Subject: Re: [Fot] TR6 Porterfield R-4 Rear Brake Shoes - Carbotech relining

From: DAVE HOGYE via Fot <[email-masked]>
Date: Thu, 23 May 2024 07:36:18 -0700 (PDT)

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I used Carbotech a few times for front pads.  I had lots of problems with t=
hem.  Quality control is/was terrible.  The backing plate was ground down t=
o the friction material at the sides of the pads and they were not square. =
 So, there was far to much clearance in the caliper slot.  This caused the =
piston to torque once the brakes were applied.  This makes the pads wear at=
 an extreme angle and the pistons were leaving a witness mark in the bore f=
rom the induced torquing and side load.  The hot friction material was maki=
ng contact with the caliper casting.  I talked with Carbotech a few times a=
bout this and they were completely defensive and said they sell a lot of th=
ese pads and no one ever complained about this problem before.  They were n=
ot willing to check quality control or make them correctly.  I took many ph=
otos and some video of exactly what was happening and made a direct compari=
son to standard pads and Hawk pads.  The standard pads were NOS from a qual=
ity manufacturer, which I can't recall at the moment.  Standard backing pla=
te have a pretty tight fit in the caliper.  I think I found .010" clearance=
.  I found that the Hawk pads have very consistent production quality.  So =
I switched to Hawk.  I did like the feel of the Carbotech pads, but they re=
ally caused problems. =20
I'll share some photos and later.
Dave H.

> On 05/22/2024 1:53 PM PDT Mark Cook via Fot <[email-masked]> wrote:
> =20
> =20
>=20
> All,
>=20
> =20
>=20
> I spoke with Carbotech this afternoon after John and Ken=E2=80=99s email.=
  Carbotech will reline brake shoes and are familiar with vintage racing an=
d autocross requirements.
>=20
> =20
>=20
> Send the cores, along with brake drum specs (inside diameter so they can =
arc it correctly) and  your contact information (phone, email and address) =
to the Carbotech address below (not their Cleveland location).   They will =
give you a call back regarding the compound to use/recommended, based on ty=
pe of racing (or street), vehicle drum size etc.
>=20
> =20
>=20
> Carbotech Performance Brakes
>=20
> 4031 Dearborn Place N.W.
>=20
> Concord, NC 28027
>=20
> =20
>=20
> Thanks,
>=20
> =20
>=20
> Mark
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> From: Mark Cook [mailto:[email-masked]]
> Sent: Wednesday, May 22, 2024 4:37 PM
> To: 'John H. Hasty'; 'Ken Knight'
> Cc: 'Friends of Triumph Group Email'
> Subject: RE: [Fot] TR6 Porterfield R-4 Rear Brake Shoes
>=20
> =20
>=20
> John and Ken,
>=20
> =20
>=20
> Thanks and will give Carbotech a call =E2=80=93 was not aware they would =
reline brake shoes since it is not mentioned on their site.
>=20
> =20
>=20
> Do you use the XP8 or XP10 compound?
>=20
> =20
>=20
> Much appreciated,
>=20
> =20
>=20
> Mark
>=20
> =20
>=20
> From: John H. Hasty [mailto:[email-masked]]
> Sent: Wednesday, May 22, 2024 2:34 PM
> To: Ken Knight; Mark Cook; Friends of Triumph Group Email
> Subject: RE: [Fot] TR6 Porterfield R-4 Rear Brake Shoes
>=20
> =20
>=20
> They are also in Charlotte, 877 899 5024 I think the shoes are made somew=
here in Ohio but they can tell you
>=20
> =20
>=20
> =20
>=20
>=20
> =20
>=20
> John H. Hasty
>=20
> Of Counsel
>=20
> Mullen Holland & Cooper P.A.
>=20
> 301 S. York St.,
>=20
> P.O. Box 488
>=20
> Gastonia, NC 28053
>=20
> 704.864.6751 (p) 704.861.8394 (f)
>=20
> mhc-law.com http://mhc-law.com/ | [email-masked] mailto:jhasty@mhc-la=
w.com
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> =20
>=20
> From: Fot <[email-masked]> On Behalf Of Ken Knight via Fot
> Sent: Wednesday, May 22, 2024 1:39 PM
> To: Mark Cook <[email-masked]>; Friends of Triumph Group Email <fo=
[email-masked]>
> Subject: Re: [Fot] TR6 Porterfield R-4 Rear Brake Shoes
>=20
> =20
>=20
> Carbotech.  Used them for years.  They are in TX, use the Google.  Good L=
uck, Ken
>=20
> =20
>=20
> Sent from Mail https://go.microsoft.com/fwlink/?LinkId=3D550986 for Windo=
ws
>=20
> =20
>=20
> From: Mark Cook via Fot mailto:[email-masked]
> Sent: Wednesday, May 22, 2024 9:35 AM
> To: Friends of Triumph Group Email mailto:[email-masked]
> Subject: [Fot] TR6 Porterfield R-4 Rear Brake Shoes
>=20
> =20
>=20
> Porterfield is continuing to have production problems (since January) wit=
h the TR6 234 R-4 brake shoes due to curing issues and are trying a new res=
in.  In the meantime, is there another compatible product/brand for racing?
>=20
> =20
>=20
> I like to have a back up set.
>=20
> =20
>=20
> Thanks,
>=20
>=20
> Mark Cook
>=20
> =20
>=20
> =20
>=20
> _______________________________________________
> [email-masked]
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/dlhogye@com=
cast.net
>=20
>=20
>=20

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<!doctype html>
<html>
 <head>=20
  <meta charset=3D"UTF-8">=20
 </head>
 <body>=20
  <div style=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; c=
olor: #333333;"> <span style=3D"font-family: helvetica; font-size: 12pt;">I=
 used Carbotech a few times for front pads.&nbsp; I had lots of problems wi=
th them.&nbsp; Quality control is/was terrible.&nbsp; The backing plate was=
 ground down to the friction material at the sides of the pads and they wer=
e not square.&nbsp; So, there was far to much clearance in the caliper slot=
.&nbsp; This caused the piston to torque once the brakes were applied.&nbsp=
; This makes the pads wear at an extreme angle and the pistons were leaving=
 a witness mark in the bore from the induced torquing and side load.&nbsp; =
The hot friction material was making contact with the caliper casting.&nbsp=
; I talked with Carbotech a few times about this and they were completely d=
efensive and said they sell a lot of these pads and no one ever complained =
about this problem before.&nbsp; They were not willing to check quality con=
trol or make them correctly.&nbsp; I took many photos and some video of exa=
ctly what was happening and made a direct comparison to standard pads and H=
awk pads.&nbsp; The standard pads were NOS from a quality manufacturer, whi=
ch I can't recall at the moment.&nbsp; Standard backing plate have a pretty=
 tight fit in the caliper.&nbsp; I think I found .010" clearance.&nbsp; I f=
ound that the Hawk pads have very consistent production quality.&nbsp; So I=
 switched to Hawk.&nbsp; I did like the feel of the Carbotech pads, but the=
y really caused problems.&nbsp;&nbsp;</span>=20
  </div>=20
  <div class=3D"default-style" style=3D"font-size: 12pt; font-family: helve=
tica,arial,sans-serif; color: #333333;"> <span style=3D"font-family: helvet=
ica; font-size: 12pt;">I'll share some photos and later.</span>=20
  </div>=20
  <div class=3D"default-style" style=3D"font-size: 12pt; font-family: helve=
tica,arial,sans-serif; color: #333333;"> <span style=3D"font-family: helvet=
ica; font-size: 12pt;">Dave H.</span>=20
  </div>=20
  <blockquote type=3D"cite">=20
   <div>
     On 05/22/2024 1:53 PM PDT Mark Cook via Fot &lt;[email-masked]&gt;=
 wrote:=20
   </div>=20
   <div>
     &nbsp;=20
   </div>=20
   <div>
     &nbsp;=20
   </div>=20
   <div class=3D"WordSection1">=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">All,</span></p>=
=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">I spoke with Car=
botech this afternoon after John and Ken=E2=80=99s email.&nbsp; Carbotech w=
ill reline brake shoes and are familiar with vintage racing and autocross r=
equirements.</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Send the cores, =
along with brake drum specs (inside diameter so they can arc it correctly) =
and &nbsp;your contact information (phone, email and address) to the Carbot=
ech address below (not their Cleveland location).&nbsp;&nbsp; They will giv=
e you a call back regarding the compound to use/recommended, based on type =
of racing (or street), vehicle drum size etc.</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">Carbotech Performance Brakes</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">4031 Dearborn Place N.W.</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">Concord, NC 28027</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Thanks,</span></=
p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Mark</span></p>=
=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <p class=3D"MsoNormal" style=3D"margin-left: .5in;"><span style=3D"colo=
r: #1f497d;">&nbsp;</span></p>=20
    <div>=20
     <div style=3D"border: none; border-top: solid #B5C4DF 1.0pt; padding: =
3.0pt 0in 0in 0in;">=20
      <p class=3D"MsoNormal"><strong><span style=3D"font-size: 10.0pt; font=
-family: 'Tahoma','sans-serif';">From:</span></strong><span style=3D"font-s=
ize: 10.0pt; font-family: 'Tahoma','sans-serif';"> Mark Cook [mailto:mecook=
@mindspring.com] <br><strong>Sent:</strong> Wednesday, May 22, 2024 4:37 PM=
<br><strong>To:</strong> 'John H. Hasty'; 'Ken Knight'<br><strong>Cc:</stro=
ng> 'Friends of Triumph Group Email'<br><strong>Subject:</strong> RE: [Fot]=
 TR6 Porterfield R-4 Rear Brake Shoes</span></p>=20
     </div>=20
    </div>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">John and Ken,</s=
pan></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Thanks and will =
give Carbotech a call =E2=80=93 was not aware they would reline brake shoes=
 since it is not mentioned on their site.</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Do you use the X=
P8 or XP10 compound?</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Much appreciated=
,</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">Mark</span></p>=
=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <div>=20
     <div style=3D"border: none; border-top: solid #B5C4DF 1.0pt; padding: =
3.0pt 0in 0in 0in;">=20
      <p class=3D"MsoNormal"><strong><span style=3D"font-size: 10.0pt; font=
-family: 'Tahoma','sans-serif';">From:</span></strong><span style=3D"font-s=
ize: 10.0pt; font-family: 'Tahoma','sans-serif';"> John H. Hasty [mailto:jh=
[email-masked]] <br><strong>Sent:</strong> Wednesday, May 22, 2024 2:34 P=
M<br><strong>To:</strong> Ken Knight; Mark Cook; Friends of Triumph Group E=
mail<br><strong>Subject:</strong> RE: [Fot] TR6 Porterfield R-4 Rear Brake =
Shoes</span></p>=20
     </div>=20
    </div>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal"><span style=3D"font-family: Aptos;">They are als=
o in Charlotte, 877 899 5024 I think the shoes are made somewhere in Ohio b=
ut they can tell you</span></p>=20
    <p class=3D"MsoNormal"><span style=3D"font-family: Aptos;">&nbsp;</span=
></p>=20
    <div>=20
     <p class=3D"MsoNormal"><span style=3D"font-family: Aptos; mso-ligature=
s: standardcontextual;">&nbsp;</span></p>=20
     <table class=3D"MsoNormalTable" style=3D"border-collapse: collapse;" b=
order=3D"0" cellspacing=3D"0" cellpadding=3D"0">=20
      <tbody>=20
       <tr>=20
        <td style=3D"width: 184.5pt; padding: 0in 5.4pt 0in 5.4pt;" valign=
=3D"top" width=3D"246"> <p class=3D"MsoNormal" style=3D"text-align: justify=
;"><span style=3D"font-family: Aptos;"><img id=3D"x__x005f_x0000_i1027" src=
=3D"cid:[email-masked]" alt=3D"image001.png" width=3D"229" =
height=3D"150"></span></p> </td>=20
        <td style=3D"width: 233.75pt; padding: 0in 5.4pt 0in 5.4pt;" valign=
=3D"top" width=3D"312"> <p class=3D"MsoNormal" style=3D"background: white;"=
><span style=3D"font-size: 9.5pt; font-family: 'Arial','sans-serif'; color:=
 #222222; mso-ligatures: standardcontextual;">&nbsp;</span></p> <p class=3D=
"MsoNormal" style=3D"line-height: 12.0pt; background: white;"><span style=
=3D"font-family: Aptos; color: black; mso-ligatures: standardcontextual;">J=
ohn H. Hasty</span></p> <p class=3D"MsoNormal" style=3D"line-height: 12.0pt=
; background: white;"><span style=3D"font-family: Aptos; color: black; mso-=
ligatures: standardcontextual;">Of Counsel</span></p> <p class=3D"MsoNormal=
" style=3D"line-height: 12.0pt; background: white;"><strong><span style=3D"=
font-size: 10.0pt; font-family: 'Arial','sans-serif'; color: #1f2e57; mso-l=
igatures: standardcontextual;">Mullen Holland &amp; Cooper P.A.</span></str=
ong></p> <p class=3D"MsoNormal" style=3D"line-height: 12.0pt; background: w=
hite;"><span style=3D"font-size: 10.0pt; font-family: 'Arial','sans-serif';=
 color: #1f2e57; mso-ligatures: standardcontextual;">301 S. York St., </spa=
n></p> <p class=3D"MsoNormal" style=3D"line-height: 12.0pt; background: whi=
te;"><span style=3D"font-size: 10.0pt; font-family: 'Arial','sans-serif'; c=
olor: #1f2e57; mso-ligatures: standardcontextual;">P.O. Box 488</span></p> =
<p class=3D"MsoNormal" style=3D"line-height: 12.0pt; background: white;"><s=
pan style=3D"font-size: 10.0pt; font-family: 'Arial','sans-serif'; color: #=
1f2e57; mso-ligatures: standardcontextual;">Gastonia, NC 28053</span></p> <=
p class=3D"MsoNormal" style=3D"line-height: 12.0pt; background: white;"><sp=
an style=3D"font-size: 10.0pt; font-family: 'Arial','sans-serif'; color: #1=
f2e57; mso-ligatures: standardcontextual;">704.864.6751&nbsp;</span><span s=
tyle=3D"font-size: 10.0pt; font-family: 'Arial','sans-serif'; color: #7e899=
5; mso-ligatures: standardcontextual;">(p)&nbsp;</span><span style=3D"font-=
size: 10.0pt; font-family: 'Arial','sans-serif'; color: #1f2e57; mso-ligatu=
res: standardcontextual;">704.861.8394&nbsp;</span><span style=3D"font-size=
: 10.0pt; font-family: 'Arial','sans-serif'; color: #7e8995; mso-ligatures:=
 standardcontextual;">(f)</span></p> <p class=3D"MsoNormal" style=3D"line-h=
eight: 12.0pt; background: white;"><span style=3D"font-family: Aptos; color=
: #4472c4; mso-ligatures: standardcontextual;"><a href=3D"http://mhc-law.co=
m/" target=3D"_blank" rel=3D"noopener"><span style=3D"font-size: 10.0pt; fo=
nt-family: 'Arial','sans-serif'; color: #4472c4;">mhc-law.com</span></a></s=
pan><span style=3D"font-size: 10.0pt; font-family: 'Arial','sans-serif'; co=
lor: #4472c4; mso-ligatures: standardcontextual;">&nbsp;|&nbsp;</span><span=
 style=3D"font-family: Aptos; color: black; mso-ligatures: standardcontextu=
al;"><a href=3D"mailto:[email-masked]">jhasty<span style=3D"font-size: =
10.0pt; font-family: 'Arial','sans-serif';">@mhc-law.com</span></a></span><=
/p> <p class=3D"MsoNormal" style=3D"background: white;"><span style=3D"font=
-family: Aptos; color: black; mso-ligatures: standardcontextual;">&nbsp;</s=
pan></p> <p class=3D"MsoNormal" style=3D"line-height: 12.0pt; background: w=
hite;"><span style=3D"font-family: Aptos; color: black; mso-ligatures: stan=
dardcontextual;">&nbsp;</span></p> </td>=20
       </tr>=20
      </tbody>=20
     </table>=20
     <p class=3D"MsoNormal"><span style=3D"font-family: Aptos; mso-ligature=
s: standardcontextual;">&nbsp;</span></p>=20
    </div>=20
    <p class=3D"MsoNormal"><span style=3D"font-family: Aptos;">&nbsp;</span=
></p>=20
    <div>=20
     <div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; padding: =
3.0pt 0in 0in 0in;">=20
      <p class=3D"MsoNormal"><strong>From:</strong> Fot &lt;fot-bounces@aut=
ox.team.net&gt; <strong>On Behalf Of </strong>Ken Knight via Fot<br><strong=
>Sent:</strong> Wednesday, May 22, 2024 1:39 PM<br><strong>To:</strong> Mar=
k Cook &lt;[email-masked]&gt;; Friends of Triumph Group Email &lt;fo=
[email-masked]&gt;<br><strong>Subject:</strong> Re: [Fot] TR6 Porterfield=
 R-4 Rear Brake Shoes</p>=20
     </div>=20
    </div>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal">Carbotech.&nbsp; Used them for years.&nbsp; They=
 are in TX, use the Google.&nbsp; Good Luck, Ken</p>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal">Sent from <a href=3D"https://go.microsoft.com/fw=
link/?LinkId=3D550986">Mail</a> for Windows</p>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <div style=3D"border: none; border-top: solid #E1E1E1 1.0pt; padding: 3=
.0pt 0in 0in 0in;">=20
     <p class=3D"MsoNormal"><strong>From: </strong><a href=3D"mailto:fot@au=
tox.team.net">Mark Cook via Fot</a><br><strong>Sent: </strong>Wednesday, Ma=
y 22, 2024 9:35 AM<br><strong>To: </strong><a href=3D"mailto:[email-masked]=
.net">Friends of Triumph Group Email</a><br><strong>Subject: </strong>[Fot]=
 TR6 Porterfield R-4 Rear Brake Shoes</p>=20
    </div>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal">Porterfield is continuing to have production pro=
blems (since January) with the TR6 234 R-4 brake shoes due to curing issues=
 and are trying a new resin.&nbsp; In the meantime, is there another compat=
ible product/brand for racing?</p>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal">I like to have a back up set.</p>=20
    <p class=3D"MsoNormal">&nbsp;</p>=20
    <p class=3D"MsoNormal">Thanks,</p>=20
    <p class=3D"MsoNormal"><br>Mark Cook</p>=20
    <p class=3D"MsoNormal"><span style=3D"color: #1f497d;">&nbsp;</span></p=
>=20
    <p class=3D"MsoNormal"><span style=3D"font-size: 12.0pt; font-family: '=
Times New Roman','serif';">&nbsp;</span></p>=20
   </div> _______________________________________________=20
   <br>[email-masked]=20
   <br>=20
   <br>http://www.fot-racing.com=20
   <br>=20
   <br>Donate: http://www.team.net/donate.html=20
   <br>Archive: http://autox.team.net/archive http://www.team.net/pipermail=
/fot=20
   <br>Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/dlhogy=
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  </blockquote>=20
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From: finishing Touch via Fot <[email-masked]>
Date: Thu, 23 May 2024 15:48:18 -0400

I'm on my 3rd set of Carbotech front pads for my TR6 race car and never 
had any issues....I do spend the extra $ and have them pre-bedded.

Mike Kurtz
#51 TR6

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From: yellow04 via Fot <[email-masked]>
Date: Thu, 23 May 2024 21:27:59 -0400

My issues with Carbotech has not been the quality of the pads, it has 
been the shoes for the rear drums. I have had a couple of failures where 
the lining breaks up at the top or bottom edge, and once it starts 
crumbling, it is game over. I got to the point where I was mixing and 
matching shoes from different sets to actually get 4 shoes to wear out 
evenly.

Last year there was a thread here about running stock linings on the 
rear shoes, and the first thing in my head was that's nuts. But taking 
into account where those racers were finishing, I decided the worst 
thing that would happen is I needed to swap brake shoes in the paddock.

OK, I didn't go with the Moss Motors "who knows where they came from" 
shoes, I went to Rock Auto and spent all the money on a set of genuine 
Raybestos shoes, currently available for a whopping $32 plus shipping. I 
ran them for the first time at Summit Point last weekend and they seemed 
fine. Obviously, until I put eyes on them the jury is still out, but I 
really didn't think I could tell any difference in stopping power. Most 
importantly, my lap times were OK and consistent.

Thinking I probably had less coefficient of braking, I did nudge the 
balance bar a tad to the rear, and after the first session where I did a 
completely crap job of bedding them in, I never thought about them all 
weekend.

Henry

On 2024-05-23 10:36, DAVE HOGYE via Fot wrote:
> I used Carbotech a few times for front pads.  I had lots of problems
> with them.  Quality control is/was terrible.  The backing plate was
> ground down to the friction material at the sides of the pads and they
> were not square.  So, there was far to much clearance in the caliper
> slot.  This caused the piston to torque once the brakes were applied.
> This makes the pads wear at an extreme angle and the pistons were
> leaving a witness mark in the bore from the induced torquing and side
> load.  The hot friction material was making contact with the caliper
> casting.  I talked with Carbotech a few times about this and they were
> completely defensive and said they sell a lot of these pads and no one
> ever complained about this problem before.  They were not willing to
> check quality control or make them correctly.  I took many photos and
> some video of exactly what was happening and made a direct comparison
> to standard pads and Hawk pads.  The standard pads were NOS from a
> quality manufacturer, which I can't recall at the moment.  Standard
> backing plate have a pretty tight fit in the caliper.  I think I found
> .010" clearance.  I found that the Hawk pads have very consistent
> production quality.  So I switched to Hawk.  I did like the feel of
> the Carbotech pads, but they really caused problems.