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Motorcycles BMW’s Next-Gen, Swingarm-Less Carbon Fiber Superbike

00:10  14 august  2020
00:10  14 august  2020 Source:   cycleworld.com

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We weigh in, then tear down the S1000RR M Package and begin the Suter swingarm and Alpha SBK pivot kit install. - Part 5 - SBK Radiator Test Fit, Carbon Fiber Bodywork - Продолжительность: 13:37 SuperbikeUnlimited.com 4 730 NEW REARSETS on the Carbon BMW S 1000RR!!

The BMW HP4 Race is one of the most exclusive and powerful superbikes ever built. Based on the S 1000RR it costs €80,000 (,000 in US), and it features a carbon fiber frame, wheels and World Superbike specifications. Every unit is handmade, and we got the chance to unbox one and fire it up.

When it launched the S 1000 RR-based HP4 Race three years ago, BMW proved the carbon fiber technologies it has honed in racing and road cars could make the leap to two wheels. It’s only a matter of time before a more mass-produced carbon sportbike reaches showrooms, and a new patent from BMW hints that it could be even more advanced than its predecessor.

a person flying through the air while riding a motorcycle: Overlaying the BMW patent drawing over a current S 1000 RR gives clues to what the unit could look like. © Provided by Cycle World Overlaying the BMW patent drawing over a current S 1000 RR gives clues to what the unit could look like.

As a reminder, the HP4 Race was BMW’s range-topping superbike back in 2018, weighing in at just 377 pounds wet thanks to a carbon fiber frame, bodywork, and wheels. Its dry weight was an even more impressive-sounding 322 pounds, and thanks to an engine spec that was similar to the firm’s WSBK machines it achieved 215 hp. On the downside, it cost $78,000, could only be used on the track, and that exotic motor needed to be replaced every 5,000 kilometers, at a cost of around $20,000. That fun didn’t come cheap.

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Color: Carbon Fiber Swing Arm Spools. Next . Customers who bought this item also bought. Page 1 of 1 Start overPage 1 of 1. This item 2015-2017 BMW S 1000RR Carbon S5 Swingarm Spools - Carbon Fiber - Sliders - 710-0339 - MADE IN THE USA.

for BMW Swingarm Cover: for BMW Swingarm Cover. Motorcycle Tank Cover Fairing kit in Carbon Fiber For BMW S 1000RR ,S1000R 2015-2018 Twill glossy weave.

Fast-forward to 2020 and BMW’s basic, road-going S 1000 RR manages 205 hp, combined with normal service intervals and engine life, but in terms of weight its 434-pound mass is still significantly more than the HP4 Race. It’s safe to say BMW isn’t going to allow its latest-and-greatest superbike be overshadowed by a version  of its predecessor for long, so a carbon fiber-framed lightweight derivative is sure to appear at some stage in the model’s life.

a close up of a map: Doing away with a conventional swingarm pivot, BMW’s patent shows a carbon fiber struction acting as the spring and support for the rear wheel. © Provided by Cycle World Doing away with a conventional swingarm pivot, BMW’s patent shows a carbon fiber struction acting as the spring and support for the rear wheel.

One element of the old HP4 Race that wasn’t carbon was its swingarm. While its closest rival at the time, Ducati’s 1299 Superleggera, used the material for its entire chassis, including the swingarm, BMW stuck to aluminium for the suspension. Now the firm’s latest patent suggests it’s not only planning to move to a carbon fiber swingarm but to do away with the conventional swingarm pivot altogether.

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Painted: Yes. Material Type: Carbon Fiber . Model & Year: BMW S 1000RR 2009-2018 /HP4 amd S1000R. Part Name: Swingarm Cover. Lower Side Panels Belly Fairings For BMW S 1000RR 2009 - 2014 HP4 Full Carbon Fiber 100% Twill.

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a person flying through the air while riding a motorcycle: Overlaying the BMW patent drawing over a current S 1000 RR gives clues to what the unit could look like. © Ben Purvis Overlaying the BMW patent drawing over a current S 1000 RR gives clues to what the unit could look like.

The new carbon BMW frame design, pictured above, looks basically like a hardtail; the rear suspension—it can’t really be called a swingarm as it doesn’t swing—is molded into the main chassis itself. However, BMW isn’t planning to go without rear suspension. Instead the idea is to use flexible properties of carbon fiber to allow the rear wheel to move vertically, but not side to side.

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BMW’s patent explains that by arranging four layers of carbon fiber above the rear arm, and another four below it, all with the fibers running longitudinally, it can create a flexible component that acts as a spring. Fiberglass and carbon fiber leaf springs have been around for decades—they were pioneered by the Chevy Corvette in the early ’80s and remained a key element to the car until the latest generation was introduced this year—and in this instance the leaf spring is basically the swingarm itself. An upper shock mount is still visible on the frame, suggesting there will still be a conventional strut to damp suspension movement, and perhaps an auxiliary coil spring to allow preload adjustment, but the main suspension job is performed by the flexible rear arm.

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Motobike Make: BMW . Model Name: S 1000RR. Material Type: CARBON FIBER . Item Weight: 1kg. Item Type: Covers & Ornamental Mouldings.

BMW has already fit a carbon fiber main frame to its HP4 Race model, but it used an aluminum swingarm. © Provided by Cycle World BMW has already fit a carbon fiber main frame to its HP4 Race model, but it used an aluminum swingarm.

If any company can pull off a design like this, it’s BMW. The firm is undeniably a   world leader in carbon fiber technology, having pioneered mass-production techniques that have allowed carbon vehicles to be made relatively quickly and cheaply. Both the i3 city car and i8 supercar have all-carbon chassis, and several other BMW car models have structural carbon components including roof panels and pillars.

a close up of a map: Doing away with a conventional swingarm pivot, BMW’s patent shows a carbon fiber struction acting as the spring and support for the rear wheel. © BMW Patent Drawing Doing away with a conventional swingarm pivot, BMW’s patent shows a carbon fiber struction acting as the spring and support for the rear wheel.

While the HP4 Race was a handmade machine, BMW has already patented methods to mass-produce motorcycle frames from carbon fiber. Whether the innovative flexible rear suspension makes it to the next S 1000 RR-based carbon bike remains to be seen, but it’s clearly under serious consideration.

BMW has already fit a carbon fiber main frame to its HP4 Race model, but it used an aluminum swingarm. © BMW BMW has already fit a carbon fiber main frame to its HP4 Race model, but it used an aluminum swingarm.

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