Drifter101

THAT THING IS MASSSIVE!!, but anyway... just do a 20B swap... or even better build a massive 4x4 with that huge avation rotary... the redneck inside of me would be proud of you

nonameo

you know what.... I just noticed something. that engine has very low compression. It looks like maybe 5:1? Why is that?

casio

i was talking to a guy that has a formula mazda at my work and he said that 1st, airplanes have such strict qualifications, you pretty much have to use what is already approved, but thats when i told him to build a rotary powered airplane. 2nd, he said the propeller can't spin at over 3Krpm, so there'd need to be a reduction gear to get all the useable power from the engine.
i'm not an aviator, just thought i'd share a few things, too.

Roy James

Hey, any real info on that big *** engine? Thanks.

BaitBonk

I can see it now.... slap a couple of those in a Big Rig and we have ourselves a new form of insanity ... Big Rig drag racing... rotary style That would be some crazy shizit

Chixican

iTrader: (1)

Here's a pic of the piston powered rotary engine... it looks like a regular radial piston engine, but there's a catch... Instead of the central shaft rotating the propeller, the shaft is stationary affixed to the plane while the entire engine pistons and all rotate with the propeller. Wierd huh? If you wanna learn more useless crap like that go here http://www.aviation-history.com/engines and look for the Gnome engine.

scathcart

Actually, there is a company currently making 2 rotor applications for marine use.

They come in three engine sizes, and three power sizes:
500 hp, 750 hp, and 1000hp, and all of these are 2 rotor.

Did I mention these engine are spark-ignition diesel?

Rotory

iTrader: (1)

whats the company's website that u are talking about scathcart?

RX7_ZRO

COOOOL!!! I want to put a motor using that big rotor in the Peterbilt I plan on getting!!!! As for that spinning engine thingy...I'm not getting near that it sounds entirely too wierd....

Liquid Anarchy

iTrader: (2)

That's a Radial engine, not a Rotary... as said before, a common misconseption.

Chixican

iTrader: (1)

Hmm.. perhaps you didn't look at the link or read my post properly. That IS a rotary engine becuse the premise of the design is that the entire engine block will rotate rather than just the propeller as in radial engines. Here's a couple of links directly to the theory's behind aircraft rotary engines. The third one will give you an animation incase you want to see how it works.
http://www.benncomm.com/ancient/rhin...nome/gnome.htm
http://www.aviation-history.com/engi...ary-theory.htm
http://www.keveney.com/gnome.html

Evil Aviator

These are pretty big.
http://www.rotarypowerinternational....t/580rot~1.pdf
http://www.rotarypowerinternational....t/580rot~2.pdf

Wankels are mostly used in experimental (ie homebuilt) aircraft, but the production TH-55 helicopter came with a rotary engine as an option.

They look the same, but the main difference is in the engine mounting...

Radial engine = Engine is attached to the airframe, and the propeller is attached to the output shaft. The propeller moves while the engine stays in place, as you would expect.

Rotary Radial engine = Propeller is mounted to the engine block, while the output shaft is attached to the airframe. The engine rotates along with the propeller, while the crankshaft remains stationary. This sounds stupid, but the engine had no electric starter or carburetor for throttle control. The power was varied with an ignition on/off switch, and the momentum of the engine would keep it rotating during its brief off period. The power could also be varied for fine adjustment with the mixture control.