[Healeys] Rear brake adjustment

Roger Grace roggrace at telus.net
Fri Apr 2 10:06:50 MDT 2021


Bob - just for interest.
Your large caliper (that I don't have)  idea got me thinking and
remembering that I have one of those digital inclinometer angle boxes that
I use to set up my saw.
The spec. claims 0.1 deg accuracy and it is spot on when comparing to an
engineering square.
So I used this as shown in the photos to set the shoe at 90 deg to the hub
(not backplate)
The 0.1 deg error translates into 4 thou at the edge of the 2.25 in width
shoe.
rg



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On Wed, Mar 31, 2021 at 7:31 PM Bob Spidell <bspidell at comcast.net> wrote:

> I think centering the shoes with the brakes applied works well, but only
> with new/freshly turned drums and shoes. If the shoes aren't centered they
> will wear uneven, and lock up uneven.
>
> The best idea I've come up with is to use a large caliper--not easy/cheap
> to find--and make sure the shoes are square to each other. If they are,
> they should be orthogonal to the backplate.
>
> Bob
>
> On 3/31/2021 10:58 AM, Michael Salter wrote:
>
> Obviously the quality of the felt being used is not satisfactory.  I've
> got a pair of BN1 rear brakes here that still have the felts in place and
> are still greasy.
> I don't believe eliminating metat to metal is the intent ... just to
> provide sufficient lubrication to eliminate squeaks.
>
> M
>
> On Wed., Mar. 31, 2021, 11:47 a.m. Roger Grace via Healeys, <
> healeys at autox.team.net> wrote:
>
>> Bob,
>> Yes agree about the felt bushes. I assume that their only function is to
>> prevent metal to metal contact ?
>> So do the fibre tubes protrude slightly beyond the end of the pegs ?
>> Will try to locate something suitable.
>>
>> Wonder how you adjust these pegs ?
>> There seems to be 3 different techniques:
>>
>> The Moss method with chalk marks on the shoes.
>>
>> The Salter method by adjusting in/out to each shoe edge then setting to
>> the mid point.
>>
>> The usual  method - centering  the shoes (by stomping on the brakes) then
>> adjusting the peg to just make contact while shoes are clamped.
>>
>> I tend to favour the last method .... ?
>>
>> Tkx
>> rg
>>
>>
>>
>
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