kiker14

Hi All,

I was driving home yesterday (1 hour commute) and was thinking about how many times my rotors are spinning, and then I go to thinking about how many times they have rotated in total, and I'm estimating somewhere around 90 MILLION times.

Here's the math, feel free to call me out on it (yes, I rounded off and used some assumptions)...

Initial data:
Total miles on car = 45,000
Average MPH = 30 (this is probably too high, but makes for easy math)
Average RPM = 3,000 (output shaft RPM, not rotor RPM) - I know we often are driving well above that, but think of all the time spent at stop lights, in traffic, etc. idling at ~1,000 RPM

Conversions:
45,000 miles / 30 mph = 1,500 total hours
3,000RPM * 60 = 180,000 RPH (rotations per hour)

1,500 total hours * 180,000 rotations per hour = 270,000,000 lifetime output shaft rotations

3 output shaft RPM = 1 rotor RPM

therefore, 270,000,000 / 3 = 90,000,000 rotor rotations (each rotor!)

Pretty amazing when you think about it that way...

9krpmrx8

iTrader: (46)

Simply amazing.

bladeiai

iTrader: (1)

It is really rather amazing, and if anyone hasn't watched the videos from Mazda on what goes into making these engines it's worth taking a look at:
How To Make a Rotary Engine

monchie

That's good...

godesshunter

Cool video. I hadn't seen that one yet.