Ah Yes, Abd;
        Another one comes to mine.
        How about bypass caps.
        Lou

> Subject:      Re: [DC] Calculating thermal dissipation of external plane
> heat s ink              area
>
> At 08:02 AM 11/17/99 -0800, Scott Decker wrote:
> >I would like to share
> >a comment I heard a looong time ago regarding vehicle brakes. One of the
> >guys that worked for my father said, "Why would you turn the drums or
> smooth
> >the surface of those brake drums and disks? With all those deep scores
> and
> >valleys, look at all the extra surface area you have for friction"...
> With
> >that being said, sometimes it's all from a point of view...  BTW, he was
> >kidding.
>
> Brakes are turned when one installs new pads because the new pads do not
> match the scores in the drum or disk. It *might,* in fact, be somewhat
> more
> effective if the mating surfaces were matching but not "flat," but that
> would be difficult to create by turning....
>
> Back when I had plenty of kids and little money, and I did my own brakes,
> I
> did not turn the drums; I just installed new brake pads. My theory was
> that
> the drums would quickly wear the pads to match, and vice-versa, and the
> brakes, in fact, did work as I would have expected. That is, there was a
> minor loss of braking power when the pads were new, which quickly
> returned.
> Never had a problem.
>
> The reason a shop won't do this may have more to do with legal and
> liability issues than with safety per se. If there is a slight loss of
> braking power, and then there is an accident, the brake shop could be
> blamed even if the loss of braking power was basically irrelevant to the
> accident. How could the matter be proven one way or another? So if the
> drums are turned, the shop is safe. Besides, they get paid for it.
>
> Obviously, there may be other issues as well, not so easy to predict from
> my desk....
>
> [log in to unmask]
> Abdulrahman Lomax
> P.O. Box 690
> El Verano, CA 95433
>