Comments on: Mazda Rotary Engine Motorcycle Finished

By: M.E. Nick

M.E. Nick — Sun, 11 Oct 2009 21:59:29 +0000

you should be able to get better than 6 mpg on this engine, are you using a carburetor or fuel inject…carburetors cause more wall quenching..especially in the 13B…

By: Domenique Hawkins

Domenique Hawkins — Wed, 17 Sep 2008 17:00:52 +0000

Well this is another awesome looking bike. The mileage could be extended if the engineers added the miller cycle & it would keep the engine cooler. To quite the bike down a turbo would really help along with getting the bike to 200 plus mph. Would love to see this bike in action.

By: gary

gary — Fri, 12 Sep 2008 07:48:01 +0000

wow that looks insane ,and yep i can see it making 250+hp!

and ive seen 20b turbos pushing 1400hp !!!!!

my next project is a 13b peripheral port turbo ……for my street car,not very streetable but im down for that .

By: Vitaliy

Vitaliy — Tue, 15 Apr 2008 05:07:10 +0000

Poor MPG on the rotary engine because, rotary have a very huge “piston” and very small stroke like a motorcycle engine. The face of a rotor is about four times bigger than face of a piston from Toyota supra, and that is from a piston from a big engine. When the rotary go for combustion, all the gas that went in, spreads every where on the face of the rotor, and it is almost impossible to ignite. Rotary needs more fuel to run at low rpm than a piston engine, but when it gets to a high rpm, the the fuel economy evens up with a piston engine, or sometimes it’s even better. But only on high rpm. Rotary engines are like motorcycle engines make a lot of HP but not much TQ, compare to what it should have.

And yeah, 13BT could make even 700HP, but it is not that easy, it takes a lot of cash to make it reliable.

Nice bike though!

By: SCOTTY

SCOTTY — Wed, 02 Apr 2008 17:45:11 +0000

MY UNCLE DRAG RACED A 2ND GEN NA CAR FOR A FEW YEARS.. HE MADE 500 HP AT THE WHEELS AT 9000 RPMS. HE TURNED A 1/4 @ 9.1 @147 ALL MOTOR HE CAME OFF THE LINE AT 9500RPMS AND CHANGED @ 14000 RPMS..