10 things we just learned about the awesome Crighton CR700W motorcycle

Almost every car enthusiast has at least one abandoned vehicle that they have fallen in love with and wish they could bring back. They also have cars that they would like to see abandoned, never to see the light of day again. Every now and then a beloved car or motorcycle makes a comeback after years of absence.

A Masters of Engineering was unveiled at the National Motorcycle Museum during a two-day event at the end of October this year. A fitting venue for the Crighton CR700W, which seeks to revive the rotary motor of motorcycles that was apparently lost in history. Brian Crighton, the mastermind behind the project, was on hand to talk and give details on the next bike. Here’s what we learned about the impressive Crighton CR700W, which is the product of a partnership between a rotary engine genius and rotary aircraft engine specialist Rotron Power.

The return of the rotary engine

Chrighton CR700W motor

via crighton motorcycles

The auto market has not seen a production vehicle with a rotary engine since the discontinuation of the Mazda RX-8 in 2012. This is set to change with Crighton Motorcycles bringing it back with its CR700W 220hp, 690cc bike. taunting the “ultimate track bike”. ‘

The design of the Wankel engine is considered one of the engineering near-failures of the 20th century. It was previously used in a handful of motorcycles, most notably by Hercules, Van Veen, and Norton, including Norton Commander, F1, Interpol 2, and Norton RCW588.

RELATED: Here’s What Everyone Forgot About Norton Motorcycles

Awesome track bike numbers


via motorradonline

The CR700W is designed and built primarily to tear up race tracks rather than ride the streets. The spec sheet is comparable to what you would find in a MotoGP motorcycle, with some even more impressive numbers. A 690cc twin-rotor motor generates 220 hp and 105 lb-ft of torque to propel the 285 lb bike. The combined weight of the engine and transmission is 95 pounds. This is the Moto3 weight with superbike power figures.

crighton CR700W racing

via crighton motorcycles

It should also be noted that the CR700W is neither road legal nor racing legal after the presses were banned in the mid-90s. Perhaps that is why they plan to build only a few. bike units?

A twelve-year-old bike in the making

Crighton Cr700w

via crighton motorcycles

The exterior appearance of the CR700W shows that it hasn’t changed much in over a decade. That’s because the bike has similar bodywork to the 2009 Norton NRV588, which was supposed to signal Norton’s return to the Isle of Man TT, only to disappoint fans. Regardless, Crighton continued to work on the project for the next twelve years in conjunction with aircraft engine specialists Rotron Power.

crighton new cr700w

via self-evolution

The extensive development resulted in an engine much more advanced than the Norton rotary engines of the 1990s.

RELATED: The Norton Commando Was One of the Best Motorcycles of the ’70s

A sum of Brian Crighton’s legacy

chassis CR700W 2

via crighton motorcycles

The CR700W will bring back memories of Steve Hislop riding the Norton 588 racing bike to win the 1992 Senior Isle of Man TT. The legendary motorcycles also brought victories to Trevor Nation and Steve Spray in the British Championship between 1989 and 1994. Brian Crighton, the mastermind behind the CR700W, is the same man who created the victorious Norton 588s by exploiting the failed ability rules. consider the higher power that rotary engines can produce from small displacement.

crighton chassis CR700W

via crighton motorcycle

The former racing champion and engineer says that at 73, the CR700W encapsulates the best of its engineering wisdom.

Specially designed exhaust

crighton exhaust CR700W

via crighton motorcycles

The CR700W features notable engineering advancements, including in-house molded and machined structural components, a never-before-seen internal cooling channel, and ultra-low friction silicon nitride ceramic apex seals. But an impressive addition is the innovation of Crighton’s exhaust gas ejection system.

crighton exhaust CR700W

via cycleworld

The system is made of titanium and Inconel and uses the rotary engine exhaust system to create a high energy vacuum through the engine core. The vacuum facilitates a continuous flow of air through the finned apex of each rotor tip, resulting in additional cooling of the air.

RELATED: 10 Things We Love About the Triumph Thruxton

Transmission and suspension

Chrighton CR700W chain

via cycleworld

Older rotary racing motorcycles seemed to suffer from weak gearboxes because they weren’t tough enough and struggled to absorb the incredible power produced by the rotary engine under racing conditions. The CR700W promises to solve this problem by using a bespoke drivetrain system that uses a quick release cassette, hammer ring, and a larger, finished gear group that promises increased durability. Additionally, it comes with a slip clutch from Nova Transmissions and an intermediate gear that reverses the engine to help keep the front wheel on the ground when accelerating and cornering.

CR700W crighton suspension and brakes

via crighton motorcycles

The bike comes with the option of premium Öhlins or Bitubo superbike spec shocks front and rear. A pair of Brembo Superbike monoblock brakes help riders confidently slow down the 220 hp monster.

Impressive power-to-weight ratio

Chrighton CR700W

via Crighton motorcycles

The 285-pound CR700W’s 690 cc rotary engine produces 220 hp at 10500 rpm, which translates to 319 hp per liter and 0.77 hp / lb. For context, most 1000cc MotoGP motorcycles make around 300bhp, with a power-to-weight ratio of around 0.714bhp / lb.

The bike’s power-to-weight ratio is also better than that of the super-powerful 326bhp Kawasaki H2R, which is quite bulky despite its high power figures. This shows the weight reducing forces of the rotary engine as it produces massive amounts in a small package. We can only wait and see how he fares against the big boys where it counts; on the track.

Phenomenal riding experience

Crighton Cr700w

via crighton motorcycles

The Crighton CR700W promises to provide an incredible driving experience. The vibrations will remain at a minimum even at high rpm because the rotary engine rotates in one direction, unlike reciprocating piston engines. According to former British Supersport Champion Mason Law, driving the CR700W felt like being propelled over an airplane runway in a fighter jet.

With low weight, plenty of power, a low center of gravity and no vibration, the bike will be as close to a 2-stroke era MotoGP bike as possible, only with more advanced technological features on board.

Heavy price tag

Crighton Cr700w

via crighton motorcycles

The CR700W’s impressive numbers come at an equally high price from a road bike standpoint. In the UK, bikes start at £ 85,000, or just over $ 114,000. For comparison, the 2022 Kawasaki H2R will set you back less than half that price at $ 49,400. Perhaps the closest superbike in terms of price is the Ducati Superleggera V4 which costs $ 100,000.

CR700W 02

via crighton motorcycles

Buyers can choose to upgrade their bikes with Öhlins or Bitubo shocks. In addition, they will have the option of customizing it into a street-approved bike or keeping it on track only as originally intended.

RELATED: The New Norton V4SV Is A Gorgeous British Superbike

Only 25 examples will be produced

Chrighton CR700W racing

via crighton motorcycles

According to Crighton, only 25 CR700W bikes will be built, and that could be due to the fact that they will all be built by hand by Crighton himself at Rotron’s headquarters. The bike’s chassis is raw, and mass-producing a completely modern design new chassis would require convincing a company that it can use it in production motorcycles.

crighton side CR700W

via crighton motorcycles

Therefore, the CR700W will most likely be a highly sought after collector’s item, with only a few dozen of them. Also, a third party can come in and produce replicas similar to a Kramer, except with a rotary engine.

Sources: crightonmotorcycles.com, cycleworld.com, kramermotorcyclesusa.com, hotcars.com

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