Michael Pardee wrote:
> I don't want to trigger another never-ending thread, but in research for
> another forum I stumbled across this essay on brake pulsations at
> http://www.powerbrake.co.za/download..._01_judder.pdf
>
> It seems to pull together the cementite issue with the issue of disc
> thickness variation and supports it with pictures. I've seen the individual
> pieces in various places but thought this did a good job of making sense of
> it all. There is also a good treatment of brake pad selection that mainly
> reinforces my preference for staying with OEM.
>
> Mike
>
>
>
dude, the moment they start talking about cementite, and getting it
wrong, they lose all credibility.

bottom line, honda disk hubs are ultra-lightweight. they elastically
distort when the lugs are tightened. if the torque is incorrect, the
disk starts to sit out of plane, and the brake judders. it's real simple!

metallurgical problems can exist, and they show disk cracking as one of
them, [but get that explanation wrong too], but cementite transformation
at normal braking temperatures is pure b.s.

i've permanently fixed this issue several times now on different civics
and most recently on my crx. simply apply a thin layer of antiseize to
the hub surfaces, torque in a 2 or more stage process and bob's your
mother's brother.

i've been thinking about this for a while, but i guess this article
ratchets things up my agenda - i must go to a junk yard and take some
pics of things to look out for in the disk brake department. there's
one thing particularly i want to show for cheap chinese disk castings.