lanky used our newssubmit to tell the following story about the speed of CD readers and writers.
With the current of CD Writers (and readers) getting faster, the question asked by users and makers also (See Plextor comments about greater the 40x writers) is how fast you can ge before you will see CD-Roms and CD-Rs spin before we find pieces of our beloved burnt backups splatted over the inside of our computer systems.
"CAV is for Whimps
To be able to publish ever increasing spin ratios, many manufacturers have resorted to CAV (Constant Angular Velocity), a method whereby the record is not rotated faster when reading inner tracks. Thus they can specify impressive spin ratios for outer tracks and sell more, but in reality the spin ratio for the inner tracks is only 37.7% of this value.
CLV is for the Tough Boys
A 64x drive using CLV would have to rotate the disc with 33,920 rpm when reading an inner track, exposing the hub of the disk to a tangential force of some 45 N/mm2. A point on the periphery of the disc will be moving with 213 metres per second, slightly more than half the speed of sound. Can the disc take that?
The answer is no. A powerful no.
At about 52x, i.e. 27,500 rpm, most manufacturer's CDs blew up in a rain of plastic particles, leaving their marks on the premises. The result was a pile of shimmering plastic chips."
For the whole article, check it out here.
Source: qedata
