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‘Seven’ – LC Fabrications


Posted on January 19, 2016 by Andrew in Other. 32 comments

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Written by Martin Hodgson.

The saying “it’s in his blood” gets thrown around a lot when sons follow in their father’s footsteps. But Jeremy Cupp of LC Fabrications must have the blood of a thousand men, because to single-handedly create this masterpiece and do it from scratch takes skills surely not possible for one man to possess in a life time. But that is exactly what he has done in creating this Harley Davidson CAC factory speedway inspired machine from entirely handcrafted components and a drivetrain that is part Buell, part Ducati and with cog swapping courtesy of Triumph. Yes, really. Coming from a separated family, Jeremy had one father a welder and the other a machinist and from an early age he was building his own bikes.“Taking a pile of raw materials and turning it into something that can take you where you want to go – it doubled the spiritual act of riding a motorcycle and really got me hooked.”

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Bike of the Year… in January?

The end result after more than a decade of honing his craft has culminated (for now) into this one-off machine the man himself calls Seven. The build began in LC Fabrications typical fashion “I started as always with an engine and wheels” the engine I’ll get to soon but the wheels define much of the way the frame and suspension is built on such a project. The front is a D.I.D 23inch, the unusual size once fitted to a short run of Honda XR’s, while the rear is a 21inch Harley item. With the hubs and rims finished in coral green together they give the tall, narrow look of the early speedway machines and the multi-purpose rubber only adds to the timeless feel. Typical of speedway racers there is no front brake but the rear is a beaut, a Buell like perimeter rotor using two separate Jaybrake calipers and two separate master cylinders, the footbrake is used for primary operation while the hand brake allows the bike to be held in place on any incline.

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Being the tremendous fabricator he is the rigid frame is of Jeremy’s own construction and is a masterclass of welding perfection and impeccable design. Studying the images of this loop style frame, lugged and crafted from .120 DOM (drawn over mandrel) steel the lines are simple and yet the quality leaves you asking “how does he do it”. This was the first bike to be built-in the new LC Fabrications shop and wanting an upholstered seat to sit, as if floating, above his new frame Jeremy decided the new shop needed a sewing machine. In the past he’s used heavily tooled leather but with the new piece of equipment he taught himself to sew and knocked out this stunning solo seat. Beneath it is another incredible creation, a hand fabricated oil tank that on the other side of the seat is a custom airbox for the single carb.

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The tank, fenders and the rest of the sheet metal is all polished aluminium of Jeremy’s making, but the story behind it is best told by the man himself. “At AMD 2012 Robin asked about my square tank design on Old Black (Another LC Fabrications build) I told him that I didn’t know how to shape sheet metal so square tanks were all that I could do. When the article was published it seemed (to me anyway) to be written entirely on the fact that I could shape metal. This gave me the motivation to learn, and not only learn but to do this one as polished, so obviously no filler was used. I would like to thank Jo Cooper for answering all of my questions through that learning curve” and clearly the results show Jeremy is one hell of a fast learner!

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Seven is a spectacular build, but the engine alone is worthy of a cover story and only studying it for hours on end will you truly appreciate just what a feat this is. Sticking with the theme of the old Harley CAC the engine had to be a vertical single, but buying an off the shelf reproduction J.A.P engine or similar is just not the way Jeremy works. He did however remember that a few years back Chris Barber had made his own engine, known as the Desmohog, it used a Harley bottom end with Axtell Barrels and Ducati 900ss heads to create an American V-Twin with Italian Desmo Heads. Jeremy has adapted that idea and simply worked his magic to create one of the most impressive none production engines you’re ever likely to see.

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Just a little attention to detail…

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Those forks

A combination of Buell Blast bottom end for the single cylinder, a Ducati cylinder head, a Triumph gearbox and a whole lot of Jeremy Cupp brilliance result in this masterpiece. “The entire cam-chest was modified to use a series of idler gears to drive the lower belt pulley, and the Ducati cylinder head had to be heavily modified to take its place on top of the factory Buell cylinder.” That Buell is 492cc of Air-Cooled American but to get it to stand up vertically and not have a forward lean Jeremy back-halfed the cases and then ingeniously mated up a pre unit Triumph gearbox that he modified to use a hydraulic clutch slave from a late-model Triumph. Not only is this the marrying of three manufactures components, a mix of old and new, the work Jeremy has done to produce a functioning engine of this kind that looks so good is remarkable. The exposed belt drive will have Ducatisti fawning and the single exhaust is testament to Jeremy’s lifelong pursuit of welding perfection.

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The suspension, like the rest of the build, is a one-off Cupp creation and is simply mind-blowing. Jeremy wanted the springer look and it’s easy to see why, it suits so well the overall theme of the bike, but he also wanted a front end that handled well. So he set about engineering and building a unique creation that he calls a hydro-springer. The rear legs are Showa 32mm inverted items that have the springs removed so that they operate exclusively as a dampening component of the front end. The load is carried by the twin spring forward legs with the design ensuring spring and shock work together as if one. All the linkages and other componentry to make this possible were not only made in-house but as well as being extremely functional look a million dollars. For a select lucky few Cupp has decided to make a limited run in stock HD narrowglide configuration, get in quick!

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Jeremy rides his pride

The end result is a motorcycle that neither words nor pictures can truly do justice, but they give us enough insight to truly appreciate the unbelievable talents of Jeremy Cupp. For now LC Fabrications remains a one man operation producing one or two bikes a year. He has his own product line that is available around the world through a number of distributors and with the help of his wife and kids Jeremy packages up and ships off every single part that he has personally designed, manufactured and assembled. It’s fair to say that despite his fearsome talents he’s still got his feet on the ground and we can only wait with bated breath to see what this modern-day Renaissance man will produce next.

[Photos by Michael Lichter]








  • Donny Boy Jr

    Holy smoke this is a work of art!!!
    My all time favorite speedway bikes!!!

  • pony

    Goodness, that is a whole lot of talent mixed with a huge portion of creativity wrapped up in stunning design and fabrication.

    I love it.

  • Sweet baby Jesus!

  • I have seen this beauty in real life at the AIM show in Orlando and the pictures only tell half the story. I has a presence like few other bikes. You simply look at is it, stop and think, WTF is this bike? You might think Jawa or no wait that’s not right or maybe its a…and then you really start looking and realize this way more that the eye first takes in….fine work indeed! Work of art is small talk on this subject we are looking at now. Fit and finish is way over the top, design is like a factory, a good factory and best part is know one guy built this beauty.

  • Incredible to the last detail! Bike of the year in January indeed!!!

  • Jim Stuart

    We’re not worthy….

  • FQ2

    Incredible craftsmanship.

  • Scott

    Shiny

  • Jim Roberts

    a work of art….that has at last FORCED me to bitch’a bit. man when you see a bike like this, you really Need to Know more.
    please tell us what it weighs…some sort of performance specs.
    i’d really be interested to know how it compares to a standard blast or sr500 or royal enfield. some weight figures on anything that has a sport/performance vibe….been meaning to write this for the longest and this thing is just so sweet i had too finally put it out there. thank you

  • brownroundtown

    Exquisite. Truly. Talk about raising the bar….I think it’s just been slammed firmly against its stops.

  • Hardley T Whipsnade III

    Stunning ! That pretty much says it all . Absolutely stunning !

  • Bob Ratcaf

    We’ve had bobbers, cafe racers, scramblers and street trackers, it was only a matter of time before speedway bikes were the new inspiration. And boy is that sweet! Bring on a new wave of beautiful speedway bikes! Would be hard to beat this minta tho, especially with the amazing engineering gone into bringing the engine components together. What would the new genre be called? Streetway bike? Speedstreeter?…

  • lennard schuurmans

    Brilliant bike! Love the Bianchi inspired color combo. http://www.vintagedirtbikeparts.net/1959%20%20%20BIANCHI%20%20175%20%20%20TONALE.jpg

  • guvnor67

    I read, and I read, and cannot get my primitive head around what’s been done!!! I had a thought about a street legal Speedway bike a while back … But oh lordy! This man is a God, and this would, in my shell shocked oppinion be the best bike I’ve ever seen on this site!!!! Damn, and, um, damn!!!!! I think I need to go lie down for a while 🙂

  • Bike of the decade.

    • This bike really deserves some hi-rew photos……….no??

  • Fast2Furious

    Confederate apologists? Really?? I don’t care what kind of work they’re doing it
    has no place on this or any other legitimate website.

    • Motomanic

      I agree with both Mule and yourself and hence am clearly conflicted.

      • Fast2Furious

        On their website they sell “Dixie” themed apparel because it, “shows…our support for the last Army to Fight to Defend the US Constitution!”. Clearly I owe them an apology they aren’t traitors they’re patriots.

  • John_Tangeraas

    I would never ride this bike, I would have it in my living room just looking at it. Metal art at its finest.

  • Bultaco Metralla

    Stunning! Great craft, fine vision and unique engineering solutions with a unique style. One of the very best.

  • Andy Rappold

    I have no words for this build…its just amazing…Jeremy is the Godfather!

  • GUS

    Absolutely the best mechanical work I have seen. Way to go LC.

  • Junior Burrell

    The true insanity is how he came up with all the ideas and design.

  • the watcher

    Fuck, fuck, fuck, fuckity-fuck, fuck.FUCK! Nuff said.

  • the watcher

    Oh, and I’ve never seen a bike on here that I’ve simply wanted as much and I reckon it’ll be a long time before that’s no so.

  • NMlonghair

    This is so off the charts, I’m going home and set my bikes on fire! Congratulations Jeremy, move us with your wisdom!

  • Johnny VonGriz

    Game over!

  • Darrick B

    I want to pull a chair up next to this bike so I can sit and stare at it for hours, taking in all the details.

  • bjax

    I keep coming back to Pipeburn to see new bike posts, but I keep seeing this one from eight days ago.

    So not disappointed.

  • Kevin Rudham

    Wow – Bike of the Year settled and were only in February!