Very interesting but would have liked to have seen the finished result.

@AnnaOnTheBike

Жыл бұрын

Sorry guys, it had to cure for 24hrs and then get sanded the next day! It’s totally smooth and seemless now though. You can catch a glimpse of it in my next video where I re-spray it myself at home… sorry for the cliffhanger 😂

@jackpearson8116

Жыл бұрын

I work in a bike shop and have sent lots of carbon frames to get fixed and after piant they look band new

@sixtring73

Жыл бұрын

@@AnnaOnTheBike Thanks Anna!

@smashyrashy

Жыл бұрын

Typical gmbn

@LUk355

Жыл бұрын

That Gritzl frame must be less then year old. Why did you go for carbon repair instead of using the Canyon's crash replacement programme, Anna? As stated in the video, you are loosing warranty when doing unauthorized carbon repairs.

Personally, I avoid carbon frames 10% because every time a sharp rock bang hard into my frame I imagine it cracking oopen a carbon one, and 90% because I don't think they're worth the premium. Sure, if you're racing (and serious about it), then by all means take every advantage you can. But for hobbyist riders just looking for fun and a healthy sport, I feel like it's money thrown out of the window that could've went into better components. If money is not a problem, whatever suits you, but I think the hobby is already overly expensive to worry about grams on non-competitive riding.

@StefanJovanovski

Жыл бұрын

I'm with you mate. I'd rather invest in top of the line suspension and brake components and feel comfortable on my aluminium frame.

@KrazyKrzysztof

7 ай бұрын

Yea this is my logic to get another aluminum bike. On my first road bike I got hit about 2-3 times, my bike fell a few times as I flew off, sometimes it just fell because I didn't fully learn how to release my shoes. I also ran right into a massive ebike dude because he stopped in the middle to make a turn. There is no way a carbon would have survived all of this new york city madness.

Definitely would like to see the results and maybe the story of how you caused the damage.

@gmbntech

Жыл бұрын

This bike will feature in a future video, so keep your eyes peeled! 👀

My cracked frame been repaired once a couple years ago , repaired part still stiff and durable, I'm using my bike as usual with no limits. Good job

@gmbntech

Жыл бұрын

Thanks for sharing! It's great to hear that so many people have had really positive experiences with carbon repairs. 👍

Aluminum frame with carbon components is the way am going with my new build. I don't want "what if it cracks" at the back of my mind every time I ride. Great insight Anna. Thanks

@frankthetankricard

Жыл бұрын

That's an interesting approach. I'd rather take a carbon frame with alloy components any day. I've rarely seen carbon frames snap due to hard riding (without a crash) but it's not terribly uncommon with handlebars and cranks . And don't even get me started on rims. They are great until you hit a square edge. Not the level of reliability I'm looking for. Probably great for the average cross country rider but not always the best for gravity riding.

@burningatthetrailhead

Жыл бұрын

Aluminum snaps just as violently. I'm missing teeth because my norco charger snapped. I also folded my specialized p3 at the top tube and split the downtube weld. Gave myself a dirty scorpion and whiplash that time.

@rottieshepcalibre9156

Жыл бұрын

@@burningatthetrailhead ouch! Sounds painful. Thanks for your insight 👍🏾

@Rodolfowei12345

Жыл бұрын

Nah i would go 100% alu, or carbon frame alu components, after speaking with a lot of bike shops carbon components make no sense, just wheels...the other components usually snap...

@NiohNiohYT

Жыл бұрын

Umm aluminium cracks *much* easier than carbon tho, and is much less repairable, so no clue what you are talking about?

The point is, what makes the damage in the first place. A dropped chain, a flying pebble, or just the bike falling over most likely won't damage an aluminum frame. Yes, you can repair carbon, but aluminum or steel doesn't need repairing from small things. Still not convinced, i'd rather have a bit heavier and long lasting frame, than being afraid that an unnoticed damage can cause my bike break in half.

That is great. Although you should have mentioned the cost of the repair and the accessibility because for example, I could not find any shop like this in my country.

This isn’t selling me on a carbon frame at all.

What did it cost? And what did the final fixed frame look like?

Really cool seeing how carbon is repaired to keep them going and seeing BBR at work. I want to get respray on my Stanton from them soon! Could you do similar content for other frame materials too?

You can delaminate it without it being visible. On a mine hunting ship i was on in the navy made from glass fiber there was a regular service after x amount of years in use where there was a guy with a tiny hammer that checked every few centimeter of the ship by lightly tapping the hull with the hammer and if there was a hollow sound it was delaminated. Typically at the bottom of stairs and ladders and other areas that regularly got impacts was delaminated and needed to be repaired.

I've used a variety of carbon fibre products to make a gravel bamboo bike in my garage - carbon fibre is much easier than people think, to work with. I'd certainly be happy doing carbon repair work to my own frame, however, other than the bamboo/carbon frame I ride a steel road bike, titanium fatbike and alloy full sus.... It isn't the strength that worries me - it's the cost 😜

@khalilbiscuolla5829

2 ай бұрын

Hello, bro! Hope u doing well. Just got my first carbon road frame, and still insecure about the resistance of the material. So, just to gather someone else’s opinion… would go all carbon considering the material resistance? Just had a lil crash couple days ago, but nothing too serious- a lil 8yo girl just crossed the street w her bike and caught me by surprise-, and visually, nothing seemed to happened. I would appreciate to hear ur thoughts. Ty for yr time! All the best

The problem is not repairability itself, but the reliability on a crash. Even on XC level which is not hash riding, over the years I've seen several cracked carbon frames and no aluminum frame so far. The only aluminum frame I saw die was my old full suspension AL frame, which was ht by a motorcycle who skipped a stop sign and hit me by the side, destroying the rear triangle, but then again, yeah I don't see a carbon frame surviving that either, lol It's great carbon can be repaired, but at least in my country it's not a cheap repair and due to demand can take weeks without riding, or even while you save for the repair 😅and considering cracking can happen a few times in the component's lifetime, not an easy pill to swallow for many people just to save some grams when your belly has some extra kilograms 😀

@smokefentanyl

Жыл бұрын

Exactly

@tibbar1000

Жыл бұрын

Great reply! Outside of serious competition, it is hard to justify sacrificing any reliability for the weight and/or stiffness gains.For perspective I should add that I am an old person who just doesn’t want the bike to leave me stranded.

@Gabesafish

Жыл бұрын

Aluminum frames can and do fail. Usually the failure mode is a cracked weld which cannot be reliably/safely repaired as the whole frame would need to be stripped of paint and then heat treated in an autoclave.

@Asthbendriel

Жыл бұрын

@@Gabesafish probably the only material that won't experience a failure point for bikes is titanium, but that is probably out of the question. Putting that aside, that does not deny the original point, aluminum is more durable than carbon, needs more stress to reach a failure point, and once reached that point is cheaper to replace and such replacement will last longer.

@smokefentanyl

Жыл бұрын

Maybe a really good TIG weld might last awhile if braced with an excessive amount of material or gussets.. such as sliding a tube with the I.D. that is the same as the O.D. of the parent material , over the crack or damage after it’s been welded, and then welding around both ends of the “brace”.. but even then it will likely break.

will there be a follow up vid showing the finished repair?

Lots of great points, does it not require a post cure bake to get the best out of the resin? Also was it electric tape used for consolidation? Wouldn't the stretch in that reduce strength and increase weight?

Aluminum is cheaper and recyclable . That’s my main reason for switch

@gollz365

Жыл бұрын

Carbon is also becoming more recyclable.. slowly, but its getting there

Carbon: "chain falls off, needs repair" , Aluminium: "chain falls off, get the crowbar, we need to get the chain out" :))

Could you make a video about how we could decide between similar carbon fiber bikes from different brands? My guess is they all use the carbon fibers differently (eg the direction of the carbon fiber sheets); so how can we tell which are better quality or better in some aspects than others?

Really interesting process and techniques, always great to learn about the products and the bike industry as a whole, please also pop to Argos bikes in Bristol and see what can be done with Steel, Alloy and Ti bikes in terms of repairs and refurbishments

Honest guy, this repair man. He is very honest with you, Anna.

All sounds decent , however the cost pay for the carbon repair, and then a re spray would total a lot? Plus time assembling your bike back together.

@AnnaOnTheBike

Жыл бұрын

It depends on the crack and the paint depends on what you need, but it’s likely to be less than a new frame!

@SAMUELSUTTON7

Жыл бұрын

@@AnnaOnTheBike that’s possible true. Look after your bike, and your bike will look after you . Hopefully.

@stefromfortworth

Жыл бұрын

A mate of mine for a quote for repairing a crack in his Cannondale frame. £800 without any paint work repairs. Wasn’t even crash damaged either, just a crack in the yoke between the two chainstays. No thanks!

@AnnaOnTheBike

Жыл бұрын

@@stefromfortworth firstly, I’d say shop around on price, but if that’s the cost of a difficult repair, it’s still cheaper than a new frame! 🤷‍♀️

@stefromfortworth

Жыл бұрын

@@AnnaOnTheBike You could, but you’d be lucky to find more than one carbon repairer within a hundred miles of your home, so you’re kind of stuck with whatever price they ask for. And it’s still bound to be a laborious process so will be eye-wateringly expensive regardless. What was the cost of your repair, out of interest? If you did pay? Might be cheaper than a new frame but who in the real world has £800 lying around just in case a frame breaks? Welding is a fraction of the cost and far more tried and tested than even this repairer’s methods! Sorry but Carbon is just destined for landfill. I can understand it for racers and maybe you GMBN guys who change their bikes more often than socks…. But I want a bike that doesn’t 💩 the bed after a few rock strikes 😂 Steel or Ally all day!!

In rowing it's quite common to repair broken carbon oars and sometimes even hulls. Specially racing oars have to withstand an impressive amount of force, and if well repaired, difference (if any) is unnoticeable.

I like this channel more than the rest of gmbn's 🙃 love ya doddy

@gmbntech

Жыл бұрын

Thanks, Patryk! Tech is always the best! 😉

As far as wrapping with tape I would use heat srink tape this will compress the repair much better and hopefully force the resin futher into the crack aswell

@David-qx8jm

Жыл бұрын

You might have come up with a great idea. I have used the heat shrink products and they work well To water proof hotrod wiring. And it pulls down real tight conforming perfectly with the surface. However getting it in place without cutting and basically ruining its drow down capabilities and rendering it useless. May be a challenge.

@TimSikma

Жыл бұрын

@@David-qx8jm heat shrink tape is a plastic wrapping tape that you wrap on like he did with the electrical tape (electrical tape is something a home repairer does rather than a professional) and heat with a heat gun to shrink and squeeze out as much epoxy as possible to make the repair stronger. I think you are thinking of electric heat shrink tubing which is more rubbery and would be hard to put on like you said.

@evangatehouse5650

3 ай бұрын

Yes heat shrink tape is the proper way to do it, not just electrical tape. No, not the same product as heat shrink tubing

It's not the snapping part that's scarry. It's the spitting your teeth out and the dentist bill after. I've snapped and folded aluminum frames, forks and cranks. I smashed out three teeth and had road rash from mouth too knees. I was wearing a helmet every time

@miseriadocao

Жыл бұрын

Exactly.

why would I get a frame that needs to be repaired every time it gets a little scratch

Aluminum and steel frames with carbon kit that's me.If its cracked bin it, not trusting my life on someone else's repair. Thank you-:)

@MrSupermugen

Жыл бұрын

Otherway around for me, Broken off headtubes of alloys and smashed downtubes. no thanks. carbon only

I'm guessig this repair is doable for dh or enduro bikes as well, where the stress on the frame is high.

Carbon comes with a 'saw it on gcn/gmbn therefore i must keep up' price tag attached to it sadly.

@theonemanopinion2764

Жыл бұрын

Or ride both and then make blanket statements. I could blind folded (well sensibly) ride any bike and tell you if it’s carbon or aluminium every single time.

I guess one question is what happens if you come to sell a frame on which has had a crack or a repair? Presume that even with a repair done, the frame would be worth significantly less, you'd have to declare it to the buyer and there is never any guarantee that the repair might last for years given that he only offers a 12 month warranty. At least with Aluminium, the frames are usually quite a bit cheaper to replace in their entirity and more easily recycled when damaged.

Sorry not convinced, but in as much as some bike frames only come in carbon, then what choice do I have? This video does give me some confidence that for my high level of careful riding, with infrequent falls, and not bad ones, Carbon might be OK. Thanks. It is just a shame that I can’t get my frame of choice in steel, but the extra 2 lbs it would cost might still result in a weaker (albeit more compliant) frame. Least I do not need to worry about rust.

Could you do a follow-up on this video so we can see the and result please?

@gmbntech

Жыл бұрын

Hey David! This bike will feature in a coming video. Stay tuned! 👀

I are off my road bike and scuffed the handlebar at the plug and discovered the crack at the head tube of the frame, repaired by Magnafibre in Alva near Alloa £100

Interesting being Gmbn are there bike shops in South Africa 🇿🇦 that repairs carbon

You can also repair alloy frames with carbon with a glass under layer

If in buying carbon I'm owning the cons. And because im not in a place where i can own the cone I'm buying steel bikes. I'll take the weight penalty for repairability

I'm not convinced by that repair, seems like a high tech plaster/ band aid with some resin seeping into the crack, what about cracks that are deeper or almost totally cracked, why didn't we see the finished article or get a rough estimate of cost. This video leaves more questions than answers. I'll stick with alloy frames, I've ridden frames with small dents in the downtube and toptube, couldn't do that with carbon.

It will all depend if you live somewhere with carbon repair experts close to you, because on some countries once you crack it, it's goodbye.

I have broken two aluminium frames... all my bikes are titanium now. Carbon just looks so worn after a few months....

For what that repair cost (labor intensive) i could buy a replacement aluminum frame and do it all myself and not miss a minute of riding time. But i guess if you got the big bucks and loads of time go for it. Great job. Your like a new bike. Does a great job all while being easy on the eyes. Dont stop now keepemcoming.

@alf3071

Жыл бұрын

for real man

@David-qx8jm

Жыл бұрын

@@alf3071 "for real dude"

@theonemanopinion2764

Жыл бұрын

You can do this type of repair at home for $20.. the type of people that pay to get this done are the same people that take a bike to a bike shop and pay to have brakes bled. People who don’t learn basic skills to maintain or fix a bike spend way more on bikes than a savvy willing mechanic will over a life time

@gollz365

Жыл бұрын

@@theonemanopinion2764 Because safe and effective carbon repair is a common skill that many people learn to do at home right? 😂 Not saying you can't, but its not quite the same as basic bike maintenance, especially if you want it to look as good as new once done.

@out_spocken

6 ай бұрын

to be fair...there's a significant difference in skill and risk in bleeding brakes and carbon repair. I get your point....but I'm someone that does everything I can myself, including truing wheels...and I'm currently hestiant about fucking up a repair to my rear stay that has I think only paint cracked but could be carbon with a carbon repair. It's simply the risk involed if you do it wrong. Stuff up bleeding your brakes...just do it again. And you'll know if they are working or not once done. Stuff up the carbon repair...you might not know till you are falling off a shattered frame.@@theonemanopinion2764

Finished product???

Still For everyday rider. Alloy is better, cheaper and most of all practical than Carbon.

Well, why didn't they show what happened? ((

@gmbntech

Жыл бұрын

Hi! The frame had to cure for 24hrs and be sanded down the next day. Stay tuned for when this bike features in Anna's next video.

@Danil-Crypto

Жыл бұрын

@@gmbntech tnks)

On a mostly road-going MTB, carbon may be okay, but if I plan on going XC, I'll go aluminium. Also, I'm on a budget.

@Jacob99174

Жыл бұрын

If you can, rent a carbon XC for XC’ing. I own one, it’s wonderful!

Would get the crash repair frame

This won't work, because the tape is not blue 😂 Jast a joke! Thanks for cool video🤘🏻

@JohnDir-xw3hf

Жыл бұрын

Russian joke?

I love the sound of carbon frames exploding in the morning..

Is there any reason why you cannot tig weld a aluminium bike frame? Which would mean it is repairable. Because I guarantee I could weld a bike frame together 👍

When are we seeing the finishing and final results???? Would have thought they would have vac bagged it to reduce any air pockets or voids.

How much would a repair like this cost?

What! Where's the other half of the video?

The video was edited too short - we didn't see the end result!!!

What I don´t like about the aluminum to carbon comparison is the fact that often high end carbon frames are compared to low - mid range aluminum frames making it an apple to pears comparison. If you buy a high end aluminum frame like a Nicolai for example I bet you, this thing will be sturdy as hell and never be in need of a repair for the total product lifespan. On the other hand, an entry level carbon frame might be repairable and all, yet it would be financially insane to do so. And when we are completely honest, 90% (not a real number, based only on personal experience) of riders will go for an entry level to mid range carbon bike anyways. So yeah, while you have to live with dents in your aluminum frame, a cracked entry level carbon frame will never ever see a repair once it is damaged anyways and will certainly be thrown away and end up in a landfill as nobody really knows how to recycle this material properly and never be ridden again. So I stay with the analysis, that for the majority of non-professionals, aluminum is the better choice. Weight savings for most riders are always stupid as long as their riding is not competitive.

I don't understand why people say aluminum is not repairable yes it requires that the frame be stress relieved after welding but that's a specialized process that can be done way more places than carbon can be repaired.

@simonm1447

Жыл бұрын

With 7005 you can even harden the weld by storing the bike for a couple of months

No carbon for me.

Meanwhile there's me, I own 2 carbon wheel sets 💪🏻🤣🔝

Sure carbon is repairable but at at the same time you can damage your frame by installing the mud guard the wrong way or overtightening a screw. I don't mean to hate but for me mtb and having to look out for every tiny detail to not damage your frame don't belong together.

I fix my 'Lumi frame w/a bottle of nail polish 😂

Yes like this video,

@gmbntech

Жыл бұрын

Thanks for the support! 👍

Carbons really pricey in ph though 😔

It would be more interesting, if they would have used cute carbon repairer nanobots.

It is good to know it is repairable but I can’t trust any carbon frame repaired for downhill or enduro sessions. I’ve been riding aluminium frames for decades but I think I’ll go back to steal frames. There are boutique frame companies here in uk or anywhere in Europe but they are expensive at the moment for my budget. Best looking one is starling bikes sturn v2. For me it is top notch.

it's way easier to find somebody with a MIG welder that can weld an aluminium frame than it is to find somebody that can fix carbon fiber. Plus I'd rather have a frame that won't break than a frame that breaks but is "easier" to repair

@Pienimusta

Жыл бұрын

Tell me what is your unbreakable frame? So many alu frames snap, especially on the welds.

@petesmitt

Жыл бұрын

@@Pienimusta I've got a 90's steel frame I've done my best to break.. I think only rust will weaken it.

@conan257

Жыл бұрын

Welding aluminium removes the temper applied to the frame, so welding a crack is likely to make the overall frame weaker

@krzysiu4003

Жыл бұрын

Would definitely be better to TIG weld aluminium, much more controllable. You would then need to heat treat it.

@strider7008

Жыл бұрын

Tig not mig

Follow up with the result please

Can anyone site an instance where a well done repair failed? The "crash it trash it" mentality has some validity, but maybe it's a little too conservative especially for the crowd who cannot just drop another wad of cash on another frame. It would be cool if a youtuber did long term crack test.

love this chick

My deal is just that I need my bikes to work for me, not vice-versa. Upfront cost of carbon is more than I can afford, plus I don't need the hassle of wondering if there is a crack in the frame that I can't see. And no knock on those who embrace carbon, especially the racers on their bikes which can be disposed after being trashed in a spill in a corner or whatever.

@theonemanopinion2764

Жыл бұрын

You can buy a full carbon bike from on one for $1200. That’s on the road, not the frame.

@robbchastain3036

Жыл бұрын

@@theonemanopinion2764 That's a deal, no question, and who knows, maybe one of these days I'll make the leap, perhaps on a bike for supported rides in case I need a ride back to the parking lot. And I suppose it is just that as a year-around commuter at age 63--and thankfully so, no boasting--I still ride with the spirit of a privateer funding my way on the circuit, gotta make some money, gotta make the next race. And I feel that literally when I am racing the clock to beat the time clock at work. And nobody knows my elation when I calmly clock in and avoid a tardy with mere moments to spare. So that's all and it is all still a big adventure and big fun and perhaps when I retire I'll get a speedy carbon gravel bike and get ready to take the checkers! Watch out, people, I'm ready to rock this carbon boat. 😀

~Tyre rubs on seat tube and seat stay~ Carbon frame: ermagherd RIP Alum frame: lol 😁

@richardbeto1615

Жыл бұрын

😂😂😂

@rupedog

Жыл бұрын

Aluminium would also rub just the same🙄

@stefromfortworth

Жыл бұрын

@@rupedog yeh but the frame would still be rideable and would take WAY longer to wear all the way through 🤣

@MrSupermugen

Жыл бұрын

@@stefromfortworth depends, alloy is quite thin in these areas, especially on MTB. then it would sheer... could kill you. carbon wont do that

@stefromfortworth

Жыл бұрын

@@MrSupermugen No you’re right, carbon would have killed you long before that point. Probably snapping after a minor rock strike.

Of course it was a canyon for this video more like crackyon lol

This video was produced by the guy who did the original Italian Job, what a ending 🤨

His voice tone changes at the end of sentences.

Why didn’t you show what it looked like afterwards?!🤔

@AnnaOnTheBike

Жыл бұрын

Sorry Steve, it takes 24hrs to cure and then it needed sanding and finishing. You can see it when I do my home re-spray job - coming soon!

@RobHill00

Жыл бұрын

@@AnnaOnTheBike cool, I was just expecting ‘24 hours later’ reveal! Great video though found it interesting to see how they do actually repair carbon!👍🏻

@stefromfortworth

Жыл бұрын

Probably because it looks like a dog’s dinner. See how long she’s actually riding it before the next “new bike day” post! Wouldn’t trust it personally.

if an alloy frame is at a level where it needs repair it is much more damaged. aluminium bends first and then cracks. carbon just cracks. no thank you. the little weight saving isnt worth my life. i ride emtb so i dont care as much about weight anyways.

yeah, that's all good if you live in a country where you have shops or places where you can fix the carbon frame, where they have that kind of technology and tools to do a good job. But if you live in smaller town where their is LITERALLY no repair shops that work with carbon what is the reason to buy carbon their?

Aluminium can be repaired, though specialist welding.

@MrSupermugen

Жыл бұрын

and then heat treated and still wont be as strong and youve now spent waaaay more aswell. modern alloy frames cant be repaired sorry.

@simonm1447

Жыл бұрын

@@MrSupermugen if it's 6061 you need a heat treatment. With 7005 you need none after welding, you just have to store the frame for a couple of months. This alloy was developed to be welded without heat treatments afterwards

£4500 for a mtb with a carbon frame and it can crack on one come off,I will keep my aluminium bike at least it can be welded

@AnnaOnTheBike

Жыл бұрын

Aluminium really isn’t something you want to weld…

@MrSupermugen

Жыл бұрын

what? lol i would go through 3-4 alloys before a carbon frame, modern alloy frames are not strong at all. Did you know the force in a strike has to be higher to damage a carbon frame than the force needed is lower for alloy? dont ride a structurally changed alloy... EVER dont ride a Welded Alloy frame EVER

@AlexandarHullRichter

Жыл бұрын

Aluminum frames are designed to be as light as possible, so they are not strong enough to ride on when they're not heat treated. If you weld an aluminum frame, you have to heat treat it again before you can ride on it.

@gollz365

Жыл бұрын

you can break an Alloy frame after one Come off, and carbon can be repaired much more reliably than Alloy... whats your point?

I find it somewhat comical that she is holding a Canyon frame while talking about this. Currently I am waiting on a full refund from Canyon for a Spectral Mullet Frame that cracked at the shock mount around it's 8th ride. Maybe it's just luck but that never happened to me with Aluminum.

@vinceking7878

Жыл бұрын

I think it's like fishing rods, there could have been a hidden/internal hairline crack that could have got bigger when you started riding. Was the bike brand new or ex demo? Only getting started trying to learn MTB skills and only ever had hardtails, though I imagine that the shock mount is a vibration and impact heavy place lol. Did you bottom it out?

@vinceking7878

Жыл бұрын

Mabey it was just a bad frame lol

@jdb567

Жыл бұрын

@@vinceking7878 Probably, it could easily just be bad luck. Yet somehow I can't see myself buying another Canyon. The worst part was their customer service was awful.

This guy really goes the extra mile for his customers, and you want to see his painting

Honestly you should probably just replace a frame if it's broken, unless it's steel which can easily be welded. I wouldn't trust a repaired alu or carbon frame.

@ibewillow

Жыл бұрын

Alloy can be welded just as easily as steel. Alloy frames are welded together, if you cant trust an alloy repair, how do you trust the original alloy welded frame?

@markjones7130

Жыл бұрын

@@ibewillow Welding shops that specialize in alum bikes recommend you replace/buy the cracked park of the bike. An alum weld repair is not as atomically strong as the weld from a factory. The factory heat treats the entire frame to balance the alum structure between a weld and alum frame.

@ibewillow

Жыл бұрын

@@markjones7130 correct, and a carbon frame cant be stress tested at all. Are we comparing the strength to an original weld or the strength of a carbon join, if youre comparing it to the latter, its going to be stronger.

Carbon repairs absolutely need to be heated during the cure cycle. The resin for impregnation doesn't pot off under 350 degrees. Without heat, you will not pull the matrix that introduces the resin into the cloth during a cure. This was a bandaid that will fail.

@markjones7130

Жыл бұрын

Not true on the heat treatment. With a carbon airplane fuselage, or the hull of a sailboat, how can you put the massive structure into a heat room. Therefore there are resins made for these applications. Check out aerospace resins and other types.

@rotorblade7363

Жыл бұрын

@@markjones7130 I've been working in aerospace for 25 years and have plenty of advanced composites training to include several courses at Abaris in Reno. Carbon repairs absolutely need to be heat cured. Anything less is a bandaid. We use a combination of heat sources that are all precisely controlled with thermocouples and specialized equipment.

@evangatehouse5650

3 ай бұрын

Aerospace is typically using prepregs that do need curing at elevated temperatures. But he was using a resin that fully cures at room temperatures. That resin is designed that way.

I would rather just stick to a metal frame and not be scared if my frame cracked after any crash. Specially when 'fixing' a carbon frame is just placing a bandaid over the crack.

@MrSupermugen

Жыл бұрын

Ive had huge crashes on carbons and theyve been fine... However ive owned a heap of alloy frames that ive Dented, cracked and even some broke the headtube off. Carbon is considerably safer to ride hands down.

@gollz365

Жыл бұрын

No its literally fully repairing it. The original crack might still be there underneath (assuming all the carbon wasnt removed) but the carbon that replaces it makes that original carbon redundant.

How did the frame get broken in the first place? Its a myth that (quality/branded) carbon frames are fragile... see the Santa Cruz video!.. and aluminium can equally be holed or crack from an impact in a direction it was not designed for

@gomerpyle7721

Жыл бұрын

I agree, frames are very strong when taking hits from forces and the direction of forces they were designed for- carbon or not.

@out_spocken

6 ай бұрын

agreed. I've had three incidents with cars...one serious...and the frame faired infinitely better than me. To the point I still ride it. Like anything, how you impact the frame is key. And as you say....aluminium or titanium or steel can fail

How can he not say that the repair is stronger than before, but say that is as stronger than…?

@gmbntech

Жыл бұрын

Hi Juan! Josh said a carbon repair can make a frame just as strong as the bike frame was before the repair. Hope this helps! 👍

Can you elaborate on why you're suggesting aluminium isn't repairable?

@janeblogs324

Жыл бұрын

You can weld it easily, but you need to heat treat it afterwards. The manufacturer knows the exact heat ramping rates to destress the welds, a business would be guessing. You will most likely warp the frame too, all the paint will melt.

@AnnaOnTheBike

Жыл бұрын

Good response from Jane there! I guess I should have said something more like “aluminium is extremely difficult to repair and not advisable ” 👍

@patrolmaverick

Жыл бұрын

Ideally aluminium frames are heat treated for optimal strength to increase their lifespan, in the same way that carbon fibre frames are cured in an oven during production. The patch repair of the carbon fibre frame in the video isn't exactly "ideal" either. It's essentially on par with not heat treating an aluminium frame, meaning that it works, but for how long.

@simonm1447

Жыл бұрын

If it's 6061 you need a heat treatment after welding. With 7005 you can just store the frame for a couple of months (age hardening). 7005 Was developed to avoid expensive heat treatments after welding.

This video just confirms WHY I don't want carbon. I don't want a super brittle bike that can crack without me noticing or break the frame because a chain came off. Carbon = overpriced trash 🗑️

I wonder if carbon haters refuse to fly on modern commercial jets made from it!

@daffydaz3329

Жыл бұрын

I know right? The composite material structures in aerospace and mountain bikes are built to exactly the same standards. Surely everyone knows this by now.

@simonm1447

Жыл бұрын

The difference is an A 350 typically don't get hits lateral to the fiber direction, while this can happen to a bicycle frame. Also aerospace grade fibers and resins are made with higher standards compared to commercial grade carbon fiber materials. Not long ago an A 380 had a tire burst at cruising altitude, it just blew away the carbon fiber panel of the wheel well beside the tire.

I've done diy repair on my cheapass chinese carbon frames. Easy if one have the patience. However, I will never buy a high end carbon frame simply knowing All carbon frames are held on by glue and flimsy cloths. I consider it as a disposable item and disposables should be economical

Carbon is repairable and Aluminum wasn't but you can get a new frame for 4000php

tell you what, broken bones arent easily repairable as well as wallets

Carbon is overrated garbage, destined for landfill. My mate got a quote to fix a crack in his carbon frame which was £800 🤡 Re-welding would be about £100 from somewhere decent. Fuck carbon. And fuck the bike industry for marketing it as the be all, end all for bikes. Steel or Ally for life 👊🏼

Could do that myself for £20. I’d never trust that.

The same damage on an alloy bike wouldn't require such a repair. By the time an alloy bike needs a repair like this, a carbon frame would be beyond safe repair.

@MrSupermugen

Жыл бұрын

so on which frame? is that on my 4th or 5th alloy before the first carbon? last few years ive ruined so many alloy frames

@AlexandarHullRichter

Жыл бұрын

That depends on a lot of things. Carbon is more easily damaged from an acute impact, like a rock hitting the frame. Carbon can also take more force overall than an aluminum frame can, like coming off a really tall jump and landing correctly. The bigger feature is overall rideability, which is why it's more of a road bike thing. Carbon frames can be ridden over much rougher roads and on much much longer rides. without fatiguing the rider, where even a brand new aluminum frame would not be tolerable after a time.

I buy aluminum because I can't afford carbon 🤣

Ok so even if I did end up going with a carbon frame since it's repairable, where the f do i find a carbon repair specialist?🤣🤣 there ain't none near me

@stefromfortworth

Жыл бұрын

Exactly! 100 miles away from you and the cost of a repair is probably half the value of your bike!

Carbon , when will you people learn !

That is not a repair, it’s just like putting a big fat cast on and leaving it there for the rest of your life! Doing something like this to a metal frame would be welding a bigger tube on the original one and call it a day. It’s nice to see that something like this seems to work put I would never trust a repair like that on a Mountainbike where you have to land after jumps. Sorry but that no good work

@AnnaOnTheBike

Жыл бұрын

It’s not like a cast, because it’s using the same material and method of original production, not slotting something loose over the top. In your analogy, it would be more like a bone graft than a cast. Just saying 😇

How did she destroy that frame?

😂 that is definitely not the way to repair carbon properly. Consolidating plys together with electrical tape 😮No NDT testing. So many joke companies out there taking the piss and charging a fortune.

@gollz365

Жыл бұрын

You can get a lot of compression with wraps of electrical tape. How else would you suggest you get a perfectly even and good compression all the way around a tube if not wrapping it tightly with electrical tape or similar materials?

@creepingjesus5106

Жыл бұрын

If you watch the slow mo carefully around @09:19 I'm pretty sure you can see the weave move up slightly under the compression from the peel ply. It may be resin washing up, but I've watched it a few times now and I'm pretty sure it's moving. Either way, I'm not convinced he's filled the base of the crack adequately: this is literally a bandage job.

@chrisbilsborrow9329

Жыл бұрын

@@gollz365 how much compression can you get in psi/bar from electrical tape? You can’t just guess. It’s a skilled job that many people have trained in for probably decades from aerospace to F1. I’m not saying this won’t hold but I would not risk riding it, if you were a good rider putting a lot of watts through the frame I’d want to trust it. A repair in vacuum bag for starters would be good.

@gollz365

Жыл бұрын

@@chrisbilsborrow9329 comfortably more than enough. I think you're underestimating the force that can be applied by tightly wrapped electrical tape. Its by easily the most efficient way to get good compression around tubing such as this.

@chrisbilsborrow9329

Жыл бұрын

@@gollz365 like i said how much force? Easy doesn't always mean the best. If your happy with that sort of repair then thats fine.

Carbon its like a strong plastic, but still Plastic. Not useful at all for normal bikers

Interesting... hope never need it!

@gmbntech

Жыл бұрын

Fingers crossed! 🤞