo ... and then I put my panniers on there.

  • @marcelorodrigues1683
    @marcelorodrigues1683 4 года назад +5057

    There is no footage of steve riding the bike because obviously he rides naked.

    • @samayala3837
      @samayala3837 4 года назад +57

      AHHAHAHAHAHAHA

    • @hamedhaydari9581
      @hamedhaydari9581 4 года назад +287

      Thats nothing, I only eat an apple once a week and take diarrhea tablets to remove excess waste from my body before I ride my bike. I also only wear ultra light underwear to save weight. In addition to that I shave all my hair for weight reduction and removed all my reproductive and unecessary organs for weight reduction. So including my bike and my self weigh a total of 37kg.

    • @codexofficial9922
      @codexofficial9922 4 года назад +41

      @@hamedhaydari9581 did you write reproductive organs?

    • @austinhsu3228
      @austinhsu3228 4 года назад +92

      @@codexofficial9922 he had to sell his organs to buy his bike

    • @holypain8152
      @holypain8152 4 года назад +57

      @@hamedhaydari9581 That's still too much. I removed everything from my body, except my organs and head.
      My organs are in a bucket, that's made of aluminum for weight reduction.
      You need to do it, I have never felt so good in my life....well actually...I don't feel anything and my doctor says that it's a wonder that I'm still alive.

  • @andyklyon
    @andyklyon 5 лет назад +1754

    Was really hoping Steve was going to be a heavy set bloke, smoking 40 a day 😂😂

    • @justicewarrior9187
      @justicewarrior9187 5 лет назад +85

      Just like all those hyper car owners

    • @alantaylor6691
      @alantaylor6691 5 лет назад +37

      You can't safely ride a lightweight road bike like this unless you're lightweight yourself! I think the main killer is the wheels, I believe these kind of wheels have a very strict weight limit. Also a heavier guy would tend to be too powerful for a lot of these hyper-light weight components.

    • @andyklyon
      @andyklyon 5 лет назад +17

      @@alantaylor6691 yeh carbon standard are recommended for max 120kg riders. Lightweight carbon can be as low as 80-90kg. I think the hunt hill climb wheelset is a good example of low max rider weight.
      My point was purely, the people who buy upgrades could do with riding up more grades before they do 😉

    • @alantaylor6691
      @alantaylor6691 5 лет назад +17

      @@andyklyon Yeah absolutely. I don't know how true it is, but I heard that Chris Froome's race bike has a weight limit of somewhere in the 60 - 70 kg range. Even the high mod carbon frames take like around the 120kg area, so I thought that must be about the wheels. I'm also thinking that with the UCI weight limit, you could intelligently choose where to have the weight, as I heard that it's better to have the weight on the frame rather than the wheels because of the rotational weight of wheels affecting performance. So if you put more of the weight centre of mass as possible, then light as possible wheels, maybe that's better for performance. Maybe this is what Froome and the likes are doing for their road bikes, using the lightest wheels possible for their body weight, then putting the rest of the weight that they must more centre of mass.

    • @hugoburton5222
      @hugoburton5222 5 лет назад +1

      Best comment. Everyone upvote

  • @ilya4759
    @ilya4759 4 года назад +4224

    He also removed his teeth and replaced them with carbon fibre implants, saving 100 grams

  • @gwynnlyell7338
    @gwynnlyell7338 5 лет назад +3939

    I’ll bet the money he spent building that bike weighs more than the bike.

    • @Juiceboxer0
      @Juiceboxer0 4 года назад +71

      probably not unless its in coins

    • @masterbaiting9730
      @masterbaiting9730 4 года назад +238

      @@Juiceboxer0 Haha get a life

    • @Juiceboxer0
      @Juiceboxer0 4 года назад +31

      @@masterbaiting9730 got one thanks

    • @Juiceboxer0
      @Juiceboxer0 4 года назад +214

      @@masterbaiting9730 you got me thinking so I looked it up. A dollar is a gram so it would be $4,280 if in singles. So it might have actually cost more. crazy

    • @jheddrickloyola3103
      @jheddrickloyola3103 4 года назад +22

      koglowa ok boomer

  • @eng.ahmedamir7606
    @eng.ahmedamir7606 5 лет назад +1564

    Him: "the pedals are quite unusual"
    Me: "he doesn't really have any'

    • @cyclenutter2715
      @cyclenutter2715 5 лет назад +21

      haha yes

    • @richardbirks
      @richardbirks 4 года назад +62

      I've saved 200 grams in weight on my pedals by only installing the axles, but my cleats weigh 300 grams each ;-)

    • @SK8R43
      @SK8R43 4 года назад +2

      umm, ever hear of clip ons? LMAO

    • @prabhanieliyanage6860
      @prabhanieliyanage6860 4 года назад

      So true

    • @grantm6514
      @grantm6514 3 года назад +29

      Well, after he drilled the lightening holes through his tibias he realised that he could just poke the bare pedal shafts into the holes and pedal that way. Brilliant really.

  • @neft16
    @neft16 4 года назад +386

    Steve seemed like exactly the kind of guy you would suspect to build such a bike...

    • @Elpappydaddy
      @Elpappydaddy Год назад

      hahahaha I don't know why but you are 100% correct.

  • @nickhumphrey4833
    @nickhumphrey4833 5 лет назад +494

    I can half imagine Steve going to his local GP saying "look doc if you take out my appendix now its gonna give me a weight saving of about 1kg, its unnecessary weight, man- I don't need it".

    • @earthstick
      @earthstick 5 лет назад +16

      Nick Humphrey I’ll bet he has had an enema.

    • @almarc
      @almarc 5 лет назад +6

      @Yard Sale Dale Like a sandpapered frame isn't painful? Buddy, i think he won't really care.

    • @paulcuthbert
      @paulcuthbert 5 лет назад +3

      I wouldn't be going to my GP if I wanted a laparoscopic appendicectomy, to be fair...

    • @nickhumphrey4833
      @nickhumphrey4833 5 лет назад +8

      @@paulcuthbert im not a medical expert anyone who interprets my comments in any literal sense might miss my attempt at humour

    • @georgesolomon5696
      @georgesolomon5696 5 лет назад +15

      Probably had one of his balls removed to save som weight.. lol

  • @ridinglikearussian5945
    @ridinglikearussian5945 3 года назад +681

    How to make it even lighter:
    1. Smaller cassette and shorter deraillur for shorter chain length
    2. Shallower rims for less rim material
    3. Fewer spokes in the rear wheel
    4. Drill holes in the saddle wherever possible
    5. Pressurize the frame with hydrogen

    • @bbbastii8048
      @bbbastii8048 2 года назад +215

      Workout and lose 10 pounds

    • @leonschumann2361
      @leonschumann2361 2 года назад +60

      make it 1x removing the shifting mechanism from the left STI, the cable routing derailleur and 2nd chain ring. remove bottle holder

    • @EnterTheOrb
      @EnterTheOrb 2 года назад +34

      @@leonschumann2361 but then you need a larger rear cassette. Might aswell go fixed gear to go super light

    • @vicomi999
      @vicomi999 2 года назад +54

      @@EnterTheOrb yeah then you can even remove the brakes saving even more weight

    • @keit273
      @keit273 2 года назад +17

      Step 1: replace the 12 speed cassette with a single speed cog. chops the weight of the gears by about 80% and also allows you to remove the deraileurs saving even more weight

  • @grymbathym635
    @grymbathym635 4 года назад +989

    Steve replaced half his words with "umm" for weight reduction

  • @Iheartdgd
    @Iheartdgd 5 лет назад +2971

    I had all of my bones replaced with carbon fiber for weight reduction. Soon I’ll be having one of my kidneys removed, who needs 2 kidneys anyway.

    • @soaringvulture
      @soaringvulture 5 лет назад +247

      Finally somebody who's making sense. Bodies are where we can get the most savings in weight.

    • @Iheartdgd
      @Iheartdgd 5 лет назад +88

      I’m also considering pulling a Lance Armstrong. No, I don’t mean EPO and testosterone, I’m going to have one of my balls removed.

    • @soundninja99
      @soundninja99 5 лет назад +44

      @@Iheartdgd I chopped my feet a while ago. They implanted cleats in it's place.

    • @johnbarron4843
      @johnbarron4843 5 лет назад +43

      I'm just a head. Best weight reduction ever.

    • @justajun3554
      @justajun3554 5 лет назад +13

      I ditched my whole foot from the knee down, and have some carbon fiber tubes and cleats instead.

  • @matthewsymm2599
    @matthewsymm2599 4 года назад +448

    Me still wondering to this day how those pedals work

    • @SoulTouchMusic93
      @SoulTouchMusic93 3 года назад +10

      As if you hadn't had a broken pedal before and just pedal on the stem. If those pedals spin they're alright although I wouldn't bother. I think the grip will outweigh the weight loss.

    • @frankmundo4300
      @frankmundo4300 3 года назад +5

      Click into shoes lol

  • @at3812
    @at3812 5 лет назад +3887

    all talking about the grams, but no footage of the actual riding experience... wasted video

    • @izhamsaad
      @izhamsaad 5 лет назад +52

      i hope steve not gaining weight so much these days

    • @1nvisible1
      @1nvisible1 5 лет назад +47

      2.7g headset cap? Amateur.

    • @tagueobright736
      @tagueobright736 5 лет назад +5

      I agree

    • @jasonhorton9920
      @jasonhorton9920 5 лет назад +36

      Not really because riding experience is incredibly subjective

    • @StoutProper
      @StoutProper 5 лет назад +33

      You'd better not be eating anything for a week before riding on this bike or you'll have wasted all that hard work

  • @sebastianeiselt37
    @sebastianeiselt37 4 года назад +202

    The Dirt on my mtb is heavier than this. And i clean it every week.

  • @jefferoneron
    @jefferoneron 4 года назад +463

    OMG look at steve himself. he weights ONLY 38 KILOGRAMS.

    • @iamandreja
      @iamandreja 3 года назад +82

      He is skinny because he can't afford to eat, spent all of his money on the build.

    • @julianreverse
      @julianreverse 3 года назад +57

      He replaced his bones with carbon fibre bones.

    • @louisharrington-edmans6737
      @louisharrington-edmans6737 3 года назад +44

      @@julianreverse these femurs weigh 300g a pair but Steve's cut off 10 cm because he doesn't need it

    • @gabrieleferraro4782
      @gabrieleferraro4782 3 года назад +2

      he weighs as much as his clothes

  • @catscrossing
    @catscrossing 5 лет назад +763

    i love how he tried really hard to shave off literally grams here and there, but could not do without two bottle holders )

    • @rogerhonacki5610
      @rogerhonacki5610 5 лет назад +45

      Arseniy Rastorguev Water is life in some places...

    • @AKindChap
      @AKindChap 5 лет назад +127

      Arseniy Rastorguev Doesn’t matter how light your bike is if you’re sat on the floor next to it because you’re dehydrated.

    • @taeril1
      @taeril1 5 лет назад +171

      Those are helium bottle holders not for water

    • @umialam7408
      @umialam7408 5 лет назад +17

      taeril1 adding bottles of helium would make the bike heavier

    • @taeril1
      @taeril1 5 лет назад +5

      @@umialam7408 not really

  • @DouglasThompson
    @DouglasThompson 5 лет назад +2201

    How are you gonna build a super light bike and add 2 water bottle holders?...lol

    • @doomslayer5191
      @doomslayer5191 5 лет назад +347

      Stay hydrated

    • @LCST237
      @LCST237 5 лет назад +193

      @@doomslayer5191 no. Water will make you heavier

    • @doomslayer5191
      @doomslayer5191 5 лет назад +282

      @@LCST237 stay dehydrated?

    • @andrew66769
      @andrew66769 5 лет назад +368

      @@doomslayer5191 dehydration = less water = less weight

    • @doomslayer5191
      @doomslayer5191 5 лет назад +90

      @@andrew66769 I think you're forgetting the other effects of dehydration than just "less weight"

  • @edo153
    @edo153 3 года назад +206

    There’s still weight savings to be had. He could have sanded the tires, sanded the brake pads to 1/8 of pad left and dremel holes in the seat

    • @MetalY2KMusic
      @MetalY2KMusic 3 года назад +7

      I can't say I even disagree with the bike seat idea and maybe even more minimal pads.

    • @cvdavis
      @cvdavis 3 года назад +14

      Use Kevlar or cord spokes. Light on the grease. Narrower handlebar. No bar tape but roughen they bars. Remove bar ends. Change it to a one by. No from derraileur, one less chain ring, less cables, lighter brighter to just a brake. No valve caps if he had them. Shorter cranks….

    • @jimkear6749
      @jimkear6749 3 года назад

      Smaller chainrings and smaller sprockets and then take our a few links of chain.

    • @bmxscape
      @bmxscape 2 года назад +7

      @@cvdavis the idea is a light functional road bike not the lightest bike on earth

    • @marsbar7099
      @marsbar7099 2 года назад +1

      Bottlecages can go

  • @TheRealMycanthrope
    @TheRealMycanthrope 4 года назад +564

    How to turn a 5kg bike into a 4.28kg bike.
    Totally worth the effort /s

  • @danielbum912
    @danielbum912 5 лет назад +416

    I'm personally not obsessed with grams but I would so love to try this bike out, if only for five minutes just to see how 4.28kg feel. I imagine it's insane

    • @gcntech
      @gcntech  5 лет назад +23

      We would too!

    • @danielbum912
      @danielbum912 5 лет назад +89

      @@gcntech WAIT Steve didn't let you take it for a quick spin?!

    • @Mine96craft
      @Mine96craft 5 лет назад +3

      Yeah, why would I spend my money on the bike when I can still get faster through training.

    • @olivierzozo
      @olivierzozo 5 лет назад +11

      Its me we speak about art of mechanics here, not a bicycle aiming at performance

    • @knecht6974
      @knecht6974 5 лет назад +8

      @@danielbum912 If I had out hundrets of hours and thousands of dollars in a bike build from parts I wouldnt let any old cunt with a camera drive it either.

  • @dansotelo228
    @dansotelo228 4 года назад +84

    FYI: 4.28 K is less than 9.5 lbs... My customer/friend made such a bike at 11.2 lbs using a Storck frame, basically using the same wheels and components in this video. He quickly found out that it was very tiring to ride downhill as he had to pedal hard to maintain any kind of speed as his super Lt/Wt wheels carried no inertia. His hyper light bike taught me a lot of things about do & don'ts for racing bikes. For example, just before Kona Iron man, my little pro shop in Seattle fills up with incredible TT bikes for last-minute tune-ups. A woman pro of short stature using 600c wheels was ill-advised to switch from the old ZIPP carbon/alum wheels to the new lighter ZIPP all-carbon wheels which are about 400 grams lighter. I told her the wheels are far too light as they carry very little inertia to help you maintain speed on those long, flat, windy Kona roads and will be hell to pedal in a headwind. She said she got the advice from a pro rider and is going to try it anyway. I advised her to take along her old ZIPP wheels just in case... A few days later she calls me from Kona telling me during practice her bike was extremely slow wondering if her brakes were dragging or if her rotational wheel balance (which I do), somehow got messed up?!?! Right away I knew the problem and reminded her how her new ZIPP wheels were too light. I then asked her if she took her old wheels? In a puzzled voice, she said "yeah, but why?" I told her to put on her old ZIPP wheels and go practice, problem solved. Sure enough, she calls me the next day all excited telling me how fast her bike was.
    Now when she has a race with a lot of climbing she uses her new Lt/Wt ZIPP wheels. And when she races on flat fast TT courses like Kona she uses her old heavier ZIPP wheels with great success.

    • @daredemontriple6
      @daredemontriple6 Год назад

      Conservation of momentum at it's finest! It's amazing how many cyclists - especially those with the money for multiple sets of carbon wheels - don't realise the difference it makes. Sure they might be more weight to lug up climbs, and sure they might be a bit slower off the mark, but the trade-off is not needing to accelerate nearly as much or as often since you aren't slowed down by the average undulation in the road!

  • @marlondecarne7118
    @marlondecarne7118 5 лет назад +663

    what about the pedals? you didnt ask steve about it?

    • @rastorov7
      @rastorov7 5 лет назад +22

      No ball bearings in these pedals, just DU bushings. I wonder how effective is the power transfer.

    • @DjelQc
      @DjelQc 5 лет назад +2

      Ultralite Cirrus Ti

    • @OllieBridgewood
      @OllieBridgewood 5 лет назад +166

      Apologies about that, i did ask him, but forgot to include it at the end of the video. Basically, the pedals are mega light but a lot more difficult to click in and out of compared to a look or spd sl. Being much less practical, Steve says that most of the time when he rides the bike, he actually uses shimano pedals, but will use the mega light ones on special occasions.

    • @marlondecarne7118
      @marlondecarne7118 5 лет назад +4

      Oliver Bridgewood that’s exactly what I wanted to know. Clipping in and out of that! I hvnt seeing that type of pedal before.

    • @stevenrose3352
      @stevenrose3352 5 лет назад +10

      @@marlondecarne7118 you can probably find old articles from the time they were released. The downside is that to unclip you have to push the cleat inboard and lift. Obviously Shimano is much more practical (and I changed the spindle for ti in those ones too to keep the weight down)

  • @AndrewTSq
    @AndrewTSq 5 лет назад +590

    It would have been kind of fun if Steve was like 150kg :)

    • @MeenakshiDutta-cu5vi
      @MeenakshiDutta-cu5vi 5 лет назад

      No it would be stupid, extremely so, for you have no practical sense whatsoever, plus is your display of what a unique one like you would call common sense

    • @AndrewTSq
      @AndrewTSq 5 лет назад +18

      @@MeenakshiDutta-cu5vi Not sure if I understand what we talk about?

    • @anumba1
      @anumba1 5 лет назад +8

      any normal man would crush the bike under his own weight of sack and balls

    • @jordandurham8951
      @jordandurham8951 5 лет назад +1

      Shima Marsha Hush Shona, & Lighten up a bit.

    • @ahoymatie9286
      @ahoymatie9286 5 лет назад +4

      @@MeenakshiDutta-cu5vi you're fun at a party.

  • @gustafbostrom6669
    @gustafbostrom6669 3 года назад +67

    "Steve managed to cut out some fat and inner skin from his cheeks (nice hack!) and saved 500 grams !
    Haircut, ONLY 30 grams!?!"

  • @Vii_DT
    @Vii_DT 5 лет назад +377

    That ax-lightness stem looks like it needs to visit a urologist...

  • @darius2640
    @darius2640 5 лет назад +779

    will it shatter when you hit a bump?

    • @brysonszy6306
      @brysonszy6306 5 лет назад +72

      doubt so, the frame still has the structural integrity of a cannonsale supersix evo

    • @alfreddelatourquipenche8287
      @alfreddelatourquipenche8287 5 лет назад +51

      Curbs are not for touching.

    • @norgepalm7315
      @norgepalm7315 5 лет назад +159

      I once hit a pothole and had to sell both my car and wife

    • @justajun3554
      @justajun3554 5 лет назад +15

      A bump is not something that you would hit on a road bike.

    • @strazmiejska_5189
      @strazmiejska_5189 5 лет назад +25

      no, it will fly away

  • @ganimed1976
    @ganimed1976 3 года назад +4

    I built up a very light retro MTB two years ago. The frame is a Sansvik USA made Centurion Titanium SX from around 1992-94. The complete bike weights only 8,4kg what is amazingly light using only bike parts from the early 90's like a Marin Titanium Stem-Bar combo, Selle Italia Flite Evolution 2 Carbon saddle, Syncros Titanium seatpost, Tune AC11 Ti bottom bracket, Grafton Joysticks cranks, Poggipolini Ti pedals, a light 790grams Shogun Zero cromo Fork, XTR M900 Deraileur with SRP aluminum bolts, Tech-Lite brake Levers, Dia-Compe 987 Cantis with Ti tuning kit, I also replaced all steel bolts and screws for titanium and aluminum screws and I replaced the original steel axles and the steel freehub from my XTR M900 hub-set and built in the titanium rear axle and freehub from the XTR M950 hub-set and an SRP titanium front axle. fotos.mtb-news.de/p/2428681?in=user

  • @eclecticaro
    @eclecticaro 5 лет назад +366

    Now put 2 x 3.5kg U-locks in your backpack..

    • @basedgodstrugglin
      @basedgodstrugglin 5 лет назад +62

      I was about to ride to work without my lock and this comment reminded me to grab it

    • @suchasreallife
      @suchasreallife 5 лет назад +7

      Leave the lock at home and bring it into the office

    • @Methodical2
      @Methodical2 5 лет назад +4

      @@suchasreallife Agree. If I can't bring it in, I ain't coming in.

    • @budgetking2591
      @budgetking2591 5 лет назад

      LOL

    • @eacorion
      @eacorion 5 лет назад

      And just don't slamm em on the frame

  • @misimaromemes5172
    @misimaromemes5172 5 лет назад +521

    Did you cut out the part where you ride it to save some Gigabytes ?

    • @antonhelsgaun
      @antonhelsgaun 3 года назад +5

      You don't ride a bike with carbon chainrings

    • @misimaromemes5172
      @misimaromemes5172 3 года назад +11

      @@antonhelsgaun then why have it ?

    • @MiGujack3
      @MiGujack3 3 года назад +1

      @@antonhelsgaun not for long haha

    • @Sharpless2
      @Sharpless2 3 года назад +1

      @@antonhelsgaun bs... these are made to be actively used, and they look pretty cool.
      www.carbon-ti.com/products/chainrings/x-carboring-road-chainrings

    • @Fred_the_1996
      @Fred_the_1996 3 года назад +2

      @@Sharpless2 what about when a tooth breaks? There goes what's left of your life savings

  • @jonaswagner8884
    @jonaswagner8884 3 года назад +91

    Next time: Fill the frame with hydrogen to make it lighter than air!

    • @davidng4329
      @davidng4329 3 года назад +1

      smart

    • @Fred_the_1996
      @Fred_the_1996 3 года назад +3

      Sm🅾️rt

    • @ypsiow1008
      @ypsiow1008 3 года назад +2

      Helium would be safer. Somebody did a study before by filling in helium gas into a rugby or football, but there was no significant difference in performance.

    • @maximiliandeisz2961
      @maximiliandeisz2961 3 года назад

      @@ypsiow1008 well this is bikes
      where you have 70-kilo persons ride 4kg bikes and what to lose 500g of the bike to get faster.
      I actually would like to know if you have a team of pros(for the sample size) and split them in 2 groups. they all ride their normal bikes, but for half of them there was 500g/1kg of weight added into the lower part of the frame, and for the others not. The next week they ride the same route, but the riders that had the weight added don't have it that time, and the ones that didn't have it get it for that ride. You then could compare the 2 results.

    • @zerodeath232cole3
      @zerodeath232cole3 3 года назад +5

      or just vacuum all the air out

  • @dumbleduke4225
    @dumbleduke4225 4 года назад +125

    I appreciate what’s been done here as a demo exercise but I think once you get down to a certain minimum weight function is massively compromised. I bought a hollow link chain and the instant I met a hill and put some power down it instantly snapped. I’d hate for something more important like a handlebar to fail doing 60mph downhill 🙈

    • @patheddles4004
      @patheddles4004 4 года назад +18

      Yeah I snapped a chain on an uphill once. Not fun. I'm way more interested in structural integrity than in light weight.

    • @EnterTheOrb
      @EnterTheOrb 2 года назад

      How many miles had the chain done? My normal KMC chain snapped after ~2000 miles of use.

    • @0xsergy
      @0xsergy 2 года назад

      @@EnterTheOrb i assume new.

    • @benis9965
      @benis9965 Год назад

      specially for people like me that love to put as much brute force into pedalling as possible on a sprint, for the fuck of it, that bike’d probably feel like a twig

    • @lovemesomedetail
      @lovemesomedetail Год назад +3

      the drilled brake levers give me anxiety

  • @teamlumixgear6865
    @teamlumixgear6865 5 лет назад +49

    Bottlecages, ..... 2 of them ????? this guy is nuts

    • @TheSteinbitt
      @TheSteinbitt 5 лет назад +4

      Team Lumixgear bottles of hydrogen I’m sure:)

  • @zerocooljpn
    @zerocooljpn 4 года назад +37

    we all wanted to see Steve riding the bike, and hear how it feels compared to a heavier bike...

  • @sturmradek
    @sturmradek 5 лет назад +502

    I strongly recomend filling the tubes and the frame with helium.

    • @MetalY2KMusic
      @MetalY2KMusic 5 лет назад +40

      Helium adds weight, at equal PSI to oxygen, since it is a less dense gas. You need more helium per square unit of space to equal to the same pressure which means more weight

    • @micronyaol
      @micronyaol 5 лет назад +67

      @@MetalY2KMusic helium is lighter than air, so bike mass will be more, but it weight is less since it now trying to fly away

    • @MetalY2KMusic
      @MetalY2KMusic 5 лет назад +11

      @@micronyaol If you had an equal amount of density in the gas, yes, but if you go for equal PSI that you would have in air in the tires, they become heavier since there are less molecules because it is a less dense gas.

    • @kotofu
      @kotofu 5 лет назад +81

      @@MetalY2KMusic that's not how it works. Ever heard of pV=nRT? Pressure is proportional to the amount of gas molecules, not the mass of the gas.
      According to your logic, helium balloons would just deflate until they no longer provide lift because they provide less pressure than surrounding air.

    • @MetalY2KMusic
      @MetalY2KMusic 5 лет назад +7

      @@kotofu Somewhere, you misread what I wrote.
      That's not my problem.
      You don't want to debate the actual topic of adding helium in place of oxygen to bike tubes will mean more weight, because it's true.

  • @elliottsaunders8754
    @elliottsaunders8754 5 лет назад +221

    Me: so steve, what is it like to ride the bike
    Steve: ummmm
    Me: intresting, how fast can you go on this light bike.
    Steve: ummmm
    😂😂😂

    • @phwoarprozak
      @phwoarprozak 4 года назад +7

      "front end's quite light"

    • @mamilx6607
      @mamilx6607 3 года назад

      There is no way I get on a bike like this for anything other than climbing.

    • @Fred_the_1996
      @Fred_the_1996 3 года назад

      The aero looks trash ;-;

  • @danielhertercasagrande1686
    @danielhertercasagrande1686 Год назад +2

    As a Junior rider I had a trainer who has asked us to train instead of drilling wholes in the chain wheels and brakes
    The trainer became later DS of a pro team with two wins in TdF- he told a friend of mine that Hinault just rode the material of the sponsor and didn’t care for tuning

  • @lmao5125
    @lmao5125 5 лет назад +244

    Who in the world would carry 2 water bottles riding this bike?

    • @stevenrose3352
      @stevenrose3352 5 лет назад +68

      I use it for training so gotta have 2 bottles for longer rides. But yeh I could've taken 1 off for the video!

    • @rappide
      @rappide 5 лет назад +12

      True, looks like massive faux pas :)

    • @stevenrose3352
      @stevenrose3352 5 лет назад +6

      @@rappide 😂

    • @smitajky
      @smitajky 5 лет назад +22

      And if you WERE carrying 2 Litres of water it would rather make a mockery of the rest of the weight of the bike.

    • @OTBkid
      @OTBkid 5 лет назад +124

      The water he carrys actually has the second hydrogen molecule stripped off to save weight.

  • @sssxxxttt
    @sssxxxttt 5 лет назад +192

    Very well executed by Steve. There must be hundreds of hours of work and love put into that bike. And thanks for letting us see it!

    • @gcntech
      @gcntech  5 лет назад +7

      Agreed! Thanks Anders

  • @PilsburyLJ
    @PilsburyLJ 5 лет назад +60

    I was really hoping Steve was revealed to be 6’4” and 15 stone

  • @fredclements5474
    @fredclements5474 Год назад +1

    and then its a windy day you go in the bar for a drink and you come out to find your bike has blown away

  • @stuartdryer1352
    @stuartdryer1352 5 лет назад +11

    People are commenting that this bike would be unsafe but if all the individual parts are sound there is no reason to think they will fail.

  • @igotsth
    @igotsth 5 лет назад +78

    come on guys. It might've picked up some 5g dirt if he test drove it.

    • @seven9766
      @seven9766 4 года назад +5

      true actually. My mtb weighs about 15kg (including all commuting accessories). It got 100g lighter by cleaning it after 400km

  • @enam9000
    @enam9000 3 года назад +1

    His last name is Rose, imagine he was your teacher in school and you had to call him Mr Rose 😆

  • @rajasimanta
    @rajasimanta 5 лет назад +39

    Steve's working to reduce Earth's gravity in his next project

    • @dazzershell
      @dazzershell 4 года назад

      100kg Man on Equator is lighter, that if he would stand on the Pole, on 300g.

  • @nichoIas_
    @nichoIas_ 5 лет назад +119

    I was _weighting_ for him to ride it

  • @DrPrateekJoshi
    @DrPrateekJoshi 3 года назад

    was waiting for you to drive it!!

  • @skyjuiceification
    @skyjuiceification 5 лет назад +34

    My favorite vid. I actually watch it every couple of days for inspiration. just when I think I'm some kind of bike geek, I look at this.

  • @SubMariner_
    @SubMariner_ 5 лет назад +73

    Why bother having 2x ??? Would save a few more grams without the front mech and an extra chainring.

    • @david131092
      @david131092 5 лет назад +8

      Sub Mariner_38090 I have a fibre lyre chainring - the salesman told me that those chainrings can’t take more than 1000w. You need to go for the aero one which is slightly heavier.
      He’ll need two if he decides to sprint mid ride!

    • @SubMariner_
      @SubMariner_ 5 лет назад +6

      @@david131092, thanks for the info, much appreciated. I was under the impression that Steve was just trying to save weigh but you're right, if he needs to put more than 1000W that's the way to go. Although it may be extremely hard to do so give the pedals he used 😉 Hey, just kidding.

    • @philadams9254
      @philadams9254 5 лет назад +7

      Going 1x and other hacks used by the UK HC scene will save weight but a lot of weight weenies prefer to try and keep the bike as complete as possible. There's just something nicer about having a mega light bike that is still "normal". That 2.7kg bike from a few years ago was also a standard spec so the shortcuts are not really needed if you're still above 3kg.

    • @SubMariner_
      @SubMariner_ 5 лет назад +2

      @@philadams9254 that makes a lot of sense. Thx!

    • @fredjohnson4779
      @fredjohnson4779 5 лет назад +4

      I believe there is some type of "qualification" with this whole weight thing - they require it to have 2 bottle cages and a front / rear der. Seriously, I'm not speaking factually but what it seems to be online, on blogs and such.

  • @whothefoxcares
    @whothefoxcares 4 года назад +8

    Show us Steve's *drilled out metatarsal bones,* that fit his pedals.

  • @LD-bv1pm
    @LD-bv1pm 4 года назад +38

    I remember lining up in a race against a guy who'd done similar to his bike, I avoided him in case he hit a small pebble and it broke something in half :)

  • @DurianriderCyclingTips
    @DurianriderCyclingTips 5 лет назад +207

    Steve is one of those vegans who peels his bananas in store before taking them to the check out xD

    • @KXP70
      @KXP70 5 лет назад

      This makes no sense

    • @Iheartdgd
      @Iheartdgd 5 лет назад

      I don’t get it

    • @splashpit
      @splashpit 5 лет назад +1

      I heard he picks the seeds out of watermelons .

    • @anythingatall8550
      @anythingatall8550 5 лет назад

      Plastic sugery

    • @eltoro747
      @eltoro747 5 лет назад +5

      I heard he drills holes in his condoms to save weight.

  • @BennyH11
    @BennyH11 3 года назад

    Wow Steve seems like a bag of fun!

  • @haenson8021
    @haenson8021 5 лет назад +58

    That aluminum cassette has a lifespan of about 200km, maybe the carbon rings are worn out even before that.

    • @stevenrose3352
      @stevenrose3352 5 лет назад +11

      Fake news. I've heard similar anecdotes about longevity as well by others who've used and raced with them. road.cc/content/review/121996-fibre-lyte-aero-carbon-chain-ring

    • @Antti5
      @Antti5 5 лет назад +5

      @@stevenrose3352 He's correct about the aluminium cassette though? There's a reason they're mostly steel, and possibly titanium but only for the larger cogs. Aluminium just doesn't last very long there.
      That being said, the bike would be way below 5 kg with essentially no sacrifice in functionality, durability or comfort. It's impressive. In addition to the cassette, I'm mostly thinking about double pivot brakes, "normal" cables and casings, normal hoods, softer bar tape.
      On the other hand, you could shave a fair bit from the wheelset, 200 grams or so I imagine. Some tubular rims are lighter, especially if you go for low profile. Also, I think those are Tune MIG70 and MAG170 hubs on the wheels -- very nice, light and durable, but also Tune's cheapest model. :) There are some exotic ones that use straight-pull spokes without flanges, and have carbon fiber axles.

    • @stevenrose3352
      @stevenrose3352 5 лет назад +8

      @@Antti5 yes. So many comments - I think I answered that to another response already. But I agree about the durability if the cassette. I could splash a lot on an AX 25mm deep wheelset with Extralite SP hubs. But it was fun experimenting with a few DIY efforts that continued to shave weight and didn't really cost anything :)

    • @DrJRMCFC
      @DrJRMCFC 5 лет назад +2

      Those recon blocks suck. But that’s no the point with this bike. i have the saddle on my bike. It’s awesome and causes no discomfort on 6-8 hr mountain slogs. I would ditch the stem purely from an aesthetic perspective (for the THM one) and the lever hoods. I would swap out the pedals to for something with a platform. Purely personal preferences. Great build and interesting vid.

    • @Antti5
      @Antti5 5 лет назад

      @@DrJRMCFC I have no doubt that the AX Lightness saddle can be very comfortable. I''ve been running the sub-90g Tune Komm-Vor+ on my road bikes for many years now. Yes it's light, but most importantly BY FAR the most comfortable saddle I've ever ridden. I never had any comfort issues, and some of my rides are 10+ hours. If they ever stop making them I'll buy a dozen just in case.
      The shape is just right for me, and due to the lightweight construction it's actually very flexible and absorbs bumps well. There's absolutely no reason why it would need any padding. I do have one with leather finish on my titanium bike, but just because it fits the aesthetics better.

  • @kakarot2430
    @kakarot2430 5 лет назад +85

    Building a bike like this required 2 things :
    1. High paying job.
    2. No families to feed.

    • @whssy
      @whssy 4 года назад +6

      You forgot OCD.

  • @caseyalanjones
    @caseyalanjones 4 года назад +3

    Steve turned out way calmer than I imagined him.

  • @thelonesculler
    @thelonesculler 4 года назад +171

    "So how much of this bike is carbon?"
    "Yes"

  • @chrisblockz3337
    @chrisblockz3337 5 лет назад +38

    Imagine doing a wheelie on that bike and the wind is super strong

  • @fredericopereira6444
    @fredericopereira6444 3 года назад +1

    My bike weights around 10kg and I love it.
    I weight 76kg which is rather heavy.
    I want a 4.28kg bike as well but I don't think I can afford it.
    Instead of going into crippling debt to buy a light bike could I just lose those 5.5kg and hope for the same result?
    Probably not, but I wanted a more technical answer.
    Thanks.

  • @alantaylor6691
    @alantaylor6691 5 лет назад +20

    It must feel amazing to ride, for me an 8kg bike feels incredible to ride due to the lightness. I can only imagine 4.28 kg would feel like riding the wind.

    • @leehazlewoodism
      @leehazlewoodism 2 года назад +2

      I have a 4.5kg bike - based around the same frame as this. Best not go no-handed in a crosswind!
      I've also got a 7.8kg bike which feels like a steamroller by comparison.

  • @nafrasheed5110
    @nafrasheed5110 5 лет назад +55

    I mean it would pretty cool to see someone acatully ride the thing , but whatevrr

    • @fedoresko
      @fedoresko 4 года назад +1

      You could definitely ride it around the house. But... Would the bike survive that ride? )

  • @rhaymargamier3896
    @rhaymargamier3896 Год назад

    I am late to watch this but still amazed by the features it has to offer.. Wow

  • @lux-3001
    @lux-3001 5 лет назад +5

    I enjoyed reading through some of the butt-hurt comments of envious people... I don't care about light weight builds personally, but chapeau for the nice build Steve!

  • @Kaergaard
    @Kaergaard 5 лет назад +6

    '...and the skewers, well they are made of lead, no only kidding' HAHAHAHA!

  • @ehudkirsh766
    @ehudkirsh766 Год назад +1

    0:35 - perfect joke with the fly 😁👍

  • @tworandy
    @tworandy 5 лет назад +6

    That's an awesome bike build. Well done Steve!

  • @llandor
    @llandor 5 лет назад +151

    And here I'm trying to keep my new bike under 8kg...

    • @chickenlittle567
      @chickenlittle567 5 лет назад +7

      llandor replace the front wheel with something smaller ;)

    • @BluTrollPro
      @BluTrollPro 5 лет назад +7

      Yup, considering a new set of wheels to put mine under 12kg.

    • @SonjaTheDork
      @SonjaTheDork 5 лет назад +2

      Both my event bike and my commuter sit right around 9.5kg, though the commuter has got to be closer to 10 now with the lighting setup and the excessive use of reflective tape. I'm hoping to cut down weight on my event bike but money is always an issue

    • @BluTrollPro
      @BluTrollPro 5 лет назад +4

      @@SonjaTheDork My commuter is a gravel bike, alu frame, steel and alu forks, cheap unbranded wheels. Have never weighed it with my lights and bottles but I'm a hair over 12kg with pedals. £500, eats up the low quality tracks I ride into the city, does its jobs perfectly (Voodoo Nakisi) My 'nice' bike is just under 0.5kg heavier, but it is a fully suspended mountainbike. :D
      I should probably buy myself an actual dedicated road bike at some point lol.

    • @SonjaTheDork
      @SonjaTheDork 5 лет назад +1

      CAElite || I'd like to get myself a gravel bike myself for commuting, or at least something that can handle a bit of snow and slush. My current commuter is a Trek 1.2 road bike that I used to use for events but I started to use it to commute to save money on gas. My event bike is an '04 Trek 1200 fitted with an older Shimano 105 groupset. Not the pinnacle of road bike technology, but it just feels great and faster than the 1.2

  • @leemurden8476
    @leemurden8476 3 года назад

    look at his little face going through the numbers.... love it

  • @jerrygundecker743
    @jerrygundecker743 5 лет назад +19

    I'm waiting for someone to make a bike out of dark matter.
    Soon after, they'll make an E-bike that runs on dark energy.

  • @Lukabakua
    @Lukabakua 4 года назад +11

    Watching this as a mtb rider i get more mud on my frame than this bike weights

  • @harsdensus88
    @harsdensus88 5 лет назад +8

    Whoa that insane built steve! I like it. Now i feel my bike like a concrete now.

  • @YovaniCarrillo
    @YovaniCarrillo 5 лет назад +586

    Oh come on!! At least let someone ride the bike, almost 9 minutes of my life and you didn't even ride the damn thing. 😤

    • @chasemrl3522
      @chasemrl3522 5 лет назад +2

      Yovani Carrillo Fr Fr

    • @fab9727
      @fab9727 4 года назад +2

      That were my thoughts. Does it even ride?! :D

    • @mightyTillus
      @mightyTillus 4 года назад +1

      @@fab9727 For a short time it will. But carbon and aluminium chainwheels will be worn after a couple hundreds of kilometers.

    • @anzari670
      @anzari670 4 года назад

      en.m.wikipedia.org/wiki/Malayalam
      Malayalam - Wikipedia

  • @charlieangkor8649
    @charlieangkor8649 3 года назад +1

    If you have a long hallway with shiny tiles you can remove the tyres completely and ride directly on the rims.

  • @muhammaddanielhaziqnorhish9937
    @muhammaddanielhaziqnorhish9937 5 лет назад +38

    That bike is lighter than my history textbook...

    • @Zozo806
      @Zozo806 5 лет назад +1

      Still more heavy as the history book of the state of Palestin

    • @NSH_2814
      @NSH_2814 5 лет назад +1

      @@Zozo806 *Israel

    • @justajun3554
      @justajun3554 5 лет назад

      Nice

  • @FlyWithMe_666
    @FlyWithMe_666 5 лет назад +9

    Awesome, this allows me to have 4-5 more beers than usual before my bike rides and still roll with the same weight. Worth the investment in my view. 🍺

  • @chefaero
    @chefaero 3 года назад +1

    Alright thanks for the idea! Will remove my saddle, remove also the left STi, and cut the drop bar a lil bit, hmmm also will remove right SPD pedal. Imagine how light my roadie would be!! Im fckin excited!!!!

  • @charlesmeadows6869
    @charlesmeadows6869 5 лет назад +8

    "Oh and did we mention that Steve's also filled the inner tubes with helium"?

  • @georgeismailov8275
    @georgeismailov8275 5 лет назад +37

    Prisoner: Hey man...so what are you locked up for..
    Me: oh. I just but an illegal 4 kilogram bike.

    • @nicholascash7002
      @nicholascash7002 5 лет назад +1

      george ismailov it’s illegal under uci regulations. He could never race it. It has to be like 14 pounds (6.3ish kilos)

    • @georgeismailov8275
      @georgeismailov8275 5 лет назад +1

      @@nicholascash7002 ah you know what i mean..

    • @bugybulldog8143
      @bugybulldog8143 5 лет назад +1

      I just but?

    • @ME0WMERE
      @ME0WMERE 5 лет назад +5

      @@nicholascash7002 the UCI weight limit is exactly 6.8 kilograms. The UCI is metric, NOT imperial.

    • @nicholascash7002
      @nicholascash7002 5 лет назад +1

      MinecraftCalzone yeah I know. It was just an estimate based on what I remember from racing. I had friends have to strap rolls of quarters on their bikes to make them legal

  • @davemacmurchie6982
    @davemacmurchie6982 3 года назад

    Words just can't express how exciting this isn't.

  • @VelidAgovic
    @VelidAgovic 5 лет назад +89

    Make it a single speed and remove hand brakes to gain some more weight reduction?? :)

    • @iamf6641
      @iamf6641 5 лет назад +8

      it cant handle alloy cogs andbthe fixed gear stress it will break off

    • @MrAyley7
      @MrAyley7 4 года назад +3

      paper weight fixed gear, interesting

    • @prabhanieliyanage6860
      @prabhanieliyanage6860 4 года назад +1

      Yes plz
      Who else only has fixies

    • @liana.chawngthu
      @liana.chawngthu 3 года назад

      I think fixies should be banned, imagine a supra driving around with no brakes

    • @magnusfox777
      @magnusfox777 3 года назад +2

      Agreed.
      To us fixie riders all those cables, gears and derailers look awful.

  • @Latexlaila
    @Latexlaila 5 лет назад +138

    Weight loss is poor mans superbike

    • @Amatronix999
      @Amatronix999 5 лет назад +13

      you could buy a real superbike for the price of this

    • @fredjohnson4779
      @fredjohnson4779 5 лет назад +4

      Yeah, this thing is crazy expensive. All these parts are ultra expensive and niche. (Other than SRAM Red)

    • @GraveUypo
      @GraveUypo 5 лет назад +1

      @Mr Brightside but, the more exercise you get per km, the more limited your range, and lower range means more limited routes and boring scenery. unless you're doing laps, then that doesn't matter. i'm fine with my bike and it weighs like 12kg or something. it's a 30 year old aluminium frame bike.

    • @GraveUypo
      @GraveUypo 5 лет назад

      @Mr Brightside nah you had a point. i'm just nitpicking.

  • @yakitorisamurai3583
    @yakitorisamurai3583 2 года назад

    This dude just preempted that there will no longer be a new GoT book lmao.

  • @AlessandroCussino
    @AlessandroCussino 5 лет назад +31

    That's nothing compared to my 4.28 tons Mountain Bike.
    X-D

  • @Flyeso
    @Flyeso 5 лет назад +87

    You didn't ask about the pedals!

    • @gcntech
      @gcntech  5 лет назад +21

      Doh!

    • @lightweightbikes2022
      @lightweightbikes2022 5 лет назад +2

      I have Aerolites . Nothing fancy . Just a plastic tube over a metal axle with zero float and no bearings . Hence why i removed mine

  • @detroitboy65
    @detroitboy65 3 года назад

    All I see here are many parts which are destined to break catastrophically. Take my word for it as I have been a pro bike mechanic fro 20 years. I have sagged so many organized rides where the most expensive, lightest bikes become the newest paper weights.

  • @madeinuk68
    @madeinuk68 5 лет назад +70

    Make the whole bike air tight,and replace the air inside it with helium,and I wonder if it could do what the bmx bikes did in ET.

    • @Freak001100
      @Freak001100 5 лет назад +6

      Stayshtum68 i think hydrogen is lighter than helium... they should put hydrogen in there haha

    • @isaackarjala7916
      @isaackarjala7916 5 лет назад

      @@Freak001100 depends on the isotopes, H³ would be about twice as dense (assuming pressure and temperature stays the same) as He³

    • @Freak001100
      @Freak001100 5 лет назад

      Isaac Karjala yeah but i mean H2

    • @isaackarjala7916
      @isaackarjala7916 5 лет назад

      @@Freak001100 H²[2] would be roughly the same density as He⁴

    • @MattTrevett
      @MattTrevett 5 лет назад +16

      Might as well leave a vacuum inside.

  • @BlueL1n3
    @BlueL1n3 5 лет назад +6

    "seemingly no stone has been left unturned in the pursuit of making it lighter..." but didn't you just say he could have opted for a lighter saddle? 😂

  • @raunefare
    @raunefare 4 года назад +2

    The biggest differences for me. going from a aluminium bike to a carbon bike Was the stiffness of the frame. Not the 4kg. It was lighter

  • @Ecrireenfrancais
    @Ecrireenfrancais 5 лет назад +8

    Great bike but is it solid or stable not sure ? But who ever says ride up grade don't ride upgrades ,don't understand that a light bike is bike that we want to ride more ,to push it to it's limit (and our limits too).
    This bike is priceless but as fan of cycling technologies this bike is fantastic.
    Geek of cycling technologies :D !

    • @RedlinerSeven
      @RedlinerSeven 5 лет назад +1

      Uh...Eddy Merckx said that. He's basically the GOAT of Cycling, lol.

    • @Ecrireenfrancais
      @Ecrireenfrancais 5 лет назад

      @@RedlinerSeven the goat who has a cycling brand on the world tour (and will use the latest upgrades.) ;).

  • @danvincent999
    @danvincent999 5 лет назад +11

    If that was a fixie bike, would be much lighter. But considering its a road bike, wow! Amazing!

  • @HappyPup
    @HappyPup 5 лет назад +26

    I can undo this with one Sunday lunch meal

  • @tonytober
    @tonytober 5 лет назад +5

    Lightweight was the only concern here fortunately... Total win for that. But aluminum and carbon fiber for high stress, friction and wearing parts, ouff.

  • @brucelee3853
    @brucelee3853 4 года назад

    Remove the STI covers completely and bar tape, saw off the drops, remove front derailleur, single chainring in front, remove bottle cages, remove no longer required front STI lever for front mech, remove brake that works from the STI lever you removed, drill any material you can put holes in, That'll save some more weight.

  • @Nothing-kz9pj
    @Nothing-kz9pj 5 лет назад +181

    So you did everything except ride the bike -. -

    • @gewizz2
      @gewizz2 5 лет назад +7

      we should appreciate that he picked it up for us with 1 finger

  • @BardoCrow
    @BardoCrow 5 лет назад +4

    - It's so sweet, look, there is even a bee landet on it!
    - It's a fly. -____-
    - Oh sh*t....
    - Exactly.

    • @Nidiaundjoerg
      @Nidiaundjoerg 4 года назад

      Interesting! So many bad comments, although everyone watched the video. I think it is pretty cool to see whats makeable!

  • @markvincentcocjin
    @markvincentcocjin 4 года назад

    Not shown in the video, the rider loaded up his water bottles with... you've guessed it! Water vapor.

  • @nullvoid413
    @nullvoid413 5 лет назад +26

    Bike: weight's 4.28 kg
    Owner: I'm too heavy to ride it

    • @udmbfckx2916
      @udmbfckx2916 4 года назад +1

      Owner: I need to lose 10 kg (or about 2 bikes worth)

  • @nekomeido
    @nekomeido 4 года назад +5

    Imagine just seeing you friend measure weight on his bike while you slap new 2.3 thick tyres on your bike.

  • @johndoe-bw6pj
    @johndoe-bw6pj 3 года назад

    Plot twist: Steve does not even ride bikes. He actually hates them. He just made this to piss everyone off.

  • @RKuubik
    @RKuubik 5 лет назад +77

    Almost deserves a 'supernice', if it wasn't for that stem. No offence, just IMHO.

  • @nilsjanssen8784
    @nilsjanssen8784 5 лет назад +24

    would the bike be lighter if you would pump the tires up with helium??🤔

    • @mltamarlin
      @mltamarlin 5 лет назад

      You'd save at least 20g or so!

    • @gdfggggg
      @gdfggggg 5 лет назад

      True dat

    • @jamiealford638
      @jamiealford638 5 лет назад

      no helium is more dense it will make up for the weight if not add weight

    • @andypughtube
      @andypughtube 5 лет назад +2

      Yes. Air is mainly nitrogen and by my calculations there is 8g of air in each tyre. Repacing it with Helium mean 1g of gas in each tyre, for a total saving of 14g.
      Filling the frame with He would also help, but rather less as the frame isn't pressurised.
      Adding He anywhere else won't help, if you add helium you add mass. It only helos if you _replace_ something with an equal volume of helium.

    • @jamesallen4447
      @jamesallen4447 5 лет назад

      nils janssen That's an interesting idea and imagine putting a thin storage area throughout the entire bike negating its weight completely. A 1 gram bike.