Mazda rotary sport/roadbike?

[FROSTY:Me]

Now THATS a racetrack. My gosh yes

[onearmedbandit]

I have a idea.....
Has anyone, or does anybody know of anyone, who has successfly put a 12a or a 13b mazda rotary into a sportsbike??

You mean like this?

[Gregd17]

You mean like this?

Yes that is cool. Same motor, But more the look of a sportbike. That motor in a CBR1000 frame and fairing. or something with that look.

[Sanx]

Now THATS a racetrack. My gosh yes

Cadwell Park in Lincolnshire. It's been tamed a bit since then, but the jump's (The Mountain) still there!

[Mort]

Yep - Cadwell Park - ridden it many times.... it really is fantastic.

[aerobubb1]

Here is some more links with the nortons including the new nrv588, shes a bit more than a polished up f1 its got variable intake tracts similar to the design mazda used when it won Le Mans with the rotary in the early 90s and a completly new internal engine cooling design, it has electric fans instead of the augmentor venturi type design they fitted to the exhausts to suck cooling air through the engine, sounds impressive anyway!
http://www.youtube.com/watch?v=VDngD...eature=related

and for the old norton watch the jap bikes get a proper hiding here!
http://www.youtube.com/watch?v=kBg86...eature=related

[Stormer]

You mean like this?

Would luv to hear that at full song!
Having owned an RX4 coupe and a 13B RX7, with those straight headers it would be LOUD.

[banditrider]

http://thekneeslider.com/index.php?s=rotary

http://thekneeslider.com/archives/20...ngine-sidecar/

[Mountlocal1]

Everything was good about them other than the fact that they would explode after about 20,000km

Sounds like you have never owned or worked on one... I rebuilt my RX3 and itd done 80000k last time I heard and still going strong...

Id go for a 10a out of an early R100 if you could find one. Im sure I heard of a guy that used 1 rotor/housing from a 13b with modified eccentric etc...

I can put you in touch with a few people in Hams and Tauranga that could help you out...

[Mountlocal1]

You mean like this?

Man that is trick.. Ugly but trick. Check out the cooling fans/radiator mounted under the bike...

[aerobubb1]

Not a mazda but heres my attempts a rotary motorcycles

http://www.youtube.com/watch?v=dOsCUtEE_W8

and this one is a friends one I helped out with
http://www.youtube.com/watch?v=6EAA9yAFU20

[F5 Dave]

Can’t believe this thread is still going.

My experience with Mazda rotaries is limited, but it doesn’t need to be much more advanced to looking at one on a mate’s floor & giving it a trial heft.

Heaavy!

Man it looks like a car engine. . . .oh wait.

Or should that be Oh weight?

So why would you bother trying to fit it in a bike? With all the paraphernalia fitted it would be ridiculous.

The Norton was porpoise built as a bike engine, but they were fighting an uphill battle against noise & overheating & that was on race noise regs rather than street ones & traffic jams. The JPS replica road versions confirmed that it was bordering unfeasible with early CBR600 performance.

A car engine is a non starter for a sportsbike.

If you want alternative power & great power to weight you need look no further than a hot RG500 in a modern chassis, or Trinity Cheetah for less weight & up to 630cc twin, or one of the silly Cheetah triples.

[captain_andrey]

Wouldn't putting a large rotary engine in a bike create insane amount of inertia? I know by the end of world war 1 rotary engines in planes basically stopped them from turning right. Due to the gyroscopic effect, any applied torque was was shifted at 90 degrees off. EG pull stick = roll left. Killed a lot of pilots.

[F5 Dave]

Haha nice

No different type or Rotary. Google it.

That would be cool though. Watch out putting the sidestand down, you may lose a leg!

[captain_andrey]

OK I'll trust you on this. I dont actually have a clue about how the modern rotary works. But as long as there is a large rotating mass and no counter rotating mass the gyroscopic effect will still exist.