[OT, yet neato] hear an engine sing

[Joe.Doty@lcnetwork.com (Joe Doty)]

Imagine them trying to sell stuff like this on late night TV..."with all =
your favorite old tunes like 'Innagaddadavida', 'Sex Farm Woman', and =
'My Guitar Wants to Kill Your Mama'".  I'd SO pay for that.

Joe Doty
IT/Development
joe@lcnetwork.com=20

-----Original Message-----
From: Robbie Cotner [mailto:robw_z@yahoo.com]=20
Sent: Wednesday, December 18, 2002 3:22 PM
To: scirocco-l@scirocco.org
Subject: [OT, yet neato] hear an engine sing

Hey all, I got this=A0from the Datsun Z list, very=A0interesting.=A0 =
btw, the engine doesn't start "singing" until almost 30 seconds into the =
recording, so don't=A0get discouraged:
=A0
> Load the link and press play.=A0
>=A0
> http://astro.temple.edu/~kmr/Chauffe2.mp3=A0
>=A0
> First you'll hear a 10-cylinder, 750 horsepower Asiatech F1=A0
> engine being warmed up. Then it performs a rousing version=A0
> of "When The Saints Come Marching In", to the delight of=A0
> assembled pit staff and journalists.=A0
>=A0
> Here's how the magic was achieved (technical/musical details=A0
> via F1 Racing magazine):=A0
>=A0
> As we all know, a V10 engine produces five combustions per=A0
> revolution at a frequency per second of 60/(5 x revs per=A0
> minute), which equals 12/rpm. Therefore, to work out the=A0
> revs you need to hit a particular musical note, you multiply=A0
> the note's frequency by 12. To play a 440Hz 'A', for example,=A0
> you need 5,280rpm.=A0 For 'C', use 3,139rpm, for 'F' 4,191rpm,=A0
> and so on.=A0
>=A0
>=A0
> Asiatech's French technicians (the engine, despite its name,=A0
> is derived from a Peugeot design) simply programmed their=A0
> engine to run through the various rev/note ranges in the=A0
> correct sequence. The result is delightful. And think of the=A0
> possibilities - BMW's F1 engine, which howls all the way to=A0
> 19,050rpm, could rip through the entire Hendrix songbook.=A0
>=A0
> Even better: imagine a massed NASCAR choir performing "The=A0
> Star Spangled Banner"! Being eight-cylinder engines, the=A0
> frequency per second would be 60/(4 x revs), which means=A0
> you'd multiply the note frequencies by 15 instead of 12: 'A'=A0
> would arrive at 6,600rpm, 'C' at 3,923rpm, 'F' at 5,238rpm,=A0
> etc.=A0
>=A0
> Mark my words, someone will be getting rich at Daytona next=A0
> year selling a CD of NASCAR patriotic anthems. Send some of=A0
> the royalties my way.=A0


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