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It has to do with the parking brake. There's a mechanism in the caliper
that pushes on the piston when you activate the parking brake. The spinning
piston is the self-adjuster to deal with brake pad wear so the system works
with worn pads.
I don't think it's all that new- my '91 MR2 had this, and it was likely
around for a while before then.
-Larry
On Thu, Sep 13, 2018 at 3:54 PM <eric@megageek.com> wrote:
> Can someone please let me know what the advantage of the new 'spin to
> compress' brake pistons are?
>
> Seriously, were cars flying off the road with no brakes and I didn't
> notice it?
>
> This new system requires more tools* (and they didn't even standardize the
> pattern), more effort, most of the time destroys the boot, and requires you
> to line up a pin with the de-tent so you can put the caliper on.
>
> So what am I missing? Why are these better? I would image they are more
> complicated on the inside as well. Also seems that they require more
> machining/parts to make.
>
>
> *=I don't mind buying more tools, in fact I already bought the tool and
> I'm looking at an upgraded version of it.
>
>
> Sent from my Commodore 64 on a 2400 Baud Modem.
> Tech Viper
> "Be as beneficent as the sun or the sea, but if your rights as a rational
> being are trenched on, die on the first inch of your territory." Ralph
> Waldo Emerson _______________________________________________
>
>
>
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<div dir=3D"ltr">It has to do with the parking brake. There's a mechani=
sm in the caliper that pushes on the piston when you activate the parking b=
rake. The spinning piston is the self-adjuster to deal with brake pad wear =
so the system works with worn pads.<div><br></div><div>I don't think it=
's all that new- my '91 MR2 had this, and it was likely around for =
a while before then.</div><div><br></div><div>-Larry</div><div><br><div cla=
ss=3D"gmail_quote"><div dir=3D"ltr">On Thu, Sep 13, 2018 at 3:54 PM <<a =
href=3D"mailto:eric@megageek.com";>eric@megageek.com</a>> wrote:<br></div=
><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1=
px #ccc solid;padding-left:1ex"><font size=3D"2" face=3D"sans-serif">Can so=
meone please let me know what the
advantage of the new 'spin to compress' brake pistons are?</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">Seriously, were cars flying off th=
e
road with no brakes and I didn't notice it?</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">This new system requires more tool=
s*
(and they didn't even standardize the pattern), more effort, most of th=
e
time destroys the boot, and requires you to line up a pin with the de-tent
so you can put the caliper on.</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">So what am I missing?=C2=A0 Why ar=
e
these better?=C2=A0 I would image they are more complicated on the inside
as well.=C2=A0 Also seems that they require more machining/parts to make.</=
font>
<br>
<br>
<br><font size=3D"2" face=3D"sans-serif">*=3DI don't mind buying more t=
ools, in
fact I already bought the tool and I'm looking at an upgraded version o=
f
it. =C2=A0</font>
<br><font size=3D"2" face=3D"sans-serif"><br>
<br>
Sent from my Commodore 64 on a 2400 Baud Modem.<br>
Tech Viper<br>
"Be as beneficent as the sun or the sea, but if your rights as a ratio=
nal
being are trenched on, die on the first inch of your territory." Ralph
Waldo Emerson </font>_______________________________________________<br>
<br><br>
</blockquote></div></div></div>
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