Constructing a 4.4 liter J.A.P. V8 bike from scratch


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Pavel Malanik doesn’t customise bikes—he builds them from scratch. We kick issues off this week together with his newest creation, a classic bike with a hand-crafted J.A.P. 4.4 liter V8 engine. We additionally profile a Suzuki GSX-R1000 and a Honda XR600R from Italy, and the restricted version Mickey Mouse Vespa Primavera.

Pavel Malanik’s 4.4 liter J.A.P. V8 motorcycle
Pavel Malanik’s 4.4 liter J.A.P. V8 bike John A. Prestwich & Co (or J.A.P., as they’re extra generally recognized) began making bike engines at the beginning of the twentieth Century. You’ll have seen a few of them round—most notably in HRD (who later turned Vincent), Brough Superior, and Triumph bikes. J.A.P. has a wealthy racing heritage, but in addition made plane engines throughout WWII, which is the place the story of this incredible creation begins.

Pavel Malanik’s 4.4 liter J.A.P. V8 motorcycle
This can be a J.A.P. V8-powered bike that was constructed fully by hand. Its creator is Pavel Malanik, a toolmaker from Czechoslovakia who has been working with bikes for nearly half a century. Being a talented machinist implies that Pavel could make something out of steel.

He combines his excessive mastery of machine work and fabrication together with his love of bikes—and the outcomes communicate for themselves.

Pavel Malanik’s 4.4 liter J.A.P. V8 motorcycle
Along with bikes, Pavel has a penchant for early flying machines. The engine inside this bike is a hand-built recreation of J.A.P.’s 4.4 liter V8 plane engine. No, that’s not a typo—Pavel made this engine himself after taking a visit all the best way from his residence in Czechoslovakia, to the Science Museum in London.

The museum homes a surviving instance of the J.A.P. V8, so Pavel was capable of take measurements and pictures of the engine’s interior workings earlier than diving in and constructing his personal. Did the museum truly let him take aside a bit of British aeronautical and engineering historical past? Effectively, no—however they didn’t must.

Pavel Malanik’s 4.4 liter J.A.P. V8 motorcycle
Some industrious and forward-thinking folks on the museum had truly determined that their J.A.P. V8 would higher serve the general public in the event that they lower elements of it open. This not solely made for a way more fascinating exhibit, nevertheless it meant Pavel may get in there and research the engine’s internals.

The subsequent problem that Pavel needed to overcome was the truth that the J.A.P. V8 was by no means truly fitted to a bike. Positive, it was in planes and even just a few vehicles, nevertheless it was by no means supposed to be a two-wheeled type of transport. This meant Pavel additionally needed to create every thing else, not simply the engine.

Pavel Malanik’s 4.4 liter J.A.P. V8 motorcycle
A tubular metal body cradles the lengthy engine and transmission, with a double-chain last drive. The lubrication system is handmade too, together with the gas and oil tanks. Completed in gray paint with period-correct nickel plating, we simply love every thing about this. The result’s a surprising and well-crafted engineering marvel. [Via]

Suzuki GSX-R1000 café racer by Francis von Tuto
Suzuki GSX-R1000 by Francis Von Tuto Since shifting again to his homeland of Florence, Italy, from Australia, Francis Von Tuto hasn’t wasted any time getting caught into one other customized construct. This bare Suzuki GSX-R1000 is the primary undertaking he’s accomplished since settling into his new workshop, and it’s a looker.

Like his earlier creations, Francis began with a contemporary bike and made a slew of modifications and visible upgrades. A 2004-model GSX-R was chosen, arriving at his store in a reasonably authentic situation. Okay, it had been barely crashed—however that made all of it the better to eliminate the manufacturing facility fairings, for the reason that injury was purely beauty.

Suzuki GSX-R1000 café racer by Francis von Tuto
With solely 20,000 km [12,427 miles] on the odometer, and being the final Gixxer with 170 hp and no traction management, the previous Zook nonetheless had loads of life left in it.

“The advantage of constructing a particular primarily based on a contemporary sport bike, is that you simply don’t must rebuild the engine,” says Francis. “You’ve already received loads of horses and superb ridability with out the necessity of a front-end swap or wider rims, higher suspension, or brakes. Simply braided traces and a very good set of tires will do.”

Suzuki GSX-R1000 café racer by Francis von Tuto
Nonetheless, in typical Von Tuto model, Francis didn’t cease there; as an alternative, he determined to construct a stripped-down café racer. For this, he fabricated a brand new entrance part utilizing a 4.65” LED headlight, customized bracketry, and a fiberglass biking fairing that appears very Norton Manx-esque. He then refitted the manufacturing facility dashboard, together with a brand new set of clip-on handlebars for a really sporty appear and feel.

The tank is inventory, however with its customized Mercedes AMG-inspired paintwork, it appears so much higher. The GSX-R1000 was designed to be a sportbike, so the fairing often hides some somewhat unattractive hoses and radiators. Francis made some customized radiator shrouds which not solely cowl these up, however look nice too.

Suzuki GSX-R1000 café racer by Francis von Tuto
The unique subframe was comprised of square-section aluminum however Francis determined to interchange it with a tubular unit, lined by a customized fiberglass tail part. We love the weather of the previous Kawasaki Z-series ducktail included within the rear finish—and Francis has made a mildew for it too, so anticipate to see it once more on his future builds. The seat was upholstered by BF Tappezzarie, Von Tuto’s trimmer of alternative.

Suzuki GSX-R1000 café racer by Francis von Tuto
As talked about, Francis didn’t must do any engine work however the bike did come to him with a full titanium exhaust. The muffler was dented and scratched, so he did away with that, chopping the tip of exhaust and adapting an Arrow muffler to suit.

Plenty of bare sportbike conversions are a swing and a miss, however we predict Francis Von Tuto has hit one more residence run. [Francis von Tuto | Images by Rafael Montañes Ruiz]

Honda XR600R by GPgarage Moto
Honda XR600R by GPgarage Moto In the event you’re into previous Baja and desert racers from days passed by, you would possibly already know GPgarage Moto—the bike division of Italy’s GPgarage. This unbelievable Honda XR600R racer is the newest construct from their workshop in Castelnuovo del Garda, close to Verona, Italy. It’s large, it’s pink, and we love what they’ve performed to it.

GPgarage’s Matteo Gualandi isn’t any stranger to Honda’s venerable XR, having constructed quite a few Baja replicas previously. Nonetheless, for this construct, he needed to construct one thing contemporary for himself. One thing that appeared to the longer term, however revered the previous.

Honda XR600R by GPgarage Moto
“After numerous replicas, lastly free from any historic constraints I made one to my liking,” says Matteo. “Impressed by the Baja races, it’s the results of entire days spent sifting by way of the photographic archives of the American races of the 90s to seek out inspiration.”

Constructing on the huge quantity of technological enhancements folks have made to previous XRs through the years, Matteo was capable of infuse this large thumper with efficiency. The engine was stripped down and rebuilt with an HRC 628 cc large bore package. Operating a Keihin FCR41 flat slide carb, a entrance fork-mounted oil cooler, and a lightened flywheel, this Large Purple has much more poke.

Honda XR600R by GPgarage Moto
The customized exhaust is a murals with twin pipes (one for every exhaust valve, as is the best way with Honda’s large singles) snaking their approach by way of the body. Terminating with a pair of 25-year-old Vance & Hines mufflers, it appears extra like one thing you’d discover on a two-stroke. Matteo assures us that the period-correct half truly will increase the airflow over the unique.

A transparent Clarke gas tank was fitted, together with rebuilt entrance and rear suspension. A stable HRC-style 270mm entrance brake disc with stainless-steel braided traces supplies extra efficiency and really feel.

Honda XR600R by GPgarage Moto
There are contemporary Acerbis plastics throughout, and a grippy cowl over the inventory seat base. Along with the pink body, black swingarm, wheels, and engine, the GPgarage XR appears like a totally fashionable recreation. Moose Racing handlebars, an Acerbis bash plate, and a few case savers spherical out the construct.

Seeing because it’s alleged to be a racer, all of the lights had been eliminated (bar the taillight) with a slew of customized CNC elements everywhere in the bike. The ultimate touches are the stickers, which add to the 90s vibes. If we may begin the massive boy, we’d trip the heck out of it. [GPgarage]

Limited edition Disney Mickey Mouse Vespa Primavera
Vespa x Disney Mickey Mouse Version Bike EXIF’s employees aren’t any strangers to the world of Vespa—they had been as soon as the commuter of alternative for each Chris Hunter and Wes Reyneke. We even have it on good authority that Rough Crafts’ Winston Yeh commutes on a Vespa (completed in black, in fact).

Right now we’re happy to share that Vespa has teamed up with an equally iconic model to provide a restricted version scoot. It’s one other collab that no person requested for, however that we’re glad occurred. That is the Disney Mickey Mouse Version by Vespa, constructed to have fun Disney’s one centesimal anniversary.

Limited edition Disney Mickey Mouse Vespa Primavera
Few bikes are as iconic because the Vespa and few cartoon characters are iconic as Disney’s Mickey Mouse, so what higher strategy to have fun kawaii tradition than by combining the 2? The Vespa Primavera 50 cc and Primavera 150 cc are the fashions that can obtain Disney’s contact.

The restricted version run is only a styling train, however that isn’t a foul factor. The entrance fender has been coloured a daring yellow, which pops towards the black and pink entrance part. The pink inside panel, black seat (with inlaid Mickey Mouse signature), and black rear panel give off iconic Disney vibes.

Limited edition Disney Mickey Mouse Vespa Primavera
There are additionally refined sketch designs added to the entrance and rear panels. We might’ve cherished to have seen some wraparound Disney-themed hand heaters only for the memes. Then once more, the manufacturing facility mirrors do already seem like Mickey Mouse ears.

Each fashions shall be obtainable within the US in August 2023. The 50 cc shall be occurring sale for $4,699 and the 150 cc (which might be our alternative) goes for $6,049.

Limited edition Disney Mickey Mouse Vespa Primavera
Piaggo’s Michele Colaninno calls it “a tribute to creativity, creativeness, light-heartedness, and enjoyable—the very values which have at all times anchored Vespa.” However the true query is, does Mickey Mouse even trip a scooter?

In response to three completely different Disney shorts, considered one of which you’ll watch under, he certain does. [Vespa]


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