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Bill,
Where do you live? Hard to believe there isn't a brake shop or parts store
that could arc the shoes for you? Or a friction shop. Where do you live?
Ira Erbs
Portland,OR
_______ _______
(______ \____1959 BN4____/ _______)
(_________________________)
BT7 engine and disk brakes
1967 MGB [image: MG]
A racing car is an animal with a thousand adjustments. Mario Andretti
Please excuse random auto corrects and misspelled words
On Wed, Aug 7, 2019 at 2:59 PM WILLIAM B LAWRENCE <YNOTINK@msn.com> wrote:
> To Michael Oritt and others who were interested in this topic I have a
> late contribution:
>
> On the late test drive of my 100 after having it laid up for some time and
> installing new brake shoes (I can't remember the source, but probably Moss)
> I encountered the same problem.
>
> On removing the brake drums, which took some extra effort, I found that
> the shoes didn't have the proper arc to fit the drums. they were touching
> the drums on the leading and trailing ends, but not in the center. The
> excess thickness at those points made installation difficult and caused the
> shoes to drag on the drums.
>
> After searching out all of the old school brake shops in town I found that
> nobody has the equipment or expertise to reline or arc brake shoes anymore.
> A possible argument for converting to discs in the future
>
> I therefore resorted to the method recommended by my old strengths of
> materials instructor, the BF&I (Brute Force and Ignorance) method. I place
> each shoe in a vice and, noting the contact pattern on the surface and
> mindful that I was probably abrading an asbestos material I wetted the
> surface down with simple green and applied a flat bastard (note to
> moderator; this is an acceptable technical term related to types of files,
> and besides it is fun to type...) to the shoes and removed a few
> thousandths of an inch of material where they had been dragging.
>
> I got the first set right in one try and had to do a test assembly and
> rework on the other, but both sets are now sitting on the lowest points of
> their snail cams and the drums slip on and off with no interference. The
> whole job took less than half an hour including disassembly and
> re-familiarization with the assembly process.
>
> Bill Lawrence
> BN1 #554
> _______________________________________________
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">Bill,<div>Where do you live? Hard to believe there isn'=
;t a brake shop or parts store that could arc the shoes for you? Or a frict=
ion shop. Where do you live?=C2=A0<br clear=3D"all"><div><div dir=3D"ltr" c=
lass=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr=
"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><d=
iv dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div dir=3D"ltr"=
>Ira Erbs<div>Portland,OR</div><div><span style=3D"font-family:'Times N=
ew Roman',serif">=C2=A0 =C2=A0 =C2=A0 _______ =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0_______</span><br style=3D"font-family:'Times New R=
oman',serif"><span style=3D"font-family:'Times New Roman',serif=
">=C2=A0 =C2=A0=C2=A0 (______ \____1959 BN4____/ _______)</span><br style=
=3D"font-family:'Times New Roman',serif"><span style=3D"font-family=
:'Times New Roman',serif">=C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0 (______=
___________________)</span></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BT=
7 engine and disk brakes</div><div><br></div><div><br></div><div>1967 MGB =
=C2=A0<img src=3D"http://www.britishcarspecialists.com/assets/images/MG_emb=
lem.jpg" alt=3D"MG"></div><div><br></div><div><span style=3D"color:rgb(51,5=
1,51);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;fon=
t-size:14px">A racing car is an animal with a thousand adjustments. Mario A=
ndretti</span><br></div><div>Please excuse random auto corrects and misspel=
led words</div></div></div></div></div></div></div></div></div></div></div>=
</div></div></div></div></div></div><br></div></div><br><div class=3D"gmail=
_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Aug 7, 2019 at 2:59 P=
M WILLIAM B LAWRENCE <<a href=3D"mailto:YNOTINK@msn.com";>YNOTINK@msn.com=
</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:=
0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir=3D"ltr">
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
To Michael Oritt and others who were interested in this topic I have a late=
contribution:</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
On the late test drive of my 100 after having it laid up for some time and =
installing new brake shoes (I can't remember the source, but probably M=
oss) I encountered the same problem.=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
On removing the brake drums, which took some extra effort, I found that the=
shoes didn't have the proper arc to fit the drums. they were touching =
the drums on the leading and trailing ends, but not in the center. The exce=
ss thickness at those points made installation
difficult and caused the shoes to drag on the drums.=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
After searching out all of the old school brake shops in town I found that =
nobody has the equipment or expertise to reline or arc brake shoes=C2=A0any=
more. A possible argument for converting to discs in the future</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I therefore resorted to the method recommended by my old strengths of mater=
ials instructor, the BF&I (Brute Force and Ignorance) method. I place e=
ach shoe in a vice and, noting the contact pattern on the surface and mindf=
ul that I was probably abrading an asbestos
material I wetted the surface down with simple green and applied a flat ba=
stard (note to moderator; this is an acceptable technical term related to t=
ypes of files, and besides it is fun to type...) to the shoes and removed a=
few thousandths of an inch of material
where they had been dragging.=C2=A0</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
I got the first set right in one try and had to do a test assembly and rewo=
rk on the other, but both sets are now sitting on the lowest points of thei=
r snail cams and the drums slip on and off with no interference. The whole =
job took less than half an hour
including disassembly and re-familiarization with the assembly process.</d=
iv>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
Bill Lawrence</div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color=
:rgb(0,0,0)">
BN1 #554</div>
</div>
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</blockquote></div>
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