From dale_at_unofficialbmw.com Thu Mar 15 15:08:55 2001
Thu, 15 Mar 2001 15:08:55 -0800
From: Dale Beuning <dale_at_unofficialbmw.com>
Thu, 15 Mar 2001 15:08:55 -0800 (PST)
Subject: bedding brakes...
To: dfoster_at_serfware.com (David Foster)
Date: Thu, 15 Mar 2001 15:08:52 -0800 (PST)
Cc: dale_at_unofficialbmw.com ()

> Date: Wed, 14 Mar 2001 22:40:59 -0800
> From: "Sean Hester" <seanh_race_at_hotmail.com>
> Subject: Re: [E36M3] Bedding OEM Pads & Stock rotors
>
> >I've been following the discussion on bedding the PF90s. Should anything
> >different be done for a stock set up? The local shop nazi's have siezed my
> >car and will not give me a tech sign off for sears point without new rotors
> >and pads. In the interest of time I went ahead and went with a stock set
> >up
> >(pagid pads and OEM rotors). How should I break these in to ensure peak
> >efficiency by this weekend?
> >
> >thanks
>
> with stock pads the initial mating period should be a bit longer. hopefully
> 4-5 days maybe 200 miles. though, it's gonna be hard to get that doen by
> this weekend.
>
> i usually give the "hard stop and cool" thing a few more runs too. start at
> 30mph and go to 20. then work you way up (a minute cooling in between) to
> 70->20. with a total of maybe a dozen overall stops.
>
> there's two things you're supposed to accomplish with bedding. one is the
> mechanical process of letting the metal parts "mate". the other is a sort
> of "curing" that the pads need. being heated up and allowed to cool.
> (similar to heat cycling tires) pf-90 pads (most race pads) have already
> had the heating part done for you. that's why they're easier to bed.
> street pads usually don't. so you need to try harder and make sure to get
> enough heat into them during bedding.

                       |            Dale Beuning           |
                       |   email: dale_at_unofficialbmw.com   |

                       | web: http://www.unofficialbmw.com |
                        -----------------------------------