Has anyone considered that this bike range is just a means to generate publicity and possible increased foot traffic through specialized bike showrooms? Look at how much media coverage they have gotten for a FLAT BAR bike! I mean personally even if I didn't buy one I would certainly want to see one in person and I really would like to give it a ride to see what it felt like.
Yes but it's the wrong sort of media coverage. It's total ridicule. There is probably some smug git at Specialized HQ thinking the public is going to buy this and he's probably right but.... I don't think the public are as ill informed as they once were.
@@Hambini the public have never been more ill informed than ever before. You must remember that Joe Public has never liked to think for himself nor does he watch your RUclips channel - unfortunately :).
For my engineering degree I had to build a cantilever structure. I screwed up in one of the dimensions and it looked a lot like that bike frame. It collapsed. Lesson lerned.
Hambini’s hairdresser’s knowledge of bending moments is a direct result of the meticulous detail and attention Hambini puts into his practical demonstrations with her. Highlighly comendable 😊❤
@@trek520rider2 Considering the torque of his shaft, her compliance is admirable. As mainstream cycling media would say: ‘a great ride - begs you to go faster’.
Beat me to it! Had a video for this. 1. Get your grad to do your CAD next time 😂 2. The seatpost deflection will still be magnitudes more than the deflection given by this design although more fore - aft than up down. 3. The trek doesn't have a damper, have a madone here in front of me. Just an L shaped carbon leaf spring. I quite like how its packaged... 4. You can still get more comfort without a damper, in theory. An elastic collision will have a lower peak acceleration than a non elastic collision. Same mass thus, lower peak force. Its peak force that hurts your backside you taught me all about that, remember that night in the flugplatz. 4. Only benefit i can see is shorter chainstays for poppin wheelies on the way to the office. No front mech though.
I see the advantages of suspension for gravel and even road bikes. I'm convinced that in a decade or 2 they're all going to be featuring suspension at both ends. Road bikes might only have 1-3cm but they're going to have some suspension. Gravel won't take so long. I see the advantages to having a flexy frame and fork for a passive suspension. The problem with flex for passive suspension is that it flexes in every direction uncontrolled. They've figured out how to make mtb suspension eat bumps great, relatively trouble free, reasonable extra weight and pedal decently. With pivots or flex zones and shocks. It's also worth pointing out that similar designs have been tried 130 years ago and have been long forgotten about. It's also worth noting that 130 years ago bikes were designed to ride on rugged terrain due to the surfaces that they rode on were often rougher than the fire trails that people currently use suspension mtb's on.
@Peak Torque Hambini is correct, isospeed has a damper. It is listed as a spare part.
Год назад+4
no no no! I have tested it ....and I bought ...this construction makes something to the accelaration capacity----try it --I recommend ...BEFORE judging
If you want a more comfortable bike, get a suspended seatpost. You can install it on your old frame (get the diameter right, hopefully the tube is round) and you might even find a model with damping (don't really know). The seatpost does not bob when smashing the pedals and quite likely the suspension has more travel than this one. I understand the torsional stiffness is most critical in the lower tube. Suspended seatpost does not spoil this.
yep, decades-old strain studies illustrated this. They showed biggest strain in a normal bike is torsion in the downtube, followed by out-of-plane bending (side to side) in the seat tube (directly related to the tortion in the downtube). When I tuned the CF bike I made for my wife, downtube needed torsional reinforcement and DT needed stiffness added at the bottom.
@@SethJayson I vaguely remember in the early 1990's there was a design, perhaps called 'Slingshot', where the downtube had been replaced by a string or cable and there was a spring to take pulling tension. In the top tube near the seat tube there was a hinge. The torsional stiffness of that creature must have been ... interesting!
@@fergusdenoon1255 I hit potholes all the time on a carbon gravel bike. Trials bikes are carbon. Enduro bikes are carbon. CF isn't weak. If you think this is just going to fall apart, you're retarded. And commuters don't give a fuck about weight at the reinforcements. I commute on a 33lbs steel trekking bike. This fucktardistry of analyzing every bike as if it were a road race frame has long been stupid.
How many people in “37 watts on the sidewalk” crowd are willing to spend over $2k for this bike? Especially when they can buy an e-bike at a similar price point?
@An Obscure Tenet and those people are correct, the fragility of carbon fibre isn't contested hence why you'd never create a bike that puts side impact stress on a tube where all carbon fibre tubes have weakness...oh...oops
I rode one on Tuesday just to see what it was about, it feels good, it’s very comfortable, didn’t seem like it was moving too much, power transfer seems normal, it’s wacky, but it’s a nice ride feel. Go ride one, and make another video. I rode the road version, it was just over 20 pounds for a size large. The Adventure version is about 24 pounds in a large.
Goes to show you can analyze the hell out of it, and be wrong at the same time. It might not look conventional but still works just fine. Good chance A) materials exceed requirements for strength, rigidity, etc for a bike frame, and B) a major company like Specialized would design, build, and sell, something that wasn’t well tested first. Roast all you want, it still works despite your snobbery. What we need is more innovation in the market, not useless sniveling about what you don’t like……
The actual issue is about repeated torque stress on the structure causing accelerated wear. A single ride won't tell you how fast the frame will wear. And whether it will fall apart in 10 months or in 10 years.
@@christianbarnay2499 I guess I have more faith in the engineering department at one of the worlds largest and most successful bicycle manufacturers…..
@@stevekelly6544 But are you sure an engineer was involved in this design? To me it was created by a graphical designer, not an engineer. The laws of physics clearly state that this design is more fragile than the usual triangle. The success will depend on the target market. If their goal is to sell it to people who buy a new bike every other year, it only needs to hold for 2 years. When I buy a bike I want it to be functional on the long run. I am clearly not the target for this design.
Actually the forces are very small for a carbon structure and being over rigid is an issue. The primary twisting occurs from headset to crankset. Carbon has a near infinite fatigue resistance. This design will be maybe 200g heavier than a traditional design, however the vertical compliance which is only in use when you're sat down could reduce fatigue on your bum over rough surfaces significantly. For its use case as a comfortable tourer this is fine
I’m convinced it’s true. I have seen articles over the last few weeks referring to the schematics. If they can figure it out it’s unique and brilliant. It looks amazing.
Personally I think it looks fugly. I actually hate when bike companies manufacture their frames with funny shaped tubing or insert funky geo. The classic two triangles looks the best. Simple symmetry is best. I get that it may have some comfort benefits when developed but to me this looks like a horrendous contraption. 😅
They have: 'compliance junction'. Given that the bike was basically designed by the marketing department, the name probably existed _before_ the actual frame did.
Looks like someone in HQ watched good old "Pimp my ride" on MTV. So they installed rhombus frame into the rhombus frame so you'll be the top boy in da hood.
Just get a canyon leaf spring seatpost. The frame shape looks like something my 5 year old brings back from design technology at school made of cardboard and parcel tape.
Aero advantage and well proven, so the UCI banned. The org also want to 'maintain' a traditional look bike for pro level racing must have a seatpost or some affect.
@Hambini can you also comment on the expected longevity of increasing flex on this kind of frame? Seems to me that stress from flexing should kill the resin component of the carbon fiber a lot quicker.
It would be interesting to know how much compliance this actually adds (in millimeters). I suspect a lot less than is from its tyres. Also, surely there will eventually be cracking around that three node joint?
The obvious power loss from a spring without much damping is why most mountain bikes have a suspension locking mechanism. It is even used on some full suspension rigs -- despite modern dampers and geometries supposedly being very good at limiting pedal bob. This thing looks like it will just bob around by design.
Did they forget the amount of force on the Bottom bracket and the twisting force created by our legs. This force is now twisting the frame where in the past you would have a seat tube which resisted that twist. On my full suspension MTB i can already feel it, this is going to be complete wobble.
I'm really curious what this bike will pedal like, since they removed one of the most important frame peices for bottom bracket stability (in the "roll" axis to use airplane terminology).
I've always thought that carbon fibre was the ultimate material for 'product churning' - something's always the 'new improved', and even it's rubbish, there's always the next 'new improved' - you nailed it, Hambini!
Their marketing department did another experiment with Fjallraven. A weird sort of case for Kanken rucksacks for cycljng holidays. If you take one look at their experiment and one look at Ortlieb, it is obvious they don't understand anything about cycling holidays. Probably more about marketing, they made a yt film too. Andthey didn't consult Hambini's hairdresser
I work as a mechanic at a shop which carries Specialized. Got to give the new design a spin around the block a few times. It’s fine, pretty smooth ride. Noticeable flex if you get out of the saddle and sprint. Overall, it seems ok but I wonder what the longevity of these frames will be? Also, the Sirrus is not a performance bike. It’s meant for commuters and rich yuppies out for a relaxing spin on the bike path. Could they save thousands by just getting a boing boing saddle? Sure but what’s the fun in that! Now, do the Rondo version of this which is actually meant to be a performance bike!
Here's what I see. The downtube joint to rear axle joint, what is referred to as the 'spring' has a real problem. Assuming it's sturdy enough to support the loads, the problem is that this part is a fixed length. As it accepts load through the seat tube, that spring length will increase as the triangle flattens. It has no place to go. The downtube to axle distance is fixed. So where will this added length go? Sideways, It has to deflect someplace. Automotive leaf springs have a pivoting shackle mount to absorb this added length. Dual Suspension bikes have a pivot there and a shock to absorb the extra length. This is fixed. Something is gonna give way eventually.
If this is a carbon bike frame, flexing any of the members intentionally will have negative effects eventually. If it's steel, it should be fine as long as they didn't make the tubes too thin. Forget aluminum.
The seat-stays/bottom of the down tube can flex and add length, and given the repetitive angles, it's easy to imagine there being a nice amount of compliance for the sort of person who's in the market for a chill, casual bike, which this largely seems to be.
@@firesurfer But you should be able to get the compliance in steel with a conventional frame. This sort of thing was tried in steel bikes in the late 19th century. If it was worth doing we would see these bikes all around us.
For the non engineers or manufacturers of components amongst us (myself included). Does anyone seriously look at this frame/setup and not laugh at it? If I had even a tenth of Hambini's knowledge I'd be choking in constant disbelief at "compliance junction " and the sheer sight of that frame.
I can remember trek leaving isospeed out of bikes with tires as big as the sirrus because slight changes in air pressure have a greater effect than anything a frame would be contributing. Tires also allow a range of adjustment based on rider weight that is one of the missing features from the frame. Lets face it, they just want to style it like a phone or a playstation, people buy the "cool" stuff, it doesn't have to work...
This is a self suspending design, for shock absortion of high frequencies and low modulation, which means smoother rides. Not bad at all. It should be combined with a hole in the bottom so it retains seat post length adjustability.
even as an architecture student I learned relatively quickly that the triangle is the shape of choice for any type of structural element, trusses in particular
depends how it rides in the end. I can see an optimum weight range being recommended. I always tell my wife that shorter members have greater torsional stiffness but she says she prefers greater compliance. What does that mean? Help me Hambini ?
I rather have that saddle on a regular bike. Great you mention flex and rider weight, sadly that was ignored on some bikes in the past. I wish the nonsense would end.
It's a cool looking commuter bike which it is marketed as, they can work wonders with carbon fiber, tune it to work in all situations ...... after all, we just have to look at carbon handlebars, the forces that go through them, they never fail do they 🤪
This bike looks like a 90s full suspension MTB, only without the suspension part. Actually, if they just gave it a double diamond frame, it'd be a fine old man bike.
The double triangle bicycle frame must be up there with the shape of a steam iron in terms of a design they got spot on first time and there's very little that can be improved upon
That specialized could make an interesting format for rear suspension on a bike. Ignoring the lateral deflection for a mo, imagine if each ‘node’ was a pivot, with a horizontally mounted spring…
Might as well take a normal double diamond frame and slap a cane creek thudbuster on it. Stiffer, lighter and probably more comfy as well. Recent ‘innovations’ appear to be designed just to create “features”, rather than actually solving a real world problem, or to make bikes look like a Tesla.
The only good thing you can say about it is that we should be glad that it is just a lifestyle bike and it doesn't really matter. Nobody will launch 1000-watt sprints on his daily commute, smash it around corners or go out of the saddle on climbs, if it breaks, Specialized will have to replace it. Let's hope they don't dare to apply this to a road bike design.
Rumour has it that the new Roubaix will have a shock in the missing space with even thinner tubes to provide adjustable compliance, probably called Futureshock III ... LOL... GO SPECIALIZED!!!!
Bicycles come in different sizes. A general assumption can be made as to the weight of the rider with regards to frame size. From there each frame size can be tuned to a different riders weight. If specialized did this the smaller frames would be substantially lighter as the leaf spring section would have thinner wall sections. The carbon material can have dampening built into it. Rubber is a spring with a high degree of dampening built into it in comparison to an equivalent steel spring. The carbon can be designed with a higher degree of dampening than steel. But lower than rubber. They also could insert easterner inserts inside the carbon spring for dampening.
My biggest issue is that the seat and pedals will move in opposition over bumps because of the shape they have chosen. As the seat pushes down it will try to close that trapezoidal shape which will force the pedals upwards. Surely this will give an odd feeling to the rider and even potentially make the bumps "feel" worse.
Nice video and presentation. This is quite unusual design. Appears a creation of an artist wearing engineer’s hat. Ask its artist is frame was meant to be flex or not?
Mechanical engineering 5th lesson during my studies....calculation of tensions in bars/rods. this Bike design reminds me of the late 1990´s when Mongoose, Raleigh and other brands designed the frames in try and error mode; the difference is my first 26" mountain bike was a "light-weight steel version" of 15 kg and indestructible. I remember the Sling-shot bike: 2 cables instead of the down-tube, which follows the idea of the tensile stress in this section (...and creativity in handling the bike). if the next legal action is coming give them some lessons as a compensation first 🙂
Removable suspension solutions such as Redshift's stem and seatpost are the most pragmatic and cost effective. Unfortunately they don't appeal to the marketing department or lock customers into integrated,proprietary products.
The folks in the comments might have gotten carried away with power, efficiency, stiffness and all that good stuff. Wake up, it's just a regular fitness bike for recreational riders, it's not meant to "win" or to "perform". Looking forward to detailed performance analysis of omafiets.
I want to see a cut section of that DT, where that one tube intersects. Must be massive layup. The forces that go into those two almost horizontal tubes is so high, coming from the seat tube, it just wants to tear up the dropout section and snap the DT in two. The ST is not even going straight towards the dropout, nope, it has a small cantilever there. Probably massive too. Isn’t a suspension post doing a better job than this frame? Got rebound control as well 😜
When I saw this the first thing that came to mind was weight of the rider. This bike has to come with some sort of total weight limit. I can't imagine some 6'5 big broad shoulder dude getting on this. The other thing is manufacturing needs to get this bike made right the first time.
Has anyone considered that this bike range is just a means to generate publicity and possible increased foot traffic through specialized bike showrooms? Look at how much media coverage they have gotten for a FLAT BAR bike! I mean personally even if I didn't buy one I would certainly want to see one in person and I really would like to give it a ride to see what it felt like.
Yes but it's the wrong sort of media coverage. It's total ridicule. There is probably some smug git at Specialized HQ thinking the public is going to buy this and he's probably right but.... I don't think the public are as ill informed as they once were.
“The current generation is 600% stuffer than the previous generations “ tell that to your hair dresser lol
But if you have stupid stuff and engineers on RUclips explaining why it is stupid. It's not the right kind of pr stunt.
@@Hambini the public have never been more ill informed than ever before. You must remember that Joe Public has never liked to think for himself nor does he watch your RUclips channel - unfortunately :).
@D. W. This isn’t just any commuter, and I don’t see any mounting pots for racks or bags. A carbon fiber beach cruiser seems more the type.
Hambini's April Fools Joke: Hambini joins Specialized as lead designer.
For my engineering degree I had to build a cantilever structure. I screwed up in one of the dimensions and it looked a lot like that bike frame. It collapsed. Lesson lerned.
yeah, one of the first things we learned is that triangles are tough as shit
Can't be less strong than a beam bike IF there's compensatory material.
@@iddra1868 Same concept as BJJ. Solid and stable. That's why it's in the logo of countless BJJ academies.
i anticipate a lot of frame failures for Spesh. sigh.
@@robinfowler9477 nothing new for them replace trash with new trash
I saw this bike and I was like "oh yeah Hambini is gonna love this"
I am not an engineer, but builders' say, "if it doesn't look right , it's not right" and you explained why. Thanks.
They used to say that in yacht design but todays mini transat yachts proves it wrong.
It even looks plain ugly
Nobody: Bike frames all look the same, we need some more diversitiy!
Specialized: Hold my portuguese engineering degree
Bring back the hetchins curly stays, is what I think.
And what's wrong with studying in Portugal? You say it as though Portugal is comparable to the Democratic Republic Of The Congo.
@@MrPoopnoddy And what's wrong w/ Republic of Congo? You say it like it's the Online University of Non-Grounded Interwebz Comment Sections.
@@therealjamesjordan I knew what I was starting...
@@MrPoopnoddy Spoken like somebody who studied in Portugal.
Eff that I'm taking my chances. This bike is 🔥🔥🔥.
Hambini’s hairdresser’s knowledge of bending moments is a direct result of the meticulous detail and attention Hambini puts into his practical demonstrations with her. Highlighly comendable 😊❤
Thanks for that!
Does this mean his hairdresser is compliant?
@@trek520rider2 Considering the torque of his shaft, her compliance is admirable. As mainstream cycling media would say: ‘a great ride - begs you to go faster’.
Her !?
@@trek520rider2 laterally stiff though!
Beat me to it! Had a video for this.
1. Get your grad to do your CAD next time 😂
2. The seatpost deflection will still be magnitudes more than the deflection given by this design although more fore - aft than up down.
3. The trek doesn't have a damper, have a madone here in front of me. Just an L shaped carbon leaf spring. I quite like how its packaged...
4. You can still get more comfort without a damper, in theory. An elastic collision will have a lower peak acceleration than a non elastic collision. Same mass thus, lower peak force. Its peak force that hurts your backside you taught me all about that, remember that night in the flugplatz.
4. Only benefit i can see is shorter chainstays for poppin wheelies on the way to the office. No front mech though.
No front mech leaves space for classified hub! PROFIT
Sounds like a memorable night of teaching. Hambini the teacher; PT the student. Lovely
I see the advantages of suspension for gravel and even road bikes. I'm convinced that in a decade or 2 they're all going to be featuring suspension at both ends. Road bikes might only have 1-3cm but they're going to have some suspension. Gravel won't take so long. I see the advantages to having a flexy frame and fork for a passive suspension. The problem with flex for passive suspension is that it flexes in every direction uncontrolled. They've figured out how to make mtb suspension eat bumps great, relatively trouble free, reasonable extra weight and pedal decently. With pivots or flex zones and shocks. It's also worth pointing out that similar designs have been tried 130 years ago and have been long forgotten about. It's also worth noting that 130 years ago bikes were designed to ride on rugged terrain due to the surfaces that they rode on were often rougher than the fire trails that people currently use suspension mtb's on.
I still want your video
@Peak Torque Hambini is correct, isospeed has a damper. It is listed as a spare part.
no no no! I have tested it ....and I bought ...this construction makes something to the accelaration capacity----try it --I recommend ...BEFORE judging
I appreciate companies trying something new when bikes have been essentially the same for decades.
Your frame is the new derailleur hanger.😁
If you want a more comfortable bike, get a suspended seatpost. You can install it on your old frame (get the diameter right, hopefully the tube is round) and you might even find a model with damping (don't really know). The seatpost does not bob when smashing the pedals and quite likely the suspension has more travel than this one.
I understand the torsional stiffness is most critical in the lower tube. Suspended seatpost does not spoil this.
yep, decades-old strain studies illustrated this. They showed biggest strain in a normal bike is torsion in the downtube, followed by out-of-plane bending (side to side) in the seat tube (directly related to the tortion in the downtube). When I tuned the CF bike I made for my wife, downtube needed torsional reinforcement and DT needed stiffness added at the bottom.
@@SethJayson I vaguely remember in the early 1990's there was a design, perhaps called 'Slingshot', where the downtube had been replaced by a string or cable and there was a spring to take pulling tension. In the top tube near the seat tube there was a hinge. The torsional stiffness of that creature must have been ... interesting!
@@hartunstart Berm Peak's guy was talking about that one not long ago. ruclips.net/video/0ekXSqE4gNQ/видео.html
😂just when i thought: "When is Hambini making a video on the clown bike that has an integrated breakpoint😂
Integrated breakpoints could be nice with integrated handlebar routing.
Integrated breakpoints .... oh lovely
It’s going to be ridden down sidewalks at 37 watts I think any shape will work for that task
Basically. Simple reality is 99% of people on a bike give fuck all about performance metrics.
@@cjohnson3836 they'll care when they hit a few potholes and the frame cracks.
@@fergusdenoon1255 I hit potholes all the time on a carbon gravel bike. Trials bikes are carbon. Enduro bikes are carbon. CF isn't weak. If you think this is just going to fall apart, you're retarded. And commuters don't give a fuck about weight at the reinforcements. I commute on a 33lbs steel trekking bike. This fucktardistry of analyzing every bike as if it were a road race frame has long been stupid.
How many people in “37 watts on the sidewalk” crowd are willing to spend over $2k for this bike? Especially when they can buy an e-bike at a similar price point?
@An Obscure Tenet and those people are correct, the fragility of carbon fibre isn't contested hence why you'd never create a bike that puts side impact stress on a tube where all carbon fibre tubes have weakness...oh...oops
Clearly done for compliance reason, pretty clever actually.
they are more commited to snapping that frame in a crash than srams new rear mech,bravo.
I rode one on Tuesday just to see what it was about, it feels good, it’s very comfortable, didn’t seem like it was moving too much, power transfer seems normal, it’s wacky, but it’s a nice ride feel. Go ride one, and make another video. I rode the road version, it was just over 20 pounds for a size large. The Adventure version is about 24 pounds in a large.
Goes to show you can analyze the hell out of it, and be wrong at the same time. It might not look conventional but still works just fine. Good chance A) materials exceed requirements for strength, rigidity, etc for a bike frame, and B) a major company like Specialized would design, build, and sell, something that wasn’t well tested first. Roast all you want, it still works despite your snobbery. What we need is more innovation in the market, not useless sniveling about what you don’t like……
The actual issue is about repeated torque stress on the structure causing accelerated wear. A single ride won't tell you how fast the frame will wear. And whether it will fall apart in 10 months or in 10 years.
I don’t think this guy rides bikes
@@christianbarnay2499 I guess I have more faith in the engineering department at one of the worlds largest and most successful bicycle manufacturers…..
@@stevekelly6544 But are you sure an engineer was involved in this design? To me it was created by a graphical designer, not an engineer.
The laws of physics clearly state that this design is more fragile than the usual triangle.
The success will depend on the target market. If their goal is to sell it to people who buy a new bike every other year, it only needs to hold for 2 years.
When I buy a bike I want it to be functional on the long run. I am clearly not the target for this design.
Can’t wait to see the warranty claims!
12:03 I have ridden a bike with a saddle like this and the ride is incredibly smooth. And no stiction like other suspension systems.
Finally a proper reaming again. I miss the good old f-bombs galore from the pre-hairdresser era though.
Yes agree, either Hambini is getting old or having too much of a certain something.
I swear I've seen this frame on page 5 catalogue of some Chinese carbon manufacturer website.
I love this bike ;) love it 1 issue mount for umbrella is missing
Actually the forces are very small for a carbon structure and being over rigid is an issue. The primary twisting occurs from headset to crankset. Carbon has a near infinite fatigue resistance. This design will be maybe 200g heavier than a traditional design, however the vertical compliance which is only in use when you're sat down could reduce fatigue on your bum over rough surfaces significantly. For its use case as a comfortable tourer this is fine
Carbon may have good fatigue resistance, resin however most definitely does not
Yes. A spring saddle is precisely what I went for in my e-bike. You keep more in the saddle on an e-bike, so it made sense.
I’m convinced it’s true. I have seen articles over the last few weeks referring to the schematics. If they can figure it out it’s unique and brilliant. It looks amazing.
Personally I think it looks fugly. I actually hate when bike companies manufacture their frames with funny shaped tubing or insert funky geo. The classic two triangles looks the best. Simple symmetry is best. I get that it may have some comfort benefits when developed but to me this looks like a horrendous contraption. 😅
Now they just need a catchy name so they can pass this off as a design feature... call it, Reactive Camber? Torsional Levelling? TruTwist? Bowflex?
BowelFlex
FlippleFlop
They have: 'compliance junction'. Given that the bike was basically designed by the marketing department, the name probably existed _before_ the actual frame did.
Flexorama, Comfort Square, Wobbler, Spring Space,
Compliance Junction - is that not catchy enough?
Looks like someone in HQ watched good old "Pimp my ride" on MTV. So they installed rhombus frame into the rhombus frame so you'll be the top boy in da hood.
Just get a canyon leaf spring seatpost. The frame shape looks like something my 5 year old brings back from design technology at school made of cardboard and parcel tape.
Maybe Specialized Marketing forgot to mention that it is foldable bike! Lol
This is what happens when you let busty Emma from the marketing department loose on the technical design drawings.
Last week "mu" this week "spring coefficient". I feel all sorts of warm and fuzzy that my degree is coming in handy.
Another mass Specialized recall inbound
Kestrel made a bunch of bikes that simply omit the seat tube. That would be a much simpler way to accomplish this.
Aero advantage and well proven, so the UCI banned. The org also want to 'maintain' a traditional look bike for pro level racing must have a seatpost or some affect.
@Hambini can you also comment on the expected longevity of increasing flex on this kind of frame? Seems to me that stress from flexing should kill the resin component of the carbon fiber a lot quicker.
It would be interesting to know how much compliance this actually adds (in millimeters). I suspect a lot less than is from its tyres. Also, surely there will eventually be cracking around that three node joint?
I love a flexshion frame and taking it through the twisties as it twists. A pretzel rebound coming out of the curves is exciting.
Thank you specialized for giving content
I would also question how long this frame will last, and how many cycles of deflection it can endure before it starts to crack.
It's Nano Tech, you like it?
This looks to be an excellent design for dirt jumping.
The obvious power loss from a spring without much damping is why most mountain bikes have a suspension locking mechanism. It is even used on some full suspension rigs -- despite modern dampers and geometries supposedly being very good at limiting pedal bob. This thing looks like it will just bob around by design.
No one that buys this is going to give a fuck about pedal efficiency
Next step they'll sell you a new front-derailleur design that can attach to this type of frame 😂
Specialized riders: our disc brake bikes are 9kg what can we do?!
Specialized CEO: cut a section out of the frame
This reaming was inevitble. It was only a question of when not if.
I'm surprised that they don't add LED RGB to glow up that hole.
Don't give people ideas! :P
I'm waiting for RGB lighting on an ebike
Uhhh... I was waiting for that Specialized Ream....can't wait for Your attempt on SRAM Transmission 😇
Bang Bang ✊
Damn fine reaming old chap.....im sure all will be akimbo on Twatter too......Brilliant! ✌
Great ! Exactly the frame i needed for an insurance sca..claim, i meant claim ahem oh look at that bird outside !
Did they forget the amount of force on the Bottom bracket and the twisting force created by our legs. This force is now twisting the frame where in the past you would have a seat tube which resisted that twist. On my full suspension MTB i can already feel it, this is going to be complete wobble.
I'm really curious what this bike will pedal like, since they removed one of the most important frame peices for bottom bracket stability (in the "roll" axis to use airplane terminology).
Sirrus customers aren't exactly dropping watt bombs
I've always thought that carbon fibre was the ultimate material for 'product churning' - something's always the 'new improved', and even it's rubbish, there's always the next 'new improved' - you nailed it, Hambini!
This and the Trek Madone. The lengths the industry will go to in order to avoid GT's triple triangle design.
Their marketing department did another experiment with Fjallraven. A weird sort of case for Kanken rucksacks for cycljng holidays. If you take one look at their experiment and one look at Ortlieb, it is obvious they don't understand anything about cycling holidays. Probably more about marketing, they made a yt film too. Andthey didn't consult Hambini's hairdresser
Not sure to laugh or to cry watching that frame. I tend towards cry because..... come one, Specialized..... I expected more from you!
When a double diamond isn’t enough, create a double quadrangle. it is 50% more! And less in many ways at the same time.
I work as a mechanic at a shop which carries Specialized. Got to give the new design a spin around the block a few times. It’s fine, pretty smooth ride. Noticeable flex if you get out of the saddle and sprint. Overall, it seems ok but I wonder what the longevity of these frames will be? Also, the Sirrus is not a performance bike. It’s meant for commuters and rich yuppies out for a relaxing spin on the bike path. Could they save thousands by just getting a boing boing saddle? Sure but what’s the fun in that!
Now, do the Rondo version of this which is actually meant to be a performance bike!
Here's what I see. The downtube joint to rear axle joint, what is referred to as the 'spring' has a real problem. Assuming it's sturdy enough to support the loads, the problem is that this part is a fixed length. As it accepts load through the seat tube, that spring length will increase as the triangle flattens. It has no place to go. The downtube to axle distance is fixed. So where will this added length go? Sideways, It has to deflect someplace. Automotive leaf springs have a pivoting shackle mount to absorb this added length. Dual Suspension bikes have a pivot there and a shock to absorb the extra length. This is fixed. Something is gonna give way eventually.
Amen. Has to be way stronger in tension, so the only way it can move is to twist.
If this is a carbon bike frame, flexing any of the members intentionally will have negative effects eventually. If it's steel, it should be fine as long as they didn't make the tubes too thin. Forget aluminum.
The seat-stays/bottom of the down tube can flex and add length, and given the repetitive angles, it's easy to imagine there being a nice amount of compliance for the sort of person who's in the market for a chill, casual bike, which this largely seems to be.
@@firesurfer But you should be able to get the compliance in steel with a conventional frame. This sort of thing was tried in steel bikes in the late 19th century. If it was worth doing we would see these bikes all around us.
@bikefixr “Something is gonna give way eventually “. Agreed and oh so true 👍 ………..my patience 🙄
Wouldn't this just be a continuation of what they've been doing on mountain bikes with the flex stay? It seems pretty similar.
Agricultural bikes cather to the looks and looks only. Most of the design features there are technically pure nonsense.
I think I would go with all the brain power that Specialized have available on this one. We don’t want design and progress stifled by influencers
For the non engineers or manufacturers of components amongst us (myself included). Does anyone seriously look at this frame/setup and not laugh at it? If I had even a tenth of Hambini's knowledge I'd be choking in constant disbelief at "compliance junction " and the sheer sight of that frame.
I can remember trek leaving isospeed out of bikes with tires as big as the sirrus because slight changes in air pressure have a greater effect than anything a frame would be contributing. Tires also allow a range of adjustment based on rider weight that is one of the missing features from the frame. Lets face it, they just want to style it like a phone or a playstation, people buy the "cool" stuff, it doesn't have to work...
A bike that wants to tear itself apart. Watch out for the inevitable cracking near the joints
This is a self suspending design, for shock absortion of high frequencies and low modulation, which means smoother rides. Not bad at all. It should be combined with a hole in the bottom so it retains seat post length adjustability.
even as an architecture student I learned relatively quickly that the triangle is the shape of choice for any type of structural element, trusses in particular
depends how it rides in the end. I can see an optimum weight range being recommended. I always tell my wife that shorter members have greater torsional stiffness but she says she prefers greater compliance. What does that mean? Help me Hambini ?
Just don’t tell your hairdresser that line. Lol
@@JackofNothingess wife is a hairdresser!! LOL.
I rather have that saddle on a regular bike. Great you mention flex and rider weight, sadly that was ignored on some bikes in the past. I wish the nonsense would end.
It's a cool looking commuter bike which it is marketed as, they can work wonders with carbon fiber, tune it to work in all situations ...... after all, we just have to look at carbon handlebars, the forces that go through them, they never fail do they 🤪
Hambini what endurance bike do you recommend for a cyclist with 196cm and a budget of max. 2500€ ? The market is a jungle! Thank you a lot !
@ 05:34 hambini creates the first cycle flux capacitor 🚴♀️💨🔥
...sorry I'll get my coat. 🤦♂️
4:21 this sigh said it all...
This bike looks like a 90s full suspension MTB, only without the suspension part.
Actually, if they just gave it a double diamond frame, it'd be a fine old man bike.
Holy shit that was truly a cack inducing, 'HELLOOOO Hambini Fans'. I'm still recovering.
That is all I listened to in all of his videos and on repeat, never get tired.
The double triangle bicycle frame must be up there with the shape of a steam iron in terms of a design they got spot on first time and there's very little that can be improved upon
that frame is probably gonna crack
Diversity is our strength
GT: Three Triangles!
Specialized: No Triangles!
That specialized could make an interesting format for rear suspension on a bike.
Ignoring the lateral deflection for a mo, imagine if each ‘node’ was a pivot, with a horizontally mounted spring…
And the best thing is.... There are fans that are lining in to buy one, swallowing everything the brand squirt to them.
The Apple of bikes
I am really looking forward to stories from people who decide to purchase this bike
I'd be afraid to go over a pothole on that. Saddle forces directly over nothing. I've played enough bridge simulator type games to see that crumple.
Might as well take a normal double diamond frame and slap a cane creek thudbuster on it. Stiffer, lighter and probably more comfy as well.
Recent ‘innovations’ appear to be designed just to create “features”, rather than actually solving a real world problem, or to make bikes look like a Tesla.
they could also make the frame top tube very low and use a seatpost from a brompton
The only good thing you can say about it is that we should be glad that it is just a lifestyle bike and it doesn't really matter. Nobody will launch 1000-watt sprints on his daily commute, smash it around corners or go out of the saddle on climbs, if it breaks, Specialized will have to replace it. Let's hope they don't dare to apply this to a road bike design.
Rumour has it that the new Roubaix will have a shock in the missing space with even thinner tubes to provide adjustable compliance, probably called Futureshock III ... LOL... GO SPECIALIZED!!!!
It's a bike for GCN viewers. So the appearances and being "unique" are all that matter.
Spot on, I can see Simon getting all gushy over this monstrosity
Arrogant fks, both of you. ✊🏻💦
It’s just a novelty for everyday regular people.
Bicycles come in different sizes. A general assumption can be made as to the weight of the rider with regards to frame size. From there each frame size can be tuned to a different riders weight. If specialized did this the smaller frames would be substantially lighter as the leaf spring section would have thinner wall sections. The carbon material can have dampening built into it. Rubber is a spring with a high degree of dampening built into it in comparison to an equivalent steel spring. The carbon can be designed with a higher degree of dampening than steel. But lower than rubber. They also could insert easterner inserts inside the carbon spring for dampening.
Ooooh, was waiting for this one!
Hahaha, the specialzed sirrus, or: weed is legal in California and it shows!
It's a blatant John Castellano Sweat Spot without Pivots
My biggest issue is that the seat and pedals will move in opposition over bumps because of the shape they have chosen. As the seat pushes down it will try to close that trapezoidal shape which will force the pedals upwards. Surely this will give an odd feeling to the rider and even potentially make the bumps "feel" worse.
exactly and if you stand on the pedals to go over bumps that downward force will rocket the saddle upwards... pleasant!
Nice video and presentation.
This is quite unusual design. Appears a creation of an artist wearing engineer’s hat.
Ask its artist is frame was meant to be flex or not?
Mechanical engineering 5th lesson during my studies....calculation of tensions in bars/rods.
this Bike design reminds me of the late 1990´s when Mongoose, Raleigh and other brands designed the frames in try and error mode; the difference is my first 26" mountain bike was a "light-weight steel version" of 15 kg and indestructible. I remember the Sling-shot bike: 2 cables instead of the down-tube, which follows the idea of the tensile stress in this section (...and creativity in handling the bike).
if the next legal action is coming give them some lessons as a compensation first 🙂
Removable suspension solutions such as Redshift's stem and seatpost are the most pragmatic and cost effective.
Unfortunately they don't appeal to the marketing department or lock customers into integrated,proprietary products.
Warranty extravaganza!
maybe we can buy these and get in on the class action lawsuit
The folks in the comments might have gotten carried away with power, efficiency, stiffness and all that good stuff.
Wake up, it's just a regular fitness bike for recreational riders, it's not meant to "win" or to "perform".
Looking forward to detailed performance analysis of omafiets.
Except it doesn’t perform the task they claim it does. So, it’s another bike industry boondoggle that erodes consumer trust.
I want to see a cut section of that DT, where that one tube intersects. Must be massive layup. The forces that go into those two almost horizontal tubes is so high, coming from the seat tube, it just wants to tear up the dropout section and snap the DT in two. The ST is not even going straight towards the dropout, nope, it has a small cantilever there. Probably massive too.
Isn’t a suspension post doing a better job than this frame? Got rebound control as well 😜
When I saw this the first thing that came to mind was weight of the rider. This bike has to come with some sort of total weight limit. I can't imagine some 6'5 big broad shoulder dude getting on this.
The other thing is manufacturing needs to get this bike made right the first time.
The load is on the pedals , and a small percentage on the handle bar.. not on the seat 😂 can you imagine taking jumps or drops sitting down on a MB?
It will be fine when you fit the electric motor into the space above the cranks.