Rotor tip speed.

 

Feet per minute is calculated the same by multiplying the circumference of the roatry chamber base circle in ft by rpm.
The limit is hardly 2500 orr 3500 fpm however, as thee is no acceleration and deceleration to put the enormous strains on the bearings.The limit there would probably be the fpm in which the surfaces could carry lubricant between them. As a guess I would say 8000 fpm.

 

This thread amuses me.

For what it's worth, my Element was a 5MT, and in 5th gear, gained 20 MPH per 1K revs. 3K at 60, 3.5K at 70, 4K at 80. I test drove a first-generation Scion xB back in '06: I noted that it was the same.

On the other hand, at 75 mph, my Ninja is running happily at 5500 RPM. At 75, my wife's lil Ninjette (a 250cc Ninja) runs at almost 10,000. Mine redlines at 11,000, hers at 13,000. They have smaller pistons, and short strokes, but otherwise aren't terribly different than any car engine. Mine (a Ninja 650R) is a DOHC fuel-injected parallel twin.

With a sportbike in the garage, I have no need for a car to go fast! The 650R will hit 60 in under 4 seconds A slow Fit is perfect... and gets almost the same mileage. (45 mpg or so under most conditions)

 

wow you brought an old thread back from the dead! hahaha

 

West Texas.

 

Going to the beach from Orlando = driving 100mph

 

slowing down may be a good idea.

 

^^^ the op doesnt have a fit anymore lol

 

The highest I get up to anywhere in town is maybe 75, and that's if I'm trying to pass someone on the one mile highway I take on part of my commute to work. The rest of the time I'm driving along at 65 MPH closer to my house, and around 45 when I get closer to my work. I knew the MT reved higher, but I also knew the MT would be alot more fun to drive than the AT. Besides, paying 22 bucks for a fill up is awesome anyway.

 

BFD. My Honda N600 car turned 5000 rpms at 70 mph. I put 93,000 miles on it before I sold it. My R1100RT motorcycle turns about 4500 at 80, which is relatively low RPMs for a motorcycle engine.

 

.......

I suggest you never drive a Honda S2000. Typical rpm's on the highway are 3300 rpm at 60, and nearly 4500 rpm at 80. Very high revving engine, and designed to take it, as is the Fit's engine. The Fit with automatic transmission is geared a bit longer, giving roughly 2100 rpm at 60, and under 3000 at 80. By the way give the Fit engine a special gold star for quality: the overhead cams are driven by a chain, rather than the cheaper and very ubiquitous belt drive.

 

I hadn't realized that; replacing the valve train belt was an expensive bit of required maintenance on my last two cars (Nissan Quest V6 and Subaru Forester).

 

In CA this has gotten crazy. No one goes the speed limit. Highways are all 80+ and cities are usually speed limit +10 mph.


RE: the high rpm's changing your final drive ratio would probably help that situation. But i do not know of any mass produced FD gears, so it would probably be an expensive custom. IIRC your acceleration would suffer from this mod though.

 

Or run larger tires. I run 185/60R15 in the summer on my GD3 which brings my engine speed down 3% for any given road speed - but of course my speedo and odo are off 3% as well.