Designers ou la revolution par le style



  • <p>Comme je vois qu'on a entamé une discution sur le design dans bike porn, pourquoi ne pas la continué dans un topics AD, je propose qu'on regroupe ici les velos "différent" ou revolutionnaore par leurs styles ou inovations techniques, mais on est pas là pour regroupez que les porns, quoique un velo inovant et performant, peut parfois au resultat être beau</p>
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    <p>alors on reprend le fil sur le lotus sport 108 et 110</p>
    <p><img alt="" src="http://www.lotustalk.com/forums/attachments/f177/108147d1231895932-wtb-lotus-sport-110-time-trial-bike-pict0180.jpg" /><img alt="" src="http://img.blog.yahoo.co.kr/ybi/1/75/34/pyrosis02/folder/1579818/img_1579818_961845_0?1201607441.jpg" /></p>
    <p>The <strong>Lotus Type 108</strong> (originally known as <strong>LotusSport Pursuit Bicycle</strong>) is an Olympic <a href="http://en.wikipedia.org/wiki/Individual_pursuit" title="Individual pursuit">individual pursuit</a> bicycle. The revolutionary frame is an advanced aerofoil cross-section using a carbon composite monocoque.</p>
    <p>The use of monocoque frames for bikes is not new, but their development was improved through the work of Norfolk based designer <a href="http://en.wikipedia.org/wiki/Mike_Burrows" title="Mike Burrows">Mike Burrows</a>, who advanced both the design and build through utilising <a href="http://en.wikipedia.org/wiki/Carbon_fibre" title="Carbon fibre" class="mw-redirect">carbon fibre</a> mouldings.</p>
    <p>Burrows' design was initially rejected by British cycling manufacturers. However, it was to be received more enthusiastically by the <a href="http://en.wikipedia.org/wiki/British_Cycling_Federation" title="British Cycling Federation" class="mw-redirect">British Cycling Federation</a>. Unfortunately, the design was considered illegal by the <a href="http://en.wikipedia.org/wiki/Union_Cycliste_Internationale" title="Union Cycliste Internationale">UCI</a>. Therefore the project was prematurely shelved in 1987.</p>
    <p>In 1990, the UCI revoked the ban on monocoque frames. Shortly after this, <a href="http://en.wikipedia.org/wiki/Lotus_Cars" title="Lotus Cars">Lotus Engineering</a> became involved in the project through a friend of Burrows who took his design to the Lotus factory. The potential was evident and Lotus’ knowledge and aptitude at using carbon fibre techniques allowed the design to finally realise its potential. By February 1992, Lotus Engineering had acquired the rights and marketed the bike as the LotusSport Bike. In addition, the design was modified and perfected through a series of wind tunnel tests, by the Lotus aerodynamics specialist Richard Hill.</p>
    <p>The success of this was emphasised when Bryan Steel was able to shave five seconds off his time for the two kilometre pursuit at an international race meeting in Leicester.</p>
    <p>The profile of Lotus and Burrows was raised at the <a href="http://en.wikipedia.org/wiki/1992_Barcelona_Olympics" title="1992 Barcelona Olympics" class="mw-redirect">1992 Barcelona Olympics</a>. A new world record of 4 minutes 24.496 seconds was established as well as <a href="http://en.wikipedia.org/wiki/Chris_Boardman" title="Chris Boardman">Chris Boardman</a> winning the 4000m pursuit, lapping World Champion <a href="http://en.wikipedia.org/wiki/Jens_Lehmann_(cyclist)" title="Jens Lehmann (cyclist)">Jens Lehmann</a> in the final. The publicity of this medal, the first British cycling medal at the Olympics in 72 years, confirmed to Lotus the potential of marketing a production version. This was to become the Lotus Type 110. <sup id="cite_ref-0" class="reference"><a href="http://en.wikipedia.org/wiki/Lotus_108#cite_note-0"><span>[</span>1<span>]</span></a></sup></p>
    <p>Following the Olympics, the Type 108 was modified with the introduction of a set of elongated tri-bar handlebars to suit the, since banned, superman position.</p>
    <p>A total of fifteen Type 108s were built including one prototype in 1991, as well as three frames for use in the Olympic Games. A further eight replicas were offered for sale at £15,000 each. Of the fifteen, at least two are on display, one at the Lotus Factory at Hethal and the other frame (supposedly <a href="http://en.wikipedia.org/wiki/Chris_Boardman" title="Chris Boardman">Chris Boardman</a>’s gold medal winning bike) at the <a href="http://en.wikipedia.org/wiki/Science_Museum" title="Science Museum" class="mw-redirect">Science Museum</a> in South Kensington.</p>
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    <p>autre designer revolutionaire pour son epoque et non issu du cyclisme, francesco Quinn</p>
    <p><img alt="" src="http://aspttvttchalons.com/dossiers/photos/sbike_729.jpg" /></p>
    <p><img alt="" src="http://velospace.org/files/Sbike719.jpg" /><img alt="" src="http://storage.canalblog.com/11/28/116602/9580267.jpg" /></p>
    <p>De memoire son Sbike Daytona a été la même année, champion du monde de DH et de XC, en 92 je crois, ce qu'on ne verra jamais plus, deplus il a été produit et vendu ce qui est plutot une bonne idée dans le cas de ce velo mais hors de prix, le 729 de mémoire devait faire 25 000 ou 30 000 frs de l'époque.</p>
    <p> </p>
    <p>Maintenant le Kirk precision, velo qui est aussi inovant</p>
    <p><img alt="" src="http://www.classicbikeshop.eu/afbeeldingen Classic Bike website/frames/Kirk Presicion 228/DSC_7770.JPG" /><img alt="" src="http://www.classicbikeshop.eu/afbeeldingen Classic Bike website/frames/Kirk Presicion 228/DSC_7771.JPG" /><img alt="" src="http://www.classicbikeshop.eu/afbeeldingen Classic Bike website/frames/Kirk Presicion 228/DSC_7782.JPG" /><img alt="" src="http://www.classicbikeshop.eu/afbeeldingen Classic Bike website/frames/Kirk Presicion 228/DSC_7804.JPG" /><img alt="" src="http://www.classicbikeshop.eu/afbeeldingen Classic Bike website/frames/Kirk Presicion 228/DSC_7790.JPG" /></p>
    <p><img alt="" src="http://www.essexroadscyclingclub.com/images/bikes/JY20070516DSCF1243.JPG" /><img alt="" src="http://www.kirk-bicycles.co.uk/Images/Kirk/kirks_008b.jpg" /></p>
    <h1>History</h1>
    <p>
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    <td><em>Letter in <a href="http://www.v-cc.org.uk/" target="_window">News and Views</a> 292 (sent in by Norris Lockley, Settle)</em> - Gerry Moore asked in N&V291 for information on the revolutionary Kirk Magnesium frame and its inventor, Frank Kirk. The first Kirk appeared in the New York Cycle Show in May 1986 and then at the Cologne Show in September of the same year. I recall attending that Show and being attracted by a large crowd gathered around a small stand. Frank Kirk was displaying his revolutionary moulded magnesium frame to a sea of awe-struck European techno freak cycle enthusiasts. Its reception was incredible.</td>
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    <td>What those admirers did not know was that the frames on display were actually made out of sand-cast aluminium (<em><strong>Note: </strong> according to Frank Kirk they were high purity magnesium</em>), Frank having not at that time perfected the moulding of the molten magnesium. Similarly, cast frames were used by professionals such as Steve Poulter and the Australian Phil Anderson (actually ridden in the Tour de France) to promote the new brand. The advance order book from these two shows was apparently overwhelming and Kirk encountered real problems producing the frames in any numbers at his Basildon, Essex factory. In addition his link up with the Ron Kitching UK sales machine had pulled in large volumes of orders. Kitchings were to do all the building up of the bikes, using SunTour groupsets.</td>
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    <td>For a period of about two years Kirk Cycles appeared to disappear from the bike scene but resurfaced at a new factory at South Woodham Ferrers near Chelmsford. Having already spent a substantial amount of money in developing both the CAD designed frame and the method of blast moulding it, Mr Kirk found new investors and set up shop to go into mass production. I recall visiting the Chelmsford factory a couple of weeks after it had opened, and only 12 hours after a 'flash fire' during which the magnesium dust had ignited almost spontaneously, causing quite a lot of damage to the installations - just one of the many problems that seemed destined to plague Mr Kirk.</td>
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    <td>I recall marvelling at some of the claims that the manufacturer made at that time such as the eight seconds that it took to 'build a frame' by blasting molten magnesium under tremendous force along a 'tunnel' and into the frame mould, or the one cubic metre of sea water which, when refined, would produce enough magnesium to blast into a frame, or the sheer strength of the frame itself as demonstrated by Kirk when he drove his Mercedes car over it without destroying it. His two most famous claims for his product was that the 'Kirk' was the world's first fully recyclable frame, it could be melted down and remoulded into anything you fancied and secondly that it was the only true test of a racing cyclists' real ability, because each frame would be exactly identical in every respect, size, weight, mechanical characteristics etc to every other Kirk.</td>
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    <td>An MTB version was produced alongside the 'Touring' and the 'Racing' models and Dawes took over the distribution, but not very many seemed to actually reach the market. Of those that did a large percentage were plagued with structural problems, such as self-detaching brake bridges. I recall that in 1989 I agreed to try to find importers for the Kirk range in France and Belgium. When displaying a Kirk road bike to an interested distributor in France, I had the misfortune to have both gear lever bosses detach themselves from the down-tube and for the threaded insert in the bottom bracket to work loose, together with the sleeves in the head tube. A Belgian told me of the brake bosses on an MTB dropping out of the rear stays. In short the 'Kirk' frames had very many teething problems, but this should have been anticipated in the development process, and it is a pity that Frank had the pressure of getting the frame on to a very receptive market before the frame was ready to meet its end-users.</td>
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    <td>There is no doubt in my mind and in my experience of riding a Kirk, and of having one on the roof of my car as I toured around Europe, that the 'Kirk' was one of the greatest 'head turners' that the cycle industry had seen in more than 25 years. More pity therefore that it seems to have disappeared for good.</td>
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    <td>The last that I heard of the project was that development and troubleshooting costs had escalated out of all control, but that Norsk Hydro, the Norwegian industrial giant and Europe's largest refiner of magnesium, had taken a controlling stake in the company, but even that cash injection does not appear to have saved the Kirk magnesium frame from extinction.</td>
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    <td>Frank Kirk himself at the time of conceiving the idea of the Kirk was a designer at Ford's at Dagenham. As the story goes Frank Kirk got his original idea for the frame when he was working on designs for some large scale plastic mouldings for Ford cars - the bumpers on the Ford Sierra being the actual inspiration and most often quoted.</td>
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    <td>I bought six of the first batch of frames produced at the Chelmsford plant and all but two were returned due to the failure of sleeves, bonded to stay in place. My own frame, carefully rebonded in places with Araldite I sold on, and the last frame was the target of a smash and grab raid on my shop window. Despite its niggling faults I still find Frank Kirk's design very attractive.</td>
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    <h1><a name="Today">'Today Is History' by Gerry Moore</a></h1>
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    <td><em>Extract from an article in The Boneshaker 165 Summer 2004 (written by Gerry Moore)</em> - The Kirk Precision bicycle frame was the brainchild of Frank Kirk, a gifted design engineer with many years experience in the automative and aerospace industries. He had seen the possibilities of casting technology whilst working as a designer for Ford Motor Company at Dagenham, Essex. The company was producing large mouldings for car bumpers and he saw the potential for using such a system to produce other products. He had had previous experience of magnesium casting, when working for a company making components for Jaguar fighter aircraft and high performance cars. By the 1980s, he became convinced that he could put his moulding and casting knowledge into the production of a cheap and durable bicycle frame.</td>
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    <td>Magnesium alloy is one of the lightest metals by volume though its modulus of elasticity (its rigidity) is much lower than steel. It is at the same time cheap and environmentally friendly. A cubic meter of seawater contains enough magnesium to make a bicycle frame. But to turn the magnesium salts into metal requires large amounts of electricity hence Norsk Hydro's later involvement. The frame design was carried out using what was at the time a very sophisticated computer, producing mathematical models analysing the criteria of production, stress, ride, performance and styling. He aimed to match the most advanced conventional steel frame.</td>
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    <td>To his surprise, Kirk found that computer-aided-design (CAD) could not improve on the standard double triangle concept, nor on the positioning of components in relation to one another, as in the traditional bicycle frame design. What the computer did achieve, however, was to design a frame unhampered by the limitations of tubing. In an interview for <em>Bicycle</em> magazine Kirk claimed:</td>
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    <td>"...the section that represents the down tube on a conventional frame is able to almost exactly follow the axis of torque, about which the whole thing potentially twists, and which accounts for most of the increased stiffness. We were able to use CAD for small fine tuning adjustments and for refining the aesthetics. The computer could predict just what we could afford to change, and what we couldn't."</td>
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    <td>The frames were to be built by blasting molten magnesium into a mould under force. They claimed that the whole process of producing a frame took only 8 seconds. It has been difficult to discover where the first factory was located. The earliest leaflet gives the company name and address as Kirk Precision Ltd, Unit 4, Hornsey Square, Southfields Industrial Park, Basildon, Essex. At this time there was only one model on offer, a road frame and only one colour, white. There was also only one size available, approximately 22in. The claim was that the frame design would accommodate riders of heights between 5ft 5in and 6ft 2in, using varying lengths of seat post and handlebar stem. Steel inserts were incorporated in both head-tube and bottom-bracket; billed as being replaceable. An aluminium sleeve was fitted to hold the seat-post, but whether these were replaceable or not is unknown. Carbon fibre seat-post clamps and front and rear gear-change hangers were fitted. Kirk suggested that due to the unique construction, every frame would be identical, allowing the only true test of a racing cyclist's ability. He would demonstrate the strength and durability of the frame by driving his Mercedes car over it. The frame would survive unscathed.</td>
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    <td>The Kirk Precision was launched at the New York Cycle Show in May 1986. Kirk could afford only a small stand at this prestigious event, but the appearance of his neat, girder-like frame caused a sensation. The first European outing at the Cologne show, in September that year, was no less rapturous. What admirers did not know was that the supposed magnesium frames were in fact made of sand-cast aluminium (<em><strong>Note: </strong> according to Frank Kirk they were high purity magnesium</em>). Apparently Kirk was experiencing production problems with the magnesium casting technique. To meet the show deadline he was compelled to compromise. The two shows were outstandingly successful. Agents from both sides of the Atlantic fought to represent the new company giving Kirk a real problem. He was aware that despite the heavy financial investment in research and development and in setting up the new factory, time was still needed to perfect his novel method of production. To add to the problems, he had a full order book. As an engineer he must have been screaming for time to perfect the process, but financial investors demand a return, so, despite misgivings, he allowed the frame on to the market. It won several design awards and patents were granted in the United Kingdom, Europe, USA, India, Pakistan, Japan, South Korea, Canada, China, USSR, Thailand, South Africa and Australia.</td>
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    <td>The first frames were built-up into bicycles and marketed in the UK by the Ron Kitching organisation. Kirk engaged the British professional and Olympic rider, Steve Poulter, to ride a Precision frame with top equipment. He also supplied frames to the Dutch TVM team for the Tour de France. In the USA, the address for the company was given as Kirk Bicycles USA Inc, PO Box 866, Menlo Park, California. This suggests that orders were being handled from the UK. By 1989 two models were available in the USA, for road racing and touring, frame sizes were given as 21in and 22.5in, with two alternative paint finishes; white with red accessories and light blue with blue accessories.</td>
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    <td>It appears the demand outstripped the capacity of the Basildon factory and Kirk was forced to seek outside financial investment. Probably late in 1989, or early 1990, the massive Norwegian company, Norsk Hydro, became involved. They were, and remain, the world's largest producers of magnesium, and they saw the Kirk bicycle as an outlet for their product. Agreement was reached and three factories in South Woodham Ferrers, Essex, were leased. Little is known about the actual frame making process, but apparently a thousand tons pressure locked two halves of a mould together whilst molten magnesium alloy was injected in less than a fiftieth of a second. Robot handling was used in what was the largest system of its type in Europe. UK marketing was put into the hands of Dawes Cycles Ltd and whilst the Kirk brand name was retained, a new range of models was introduced. The old Precision frame was tweaked, painted cerise, and renamed Genesis. A so-called street bike was introduced in aqua named Ranger. The newly emerging market for mountain bikes was catered for by the introduction of a model called Revolution, with raised chain stays, finished in fashionable black. The American market was offered the same three models renamed Competition (Genesis), a touring bicycle Touring (Ranger) and a mountain bike name City/Trail (Revolution). These models were available in a range of seven colours; white with blue logos, white with red logos, yellow end with grey base, two tone blue, sunburst, dark blue end with white base and Ferrari red ends with white base. Whether the frames were painted in the UK is unknown, but it seems likely that they were shipped to the USA unfinished and sprayed to order there.</td>
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    <td>For a while the new set-up seemed successful. The design concept was good; manufacturing, financial backing and marketing were now in the hands of an experienced company, so why are they no longer making bikes today? Probably a combination of factors conspired against them. The time delay between concept and production had been too long, problems with the early models were not easily resolved, and the expectations of Norsk Hydro were not fulfilled quickly enough after their massive capital investment. And there were definite reliability problems - a Bath shop sold about six of the MTBs in 1992. All of them came back with broken frames. By 1992 Norsk Hydro had pulled out. Dawes soon cleared their remaining stocks, and practically the only Kirk bikes now seen are those on Veteran Cycle Club rides.</td>
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    <td>So what was the Kirk magnesium frame like to ride? Early frames had a reputation for breaking. Lever bosses fell off and bottom-bracket inserts worked loose. These problems were sorted out and later models were ok. The item that caused the greatest problem had nothing to do with the frame at all. It was the forks. The first models were fitted with Cro-Moly forks with forged dropouts. These increased the overall weight of the bicycle and were soon replaced with Vitus 979 Dural forks, these in turn were so flexible that they made the bike lethal. Many owners changed to Reynolds 531 forks, to cure the problems. The Tour de France team that rode Kirk frames used Reynolds 753 forks, so it seems to confirm that there were problems with the Dural models. My own Kirk Precision, frame number 1159, is fitted with Vitus alloy forks and has never suffered from any handling problems. It seems that if carbon fibre forks had been available when the frames were in production, potential fork problems would have been eliminated. My Kirk Revolution mountain bike, frame number 201082, was fitted with Rock-Shox when purchased making it an ideal machine. In spring 1989, in <em>New Cyclist</em>, Mike Burrows reviewed the Kirk touring model. His critique was not unkind, the main complaints were that the magnesium frame was no lighter than a steel one and the bottom bracket had quite a lot of deflection. After test-riding if for a while he said 'I have grown quite fond of its chunky feel and looks...'. Surfing the web for Kirk Precision brought forth the following concerns from the USA. Magnesium frames will corrode if exposed...the Dawes Kirk suffered badly from corrosion and frame fatigue...If the Kirk was exposed to heat, it would burst into flames!</td>
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  • [i]Well well well…
    [/i]
    [url=http://mooiefietsennicebikes.tumblr.com/post/136868153272/paulo-de-guistis-concept-bike-3628-wheels][img]https://40.media.tumblr.com/4dad0a905e5a8569c3c31478adcf8c65/tumblr_o0mija52pW1t19os5o1_1280.jpg[/img][/url]





  • je comprend pas le ratio par rapport à la geule du vélo



  • Y'a surement un démultiplicateur dans le moyeux, mais c'est vrai que ça fait pas équilibré du tout !



  • La taille de la roue (36er?), donc ce n'est pas un petit ratio au final ;)



  • Oui plus le diamètre de la roue augmente puis le développement est grand, du coup la malgré le petit pignon ça doit tirer pas mal



  • Mais bon à part la tronche du vélo, la grande roue c'était déjà fait avec Moser !

    [url=http://p5.storage.canalblog.com][img]http://p5.storage.canalblog.com/58/66/1063110/93219532_o.jpg[/img][/url]



  • Zoombike, conçu en 1998 (mais jamais commercialisé si j'en crois ce que dit internet) par Richard Sapper, designer majeur mais mort dans la quasi indifférence médiatique le 31 décembre 2015.

    [img=933x673]http://richardsapperdesign.com/images/archive/51/59/IMAGES_939_5159e0571276a.jpg[/img]

    [img=933x362]http://richardsapperdesign.com/images/archive/51/59/IMAGES_940_5159e05c356dc.jpg[/img]

    [img=640x885]http://richardsapperdesign.com/images/archive/51/59/IMAGES_941_5159e05d3a7cf.jpg[/img]

    [url=http://richardsapperdesign.com/products/2000-today/zoombike]The Zoombike was conceived as a vehicle with the same geometric proportions of a normal bicycle, but able to fold and unfold as easily and quickly as an umbrella through a press-button system. This grants optimal convenience for urban transportation, whether on the road, in a metro, tram or bus, in the trunk of a car, or in other confined spaces such as elevators. It can be stored in any wardrobe or cabinet, and can even be hung on a coat hook in a small apartment. The bike features three gears, is constructed out of aluminum, and weighs only 10 kilograms. An even lighter magnesium version has also been in development. The disk wheels allow for very low air resistance, resulting in excellent mechanical efficiency, while transmission ratios are identical to a normal road bike despite the smaller diameter of the wheels. To achieve such characteristics, the design draws on aircraft technology rather than traditional bicycle mechanics.[/url]





  • Pétard j'aurai la désagréable impression de pouvoir me poncer les dents à chaque seconde en cas de chute... :s



  • Impression 3D
    Il y avait déjà des pièces en titane comme les raccords ou des pattes mais là ça va plus loin.

    [img]http://www.contemporist.com/wp-content/uploads/2016/02/3d-printed-metal-bike_040216_01-800x534.jpg?1ff4a6[/img]

    plus d'infos [url=http://www.contemporist.com/2016/02/04/a-team-of-students-have-designed-and-built-a-3d-printed-metal-bike/]ici[/url]



  • je sais pas où le poster alors je le mets là

    [img]http://www.pedalroom.com/p/moser-leader-ax-hour-record-15901_17.jpg[/img]

    Moser leader AX hour record
    " Fixed gear Time Trial bike, probably one-off, it has the geometry of the bike that Francesco Moser used for his 3rd attempt to the hour record in the 1994, inspired by Graham Obree's Old Faithful that broke the record the year before. "



  • c'est un montage reinterprété d'un gus de lfgss par contre celui la - Ya pas de prolo normalement :

    [img]https://s3-eu-west-1.amazonaws.com/inspire-ipcmedia-com/inspirewp/live/wp-content/uploads/sites/2/2014/09/Moser-1994.jpg[/img]
    dommage que ca soit de la daube en cromo©, il est quand meme joli ce cadre.

    Un cadre de la generation d'apres est passé en vente ya pas moulte, personne n'est tenté pour faire un montage ?
    [img]http://i.imgur.com/zgLDAQ4.jpg[/img]
    "on est pas bien, là ?"

    BTW, à propos d'oeuf :

    [img]http://images.cyclingtips.com/content/uploads/2016/02/Rob-English-Graeme-Obree-bike-feature.jpg[/img]

    http://cyclingtips.com/2016/02/nahbs-2016-rob-english-reinterprets-graeme-obrees-old-faithful/







  • Ouch, de bon matin c'est dur là... :s



  • L'assurance d'un rendement exceptionnel le radial avec 10 (ou 5?) rayons a l’arrière :D.

    par contre, trois bonnes nouvelles,

    • en 2022, beh le di2 et les freins a dix c'est encore pour les vélos du futur.
    • à priori, les modifications génétiques sont monnaie courante, et les tri-dorks ont des humerus de 10cm pour gagner en aero.
    • les chaines ont ete remplacées par des petites queues de marsupilami.

  • intense

    Faudrait pas confondre designer et ado qui s'amuse avec 3d studio max.



  • Il a quand même 27 ans le garçon si j'en crois son FB [size=xx-small](cf. dans le [i]about[/i] du lien sous la photo)[/size] et est gentiment doué quand même.

    [quote='guillaume_' pid='2073108' dateline='1458039545']
    L'assurance d'un rendement exceptionnel le radial avec 10 (ou 5?) rayons a l’arrière :D.
    [/quote]

    6 !

    [quote='guillaume_' pid='2073108' dateline='1458039545']

    • en 2022, beh le di2 et les freins a dix c'est encore pour les vélos du futur.
      [/quote]

    C't'un freinage par induction moléculaire !
    [size=xx-small](ou un truc du genre quoi…)
    [/size]

    [quote='guillaume_' pid='2073108' dateline='1458039545']

    • les chaines ont ete remplacées par des petites queues de marsupilami.
      [/quote]

    Aha ! :thumbs_up:


  • intense

    Être bon dessinateur/illustrateur n'a pas grand chose à voir avec être un bon designer. Ce n'est pas vraiment le même métier en fait.



  • [quote='Tomi' pid='2073131' dateline='1458042181']
    Être bon dessinateur/illustrateur n'a pas grand chose à voir avec être un bon designer. Ce n'est pas vraiment le même métier en fait.
    [/quote]

    Yes[hr]
    Et être un bon designer ce n'est pas seulement savoir faire de la modé, des images et une vidéo
    https://www.behance.net/gallery/25630449/BAIK

    [img=681x430]https://mir-s3-cdn-cf.behance.net/project_modules/1400/436fc125630449.56e9d040b4d32.png[/img][hr]
    .........



  • Ce message a été supprimé !




  • c'est la journée des direction/pointdefatigue aujourd'hui :D



  • L'automobiliste , motocycliste, cycliste,... qui suit doit aussi se prendre une sacré frayeur envoyant le vélo se démembrer de la sorte... J'aurais envie de piler sur mes freins en voyant ce petit numéro devant moi. On dirait qu'il va se ramasser sur la route :s



  • C'est un velo por Erostate ca



  • Celui-ci est plutot crédible je trouve.
    Malgré le fait que la rupture des pièces au niveau du tube de direction et le support de selle déporté ne me plaisent pas trop
    http://www.industrialdesignserved.com/gallery/18057759/Alwin-Wooden-Aero-Road-Bike

    [img]https://mir-s3-cdn-cf.behance.net/project_modules/disp/778bfa18057759.562c31e40ae8b.jpg[/img]







  • Une roue avant pour transformer son vélo classique en vélo à assistance électrique.

    [url=http://www.contemporist.com/2016/05/02/now-you-can-make-your-own-bike-electric-in-60-seconds/][img]http://www.contemporist.com/wp-content/uploads/2016/05/electric-bike_020516_01.gif?1ff4a6[/img][/url]

    Cliquez dessus pour plus d'infos.



  • alors ca c'est sympas mais ca serait mieu pour faire une sorte de moto du futur



  • [url=http://blog-espritdesign.com/transport-2/velo-transport-2/heroin-bike-project-marc-simoncini-41905][img]http://blog-espritdesign.com/wp-content/uploads/2016/05/Heroin-bike-project-design-Marc-Simoncini-blog-espritdesign-3.jpg[/img]

    Heroin, 14 900 €, 349 ex., garantie à vie.[/url]



  • La texture alvéolé ca marche vraiment en gain vous pensez?
    C'est vrai que ca se retrouve de temps en temps sur de la caisse de course.
    Y'en a sur des bidons profilés de CLM et des casques en tout cas.
    Mais à l'échelle du vélo, à moins de faire des BRM de 200km à 40 de moyenne, on doit pas voir grand chose non?
    Quoi qu'il en soit l'ensemble est très beau je trouve.
    Et surtout bien ficelé.



  • c'est baser sur les écailles des requins j’imagine ?


  • intense

    La peau de requin n'a rien à voir:

    [img]http://s2.e-monsite.com/2010/02/03/06/peu-du-requin.png[/img]

    Dams ce cas précis c'est plutôt inspiré de la balle de golf mais je pense que c'est essentiellement du marketing même s'il y'a une part de vérité et qu'il y'a sûrement matière à creuser à ce sujet.



  • c'est la même idée ,garder de l'aire/eau bloquer à la surface parce que aire/aire (ou eau/eau) ca "glisse" mieux que les tubes contre l'aire :huh:


  • intense

    Une histoire de turbulence qui fait que l'air glisse par dessus ces tourbillons si j'ai bien compris.

    Mais ce que je veux dire par là c'est que les alvéoles telles qu'on les conçoit sur les balles de golf et sur les zipps sont faites d'une façon très régulière qui est facile à reproduire industriellement (et donc facile à "vendre" / marketing toussa) mais ça ne veut pas forcément dire que c'est la meilleure façon de le faire d'un point de vue aérodynamique et on pourrait imaginer des textures moins visibles ou autre.

    Si un aérodynamicien est dans la salle ?



  • oui les alvéoles doivent être plus simple à faire mais surtout une structure plus fidèle aux écailles serais très fragiles et s’userait rapidement :-/



  • [quote='legarsaupseudorelou' pid='2089864' dateline='1462967654']
    aire/aire (ou eau/eau) ca "glisse" mieux
    [/quote]

    pour l'eau c'est plus compliqué



  • Du coup, on a plus qu'a faire des tenues avec une texture balle de golf, et on sera ultra-aéro ? Ok je lance le truc, il y a de la thune à se faire



  • Ahahah, un vélo inspiré du modulor, la bra*lette intellectualo-architecto-designer, voyez les escaliers qui découlent du modulor, franchement un vélo basé la dessus, j'y crois pas une seule seconde !



  • reste plus qu'à concevoir des personnes dont les physiques sont basés sur le modulor et ça va être bon tout ça..[hr]
    et à corriger les fautes d'orthographe sur le site car quand tu veux bicrave un truc à 15000 boules t'essaies de faire gaffe quand même..

    garentie à vie





  • sauf que la vitesse d'un cycliste n'est en rien comparable à celle d'une balle de golf



  • je serai curieux de savoir comment on a trouvé que les alvéoles faisaient un tel effet


  • intense

    C'est pas tellement les alvéoles mais les surfaces irrégulières.

    Les golfeurs se sont rapidement aperçus que les vieilles balles allaient plus loin. Du coup quand ils avaient de nouvelles balles ils les "tabassaient" pour les rendre toute destroy. Forcément après il y'a eu un marché pour la balle destroyée d'origine mais comme ça flinguait aussi la durée de vie des balles un mec à décidé un jour de les produires avec des petits trous d'origine. Les alvéoles c'est juste la version industrialisée de la balle à "tabassée".



  • Tu veux dire qu'en faisant un max de pocs dans nos cadres on ira plus vite? :devil:



  • @Elpolo
    C'est l'avenir, on peut s'associer si tu veux, j'ai quelques photos au chaud du coup ;)



  • [img]http://www.englishcycles.com/wp-content/uploads/2013/05/Blue_White_TT_001_4425.jpg[/img]

    j'hesite c'est presque porn je trouve mais cette selle est mauvaise

    plus ici [url=http://www.englishcycles.com/custombikes/time-trial-mk2/]englishcycles[/url]



  • Il est passé dans le bike Porn je crois.
    La selle est étrangement organique, mais vu de 3/4 ca le fait bien.
    Je le trouve perso superbe, dans l'esprit proto d'endurance du Mans. Et la selle à ce petit côté longtail des alpines et autres contemporaines d'époques qui ne me laissent pas indifférent.



  • Pareil que wap, je le kiffe bien moi celui ci... :thumbs_up:



  • Juste pour revenir sur les alvéoles: seulement valable pour des corps en mouvement ( rotation) en même temps qu' ils pénètrent l' air. Sinon l' aéronautique s' en serait déjà inspirée sur ses ailes.
    Par contre un revêtement légèrement rugueux aurait des effets plutôt favorables à l' écoulement de l' air. Donc l' idée des écailles de requin est sérieusement étudiée pour mettre au point des revêtements et peintures qui économise l' énergie sur les bateaux et autres ailes d' avion. Le meilleur moyen d' améliorer l' aérodynamique sur un corps statique reste de mettre des déflecteurs au bon endroit, autrement dit un garde boue enveloppant entièrement les roues serait 100 fois plus efficaces que n' importe quelle astuce appliquée sur les jantes ( même en comptant les frottements infimes d' air entre garde boues et mouvement de la roue.

    Enorme différence entre l' air et l' eau , l' air est comme tous les gaz compressibles. autrement dit un carenage avant avec position en prolongateur , des gardes boues enveloppants et un déflecteur "en creux" derrière une selle ( comme sur le vélo gitane wolber) sur un vélo course " normal" et c' est 2 à 3 km/ heure potentiellement gagné sur le plat. Evidemment à position identique du coureur.



  • Sur les bateaux de courses actuels la tendance est au foil, aile inversée qui sort le bateau de l'eau afin de réduire au maximum le frottement. Il ne flotte plus, mais vole littéralement au dessus de l'eau.
    Du coup, il ne reste quasi rien dans l'eau. Je ne sais pas si la partie immergé est traité d'une certaine façon, mais la partie emmergé des machines est assez classique. Carbone ou fibre, peint ou vernis. Et les vitesses atteintes sont du coup vraiment dingues. Accélérations, changement de bord ultra rapides, si vous avez l'occasion de regarder une régate de la coupe de l'américain par exemple, c'est bluffant.

    Bref, si on revient au velo, le coup de l'alveole balle de golf s'applique peut être plus logiquement sur la jante qui tourne, donc crée un flux constant de déplacement d'air, et réponds à la définitions de Fafa, alors que la cadre mériterait un traitement en écaille, tout comme la combi, casque, bidon du cycliste, qui sont fixes.

    Pour en revenir aux écailles, les combinaisons de natation des JO de Londres je crois, qui ont été toutes interdites peu de temps après, avaient permis de battre un nombre de records du monde incroyable. Et elles étaient toutes conçues selon le principe des écailles de requin.

    On se lance dans une étude poussée du cadre de demain les gars?
    Je suis coté designer du coup ;)



  • on devrait faire des capotes à alvéoles, pour le sexe contre nature, ça serait beaucoup moins douloureux



  • Sinon pour les écailles de requin de cadre ,se serait déjà pas mal de rayer un max le cadre avec du papier de verre 100 et boom !!!!+0,5watts :lightbulb:



  • [quote='legarsaupseudorelou' pid='2091010' dateline='1463342783']
    Sinon pour les écailles de requin de cadre ,se serait déjà pas mal de rayer un max le cadre avec du papier de verre 100 et boom !!!!+0,5watts :lightbulb:
    [/quote]

    Clm rats :thumbs_up:



  • merde encore un designer qui essaie d'etre intelligent...un jour ils arreteront, un jour.... j'espere....

    plus [url=http://www.designboom.com/technology/caminade-la-grande-motte-jean-gabriel-causse-bicycle-05-16-2016/]ici[/url]
    [img]http://www.designboom.com/wp-content/uploads/2016/05/caminade-jean-gabriel-causse-la-grande-motte-bicycle-designboom-01-818x545.jpg[/img]



  • Ce moyeu quoi:dodgy:
    Et le moyeu électricité avec un mono Brack :s



  • c'est un zehus batterie interne et rétro frein électrique.


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