i have a very hard time beliving someone can make a rotor 1/3 the weight (3 pounds) and still keep it from colapsing under the forces.

Well, no doubt it would be on an NA engine.

a monster pp engine.. yaay! 3lb rotors on a a pp monster engine, 0-100mph in 5 seconds. :)

A monter port AND peripheral port engine? Yeah woooo!!!! :p:

This is craziness...:)

Btw...not to be an ASS but anyone else remember what a Formula 1 engines idle speed is ;). Lets just say it's not 1500rpm if you catch my drift.

Anyway it'd be crazy if you guys did do something that revs to more than 14k with proof, I'd love to see that...and more importantly HEAR IT (dear lord)!

Kiyo

P.S
good luck

I hope there is a scatter shield installed on the cars that rev that high. I wouldn't risk losing my feet just because I wanted to rev higher.

Unless you have some serious oil pressure and new bearings, the currently available bearings will self destruct somehwere over 10000 rpm. This is assuming the rest of the engine stays together.

Yeah, unless it just ends up as a testbed dyno motor... the thought of having a piece of metal slingshotting off at some godawful high RPM is frightening to me too.

I *think* needle bearings are available that would allow more RPM before self-destructing. I've heard about long-term reliability problems using needle bearings for things in rotaries, but for short term... maybe? Either way, the oil system is getting redesigned from scratch, so... well. :D

I wonder if you can have an oil filter in *front* of the scavenge side of a dry sump pump. It would be nice, for development work, to not have to worry about the pump ingesting ground-up bearings. ;)

i think you have a lot more to worry about than just the oil pump if your bearings are desintigrating.

Well, the thinking was that this dyno mule would be getting rebuilt every couple hours of runtime anyway, and would eat any number of kinds of parts... so it would be nice not to have to worry about killing off a dry-sump pump too.

That sounds a lot like the VRIS system mazda used on the KL-03 Engines found in the Ford Probe GT, MX-6 LS, and Millenia (V6).

I have a spare intake manifold for that engine if you wanna look at how it works. $10 plus shipping and I'll send it to you. Mazda made the VRIS to do exactly that, provide low end torque and high-end HP.

Do a google search for "How VRIS works" or the like and you'll get gobs of info from Probe-people.

*grin*
~Brad

Has anyone considered say... 3-piece composite rotors for weight reduction? And what about more rotors that are smaller (thickness)? And what about shutters on the ports, say a slide type shutter that intersects the apex seals path on tangent? That would allow port timing to change with RPM as well as port area. Just a few of the ideas I've had for this kind of insane RPM design. :confused: