F1

> Load the link and press play. First you'll hear a 10-cylinder, 750

> horsepower Asiatech F1 engine being warmed up. Then it performs a

rousing

> version of "When The Saints Come Marching In", to the delight of

assembled

ROFL

https://www.nopistons.com/forums/pub...1047683894.gif how do they do that !? seems like it would be similar to playing a trombone.. with your foot

Here's how the magic was achieved (technical/musical details via F1

Racing

> magazine):

>

> As we all know, a V10 engine produces five combustions per revolution

at a

> frequency per second of 60/(5 x revs per minute), which equals

12/rpm.

> Therefore, to work out the revs you need to hit a particular musical

note,

> you multiply the note's frequency by 12. To play a 440Hz 'A', for

example,

> you need 5,280rpm. For 'C', use 3,139rpm, for 'F' 4,191rpm, and so

on.

>

> Asiatech's French technicians (the engine, despite its name, is

derived

from

> a Peugeot design) simply programmed their engine to run through the

various

> rev/note ranges in the correct sequence. The result is delightful.

And

think

> of the possibilities ÿÇô BMW's F1 engine, which howls all the way to

> 19,050rpm, could rip through the entire Hendrix songbook.

>

> Even better: imagine a massed NASCAR choir performing "The Star

Spangled

> Banner"! Being eight-cylinder engines, the frequency per second would

be

> 60/(4 x revs), which means you'd multiply the note frequencies by 15

instead

> of 12: 'A' would arrive at 6,600rpm, 'C' at 3,923rpm, 'F' at

5,238rpm,

etc.

Just control the throttle with the computer. No big deal these days...



Pretty cool idea nonetheless.

and for a 2 rotor ? what would the frequency multiplier be then?

The rx-7 choir!

A 20B has a wonderful exhaust note. I wonder what it'd sound like?

I can't get to it

I can't get that to load, someone please help!

:(