Shattering CDs

Ever tried running an abrasive disc or wheel at higher than it's rated safe working speed. High cerifugal force (or is it centripetal force, my physics is getting a little rusty) resulting in disc burst. Same effect. Perhaps compact disc manufacturers should issue a safe working speed.

Thinking it through, why would a disc transport be manufactured to run a such speeds if it wasn't safe?

I am sure I have ripped hundreds of CDs at that speed, never had a CD shatter.  Although I have thrown a few at walls, different outcome.

I would have to guess that there was a defect/stress crack where the hole was punched in the center.

Do you think they "burn" them at slower speeds when manufactured?

-p

I should imagine they are simply imprinted at manufacturer point surely?

BTW, the CD had played normally in my (rather fussy) CDS2, so the hole can't have been too far out.

Yep, had a copy of Microsoft Office explode inside a CD-ROM drive. So really a "WTFWT?" moment. Add to the fact that it was about £450 for Office Pro as well at the time. 

And I classed the drive as a write off, so another £80 there.

Sickening sound though.

John

Its centripetal force. As a Physics teacher it annoys me that people go on about centrifugal force. No such thing.

Have to say though I've never known a CD explode, although some of them do vibrate a bit in the computer when ripping.

.....Batman

Sorry, couldn't resist.

M

Which brings up the questions; what maximum speed does the HDX rip at, and who would foot the bill if a CD explodes in it?  The record company could presumably claim that their product is only designed to be used at normal speeds.
In the case of the Microsoft disc, I would have thought that Microsoft have to allow for it to be read at much greater speeds than an audio CD.
As mentioned above the noise it makes while the remaining CD parts whizz round smacking the laser are quite impressive.

The drives in currently-shipping HDX / NS0x product can be easily cleaned of detritus by your retailer–I've only had to do this once in three years of distribution, for what it's worth....

Very interesting, so that's at least three exploded Cds in this tiny community alone.

 Possibly the industry's Last Ditch Copy Protect measure?

CDs are stamped rather than "burned" ...

Cheers

Phil

How does that work?  I know vinyl and tape, but honestly know nothing of CDs.

Although you will have answered your own question through the educative miracle of the internet - http://www.youtube.com/watch?v=LEnmSem8C-0 .

Alternatively - http://www.youtube.com/watch?v=_2Xytb84Zrg

(Advisory - may contain laboured humour)

Brilliant!