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The pads wear unevenly both radially and a bit circumferentially due to diff=
erent surface speeds and friction forces. As the pads wear unevenly they =E2=
=80=9Ccock=E2=80=9D in the caliper and bind up. The more wear, the greater t=
he binding.=20
Using some sort of a device (surface grinder, drill press etc with a good du=
st collector and mask for the operator) to make the face of the friction mat=
erial parallel to the backing plate solves this issue.
Yes, this does change the surface of the pad presented to the rotor. I do no=
t change rotors as they are in good shape. Any small to microscopic irregula=
rities between the two quickly get dealt with during the first session out a=
fter squaring the pads. This would be the same as putting new pads on the ca=
r with the old rotors. Just treat the first few laps as if you are bedding i=
n new brakes, which to some extent you are (except for temperature effects).=
Different from a street machine where rust and grit take their toll in the r=
otor surface.
Phil Gott
114 TR4A
Sent from my iPhone
> On Jul 21, 2019, at 10:33 AM, ralph hansen via Fot <fot@autox.team.net> wr=
ote:
>=20
> not to rain on the parade but, are you turning the rotors each time to mak=
e sure they are square also? if not, you now have unmatched surfaces - in th=
e old days with good metal rotors I could see a slight advantage, these days=
with the good pads we get, and soft rotors they wear together, you might ac=
tually get a very slight increase in surface contact due to the angles and d=
angles - and, as you machine the rotors you lose mass, the all important hea=
t sink that makes brakes work....
>=20
> On Saturday, July 20, 2019, 07:19:46 PM CDT, Mathieu W. Huovinen via Fot <=
fot@autox.team.net> wrote:
>=20
>=20
> Squaring up the pads? Please tell me more, I'm still learning. Thanks!
>=20
> -Marhieu
>=20
> _______________________________________________
> fot@autox.team.net
>=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/quikrx@yahoo=
.com
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=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/vfracing@aol=
.com
>=20
>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">The pads wear unevenly both radially and a b=
it circumferentially due to different surface speeds and friction forces. As=
the pads wear unevenly they =E2=80=9Ccock=E2=80=9D in the caliper and bind u=
p. The more wear, the greater the binding. <div>Using some sort of a de=
vice (surface grinder, drill press etc with a good dust collector and mask f=
or the operator) to make the face of the friction material parallel to the b=
acking plate solves this issue.</div><div>Yes, this does change the surface o=
f the pad presented to the rotor. I do not change rotors as they are in good=
shape. Any small to microscopic irregularities between the two quickly get d=
ealt with during the first session out after squaring the pads. This would b=
e the same as putting new pads on the car with the old rotors. Just treat th=
e first few laps as if you are bedding in new brakes, which to some extent y=
ou are (except for temperature effects).</div><div>Different from a street m=
achine where rust and grit take their toll in the rotor surface.</div><div>P=
hil Gott</div><div>114 TR4A<br><br><div id=3D"AppleMailSignature" dir=3D"ltr=
">Sent from my iPhone</div><div dir=3D"ltr"><br>On Jul 21, 2019, at 10:33 AM=
, ralph hansen via Fot <<a href=3D"mailto:fot@autox.team.net";>fot@autox.t=
eam.net</a>> wrote:<br><br></div><blockquote type=3D"cite"><div dir=3D"lt=
r"><div class=3D"ydp941a9bf5yahoo-style-wrap" style=3D"font-family: Helvetic=
a Neue,Helvetica,Arial,sans-serif; font-size: 13px;"></div><div class=3D"ydp=
941a9bf5yahoo-style-wrap" style=3D"font-family: Helvetica Neue,Helvetica,Ari=
al,sans-serif; font-size: 13px;">
</div><div class=3D"ydp941a9bf5yahoo-style-wrap" style=3D"font-famil=
y: Helvetica Neue,Helvetica,Arial,sans-serif; font-size: 13px;" dir=3D"ltr" d=
ata-setdir=3D"false">not to rain on the parade but, are you turning the roto=
rs each time to make sure they are square also? if not, you now have unmatch=
ed surfaces - in the old days with good metal rotors I could see a slight ad=
vantage, these days with the good pads we get, and soft rotors they wear tog=
ether, you might actually get a very slight increase in surface contact due t=
o the angles and dangles - and, as you machine the rotors you lose mass, the=
all important heat sink that makes brakes work....</div><div class=3D"ydp94=
1a9bf5yahoo-style-wrap" style=3D"font-family: Helvetica Neue,Helvetica,Arial=
,sans-serif; font-size: 13px;"><br></div><div class=3D"ydp941a9bf5yahoo-styl=
e-wrap" style=3D"font-family: Helvetica Neue,Helvetica,Arial,sans-serif; fon=
t-size: 13px;">
=20
</div><div class=3D"ydpfe57025dyahoo_quoted" id=3D"ydpfe57025dyahoo_=
quoted_4630465933">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, sa=
ns-serif;font-size:13px;color:#26282a;">
=20
<div>
On Saturday, July 20, 2019, 07:19:46 PM CDT, Mathieu W. H=
uovinen via Fot <<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net=
</a>> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"ydpfe57025dyiv9411600540"><p dir=3D"ltr"></p=
>
<p dir=3D"ltr">Squaring up the pads? Please tell me more, I'm still learning=
. Thanks!</p>
<p dir=3D"ltr">-Marhieu</p>
<div class=3D"ydpfe57025dyiv9411600540device_aol_et_org_dt_dd_quote"></div><=
/div>_______________________________________________<br><a href=3D"mailto:fo=
t@autox.team.net" target=3D"_blank" rel=3D"nofollow">fot@autox.team.net</a><=
br><br><a href=3D"http://www.fot-racing.com"; target=3D"_blank" rel=3D"nofoll=
ow">http://www.fot-racing.com</a><br><br>Donate: <a href=3D"http://www.team.=
net/donate.html" target=3D"_blank" rel=3D"nofollow">http://www.team.net/dona=
te.html</a><br>Archive: <a href=3D"http://autox.team.net/archive " target=3D=
"_blank" rel=3D"nofollow">http://autox.team.net/archive </a><a href=3D"http:=
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r></div>
</div>
</div></div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr">=
<span>_______________________________________________</span><br><span><a hre=
f=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a></span><br><span></spa=
n><br><span><a href=3D"http://www.fot-racing.com";>http://www.fot-racing.com<=
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blockquote></div></body></html>=
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_______________________________________________
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http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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