New 220hp 690cc Twin Wankel Engine

[RustyTank]

Anyone else read about this? Here's the article.

https://newatlas.com/motorcycles/dual-rotary-crighton-cr700w-motorcycle/

This thing sounds like a beast.

[Cipher]

Didn't a Norton late 70s or 80s have a rotary.?
Always wanted to try an rx7 to feel the powerband.

Apparently its a tech dead end now though

[RustyTank]

The guy behind the Norton your thinking of is behind THIS bike in the article.

"Brian Crighton pioneered the use of twin-rotor Wankel motors in race bikes in the late 1980s. Working as a maintenance tech at Norton, he took a 85-hp, 588cc motor from a crashed Norton Commander police bike, and hotted it up into a 140-hp fire-breather with almost no initial support from the factory. When coupled with a Spondon frame, this twin-rotor beast ran rampant through several British championships, including the 750cc Supercup, British F1 and British Superbike championships, until it was banned from competition."

Open the link to the article and scroll to the bottom. There's a little 2 min video, Brian Crighton speaks a bit about it.

Didn't a Norton late 70s or 80s have a rotary.?
Always wanted to try an rx7 to feel the powerband.

Apparently its a tech dead end now though

[metalfab]

I have been watching the development of a new generation of performance rotary's that has rewritten how a rotary works. I wonder if this engine is that new tech. The bike sounds like a sweet ride.

[RustyTank]

I have been watching the development of a new generation of performance rotary's that has rewritten how a rotary works. I wonder if this engine is that new tech. The bike sounds like a sweet ride.

It certainly does doesn't it? And yeah, sounds like it may be the same wankel development you've been reading about. I mean, how many could there be???

Crighton claims that the engine has only three moving parts.
Also, here's a link to Crighton motorcycles home page, https://www.crightonmotorcycles.com/
The site says they're making only 25 of these bikes at roughly $100k a bike.

[alke46]

Sweet video.....I'd love to see one of these in person just to hear the sound vs. the other bikes on a track.

[GS1150Pilot]

Will it get fuel mileage along the awful scale of the RX8? Rotaries are thirsty.

[Grimly]

Will it get fuel mileage along the awful scale of the RX8? Rotaries are thirsty.

Being sold as weekend trackday toys, what owner will care about fuel consumption?

[Buffalo Bill]

About thirsty bikes, there's scuttlebutt about Motogp moving into low emission fuels. Plus a realistic look at the pollution level of electric vehicles, even for racing.

[GS1150Pilot]

Being sold as weekend trackday toys, what owner will care about fuel consumption?

I'd guess anyone doing racing where an extra pit stop means irretrievable time loss.

[Nessism]

Being sold as weekend trackday toys, what owner will care about fuel consumption?

None.............

[GS1150Pilot]

Hmmn ... since these won't be in F1 cars, maybe so. That said, fuel consumption in race vehicles is a valid issue in some forms of motorsport.

[dpep]

Will it get fuel mileage along the awful scale of the RX8? Rotaries are thirsty.

That was my deal killer for the rotary the first time around. You would need a drum sized tank to get a decent touring range.

It seems counterintuitive to me. It looks it should be more efficient--continuous motion in the same direction, fewer parts and less surface for friction losses. But mileage numbers were in two stroke territory.
...

[RustyTank]

Being sold as weekend trackday toys, what owner will care about fuel consumption?

I'd guess anyone doing racing where an extra pit stop means irretrievable time loss.

None.............

Hmmn ... since these won't be in F1 cars, maybe so. That said, fuel consumption in race vehicles is a valid issue in some forms of motorsport.

I think you're all correct. Some people won't care because of it's wow/toy factor and those who are seriously into racing/fuel consumption, etc., are going to see that as a possible issue...if it IS an issue, which is pure conjecture at this point.

I'm known as "the diplomate" in my home

[RustyTank]

Will it get fuel mileage along the awful scale of the RX8? Rotaries are thirsty.

That was my deal killer for the rotary the first time around. You would need a drum sized tank to get a decent touring range.
It seems counterintuitive to me. It looks it should be more efficient--continuous motion in the same direction, fewer parts and less surface for friction losses. But mileage numbers were in two stroke territory.
...

Interesting info. I had no idea rotary engine's were so fuel inefficient. Does the same go for bigger rotary engines in cars?