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Re: [Healeys] BJ8 Front Wheel Noise

To: Bob Spidell <bspidell@comcast.net>
Subject: Re: [Healeys] BJ8 Front Wheel Noise
From: Alan Seigrist <healey.nut@gmail.com>
Date: Thu, 22 Aug 2013 11:15:38 +0800
Cc: "healeys @autox.team.net" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <008401ce9edf$9f09ac70$dd1d0550$@net> <5215817C.3090700@comcast.net>
Ferodo pads are awesome, but messy!  I like Greenstuff or Redstuff the best.


On Thu, Aug 22, 2013 at 11:11 AM, Bob Spidell <bspidell@comcast.net> wrote:

> The disk is picking up the pad, slapping it against its pins and/or the
> cutout in the caliper, then letting it drop as it rotates.  There's some
> debate as to whether rotors can 'warp' (Carroll Smith was adamant that
> 'warping' was caused by uneven buildup of pad material on the rotors).  At
> any rate, turn the rotors and try a different pad. I've had great results
> with Ferodo pads--better stopping as well--but some of the modern ceramics
> may be even better.
>
> Bob
>
>
>
>
>
> On 8/21/2013 7:30 PM, Mike Garvey wrote:
>
>> My front wheels make a clicking noise as I drive; it's reminiscent of my
>> childhood days when I put a playing card to flap against the spokes of my
>> bicycle.
>>
>>
>> My tentative diagnosis is that it is the disk pads that get "pulsed" once
>> every time the wheel rotates and the fit of the pads is loose enough that
>> they "click".  The clicking stops when I apply the brakes.  Suspecting
>> that
>> perhaps the disk was the root cause (since the rolling resistance varies a
>> bit as I rotate the wheel by hand), I measured the run-out of the
>> (outside)
>> surface of the disk; it measures 0.005 inches, peak-to-peak.  The BMC
>> manual
>> says that run-out should not exceed 0.004 inches. It's not easy to measure
>> the disk thickness, so I've not done that yet.
>>
>>
>> The disks appear to have been replaced during the restoration (by the
>> former
>> owner) about 2 years ago.  I recently installed the shims that Moss sells
>> to
>> alleviate brake squeal (which are very effective I find).
>>
>>
>> Do all/most Healeys make this noise?  Should I just have the disks turned?
>>
>>
>> Thanks in advance, Mike
>>
>>
>> Michael Garvey
>>
>> 1967 BJ8/38046
>>
>> Swampscott, MA
>> ______________________________**_________________
>>
>>
>>
>>
>
> --
> ***********************************************************************
> Bob Spidell           San Jose, CA            bspidell@comcast.net
>
> ***********************************************************************
>
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