ACE CAFE RADIO

    mardi 3 juin 2014

    ACKRILL CFM GT550 REBUILD


    Ackrill GT550 1
    Remember the kid in school whose tie was always neat, with the same knot everyday, pencils correctly sharpened and unchewed ends, sports kit folded and stacked in a holdall carried using the shoulder strap and rather than both handles, slung nonchalantly over to one side?  I think Simon from Cheltenham, Gloucestershire was one such kid. The planning, parts sourcing and rebuild of this 1986 Kawasaki GT550 is the work of a methodical man. Well, 2 methodical men and a young person learning about methodicalness.
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    Simon’s dad has had this GT from new and it was well used by him in the UK and on European trips before passing down the baton. After further trips, both solo and two-up the poor old girl was in need of a refresh.  The miles and 28 years had taken their toll so a full on restoration was on the cards. But as so often the case, returning something to its former glory leaves the present and future devoid of something new and interesting. Plus, having your bike featured in the ‘Shed is way better than on Polished Chrome Monthly, right?
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    One thing that the Ackrill Trio (Simon, his son and his dad) wanted to maintain was the heritage of this particular bike so sourced a donor frame that would allow hacking, chopping and welding. Unfortunately the history and integrity of this frame were questionable so the original was used, with the caveat that all mods must be removable should the need arise to return the bike to original, to honour the near three decades of service the GT had given. So, the flavour was to be Kawasakis from the ’70s & ’80s with a bit of Flat Track for piquancy.
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    CFM Customs instigated a complete strip down, strip to bare metal before the replate, repaint and re-powder exercise could begin. Devils Ride took care of the candy-pearl Kawasaki green on the tank and side panels to give a more modern twist to the traditional colour.
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    To be able to use modern Renthal bars a new Z Power top yoke was fitted, giving a comfortable riding position and the way-out-wide grips provide plenty of leverage to force the GT into bends.  Petit, low mileage, single and optimistic could be the header for a lonely hearts ad, but works for the Kawasaki’s speedo too, which sits in a custom bracket.
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    Wrenchmonkies shipped over a pair of scrambles foot pegs, and front mudguard which of course bolted straight on with no fettling required. The rear mudguard is new, Hitchcocks’ Royal Enfield Cafe Racer kit, in nice, lightweight aluminium.  Tidying the rear and removing factory parts has shed around 10kgs which will give the old motor a new lease of life.
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    Rear shocks are Hagon and the original forks have been rebuilt so handling is a slight improvement over standard, with modern spec but classically patterned Continentals ensuring all this hard work stays shiny side up. The seat has been reshaped and covered by Smart RRRs with plenty of space for a pillion and plenty of foam for long distance comfort.
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    Simon had been told that K&Ns would turn the 550cc four-pot into a lumpy beast but Carl at CFM had no trouble in dialling in the carbs for smooth, rev-happy running. Wrapped headers subtly take the edge off the bright paint and perfect level of finish and the shortened muffler adds a slight hint of Tracker and helps with the visual balance.  Lights and indicators are miscellaneous bargains from bike shows and eBay and look about right.
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    OK this might not be a full-on build with stacked-dime Tig welding, Inconel exhaust and machined unobtanium swingarm but with the planning stage being so meticulous, Simon and family have put something together that wouldn’t look out of place in Kawasaki’s 2015 retro range of new bikes.
    In case you’re wondering, Simon isn’t a fighter pilot, these pics were taken by Neil Sterry  at the Jet Age Museum, nice touch.
    via the bike shed

    VIKTORY Z200


    VVT z200 1
    Viktor Van Trimpont (fantastic name) is an amateur builder from Belgium who’s on the verge of going pro. At 18 years of age, he went to study interpreter Spanish-English at university, but soon realised it wasn’t for him and chose archeology instead.
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    Viktor is obviously drawn to older things as it was about this time that he started buying old motorcycles, fixing them up and making them look pretty damn cool.The bug first bit when he got his hands on a Yamaha TTR125. It went like stink but looked like it too, so he fixed it up, restored it too it’s former glory, and was surprised to find he made a small profit too. The seeds were sown…
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    For a while, Viktor was content fixing and restoring bikes, but then realised he was more interested in making something unique. Not just fixing bikes, but making them look ‘bad ass with real personality.’ One of his first projects was a pig ugly kawasaki Ltd 305, a bike that rode ok just as long as you never caught a glimpse of your reflection in a shop window . Viktor gave the bike a new colour scheme, new handlebars, and a flat track seat. Sounds cool, send us a picture Viktor.
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    The tipping point came when he discovered thebikeshed, BikeExif, Pipeburn, and great builders like Blitz, El Solitario and Valtoron.  Seeing so many stunning bikes out there inspired him to knock archeology on the head and sign up for a course in motorcycle technology, which Viktor is still doing today.  While on the course, he got hold of a ’79 Kawasaki Z200 with the idea of turning it into a flat tracker, but soon changed his mind and went down the cafe racer route instead.
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    The tank is from a Honda cb350 which Viktor sanded, polished and fitted to the Z200 without any problems. The handlebars were swapped for clip ons. On went new wheels, new tyres and a new exhaust.  Viktor says he didn’t give an angle to the exhaust because he feels the flatter line gives the bike a more classy look, naming Royal Enfield’s as his inspiration.  He then fitted a small headlight which he found at a bike show for 8 euros, and removed the gauges for a cleaner and more simple look. Most of the man hours went on the seat.  4 days non stop apparently. It fits perfectly, but then I guess it should after that amount of time!
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    Viktor says he wanted the bike to be simple and as small as possible, but he also wanted to make it look classy and ‘badass’.   With this brief in mind, he fitted the 8 Euro headlight almost between the front forks for a more aggressive look.  The seat was cut high at the back to make the rear light mounting look very raw on the frame. The controls on the handlebars are no nonsense and very simple, not even a light switch.  And he didn’t fit grips that match the seat because that would make the bike too ‘playful’ in his opinion.   The bike isn’t perfectly finished, but that was intentional.  Viktor wanted the bike to look raw and rough around the edges.
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    Viktor says he is  planning to make more bikes in the future.  Please do Viktor.  More like this please.  Small, simple, no fuss, yet achingly cool and full of attitude. We’d love to be blatting into town hunched over one of these.  Thanks for sharing with the shed.
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     via PIPEBURN

    L’infrarouge à l’aide des techniciens de BMW Motorsport

    14_BMW_pitstop


    La technologie a de plus en plus d’importance en sport auto, et le DTM n’échappe pas à la règle. Les techniciens disposent désormais de moyens de plus en plus sophistiqués pour mieux comprendre le fonctionnement des voitures et leurs contraintes inhérentes.
    BMW s’est penché avec beaucoup de précision sur les températures, que ce soit celle des pneus, des freins ou des moteurs. Pour la préparation des BMW M4 DTM, il était important que les ingénieurs puissent appréhender au mieux les zones où les températures sont les plus extrêmes.
    Dans cette optique, le staff technique de BMW Motorsport a utilisé des caméras infrarouges et la firme munichoise a publié des images thermiques, filmées pendant les pitstops de la M4 et le départ depuis le stand, avec des températures de 800°C pour les freins carbone, de 80 à 100°C pour les pneus –grâce à des couvertures chauffantes- durant les pitstops, alors que les pilotes dans le cockpit endurent des températures pouvant monter à 60°C.
    Timo Glock (BMW MTEK) : « Je peux confirmer d’après mon expérience personnelle que les températures dans le cockpit de la BMW M4 DTM peuvent parfois être très élevées, ce qui exige de la part des pilotes une condition physique énorme. Je trouve fascinant la façon dont les images thermiques illustrent bien comment la chaleur est générée dans la voiture. Malheureusement, les fans qui sont sur le circuit ne peuvent voir ce qui se passe à l’intérieur de la BMW M4 DTM. Donc, je suis sûr qu’ils vont vraiment aimer ces images et ces vidéos. »

    Born Free 5