[TR] TR3A Brake Rotors

[Brian Jones]

That is helpful Cosmo, thanks. I could never read the discs of your manual
you kindly gave me as they were on an odd word processor and I only have a
Mac. Never mind.

How is your car? I remember you had issues last fall that meant you couldn't
drive to the National, after riding with uncle jack for a while. You flew in
as I recall.

If your car is fixed, what was the issue?

See you on Jekyll Island!

Cheers, Brian



On Tue, Mar 9, 2010 at 7:08 PM, Cosmo Kramer <tr4a2712 at yahoo.com> wrote:

>  Date: Mon, 8 Mar 2010 12:54:58 -0800
> From: "Randall" <tr3driver at ca.rr.com>
> Subject: Re: [TR] TR3A Brake Rotors
>
> > I'd like
> > to have them turned at the shop I use, only they don't have
> > a minimum
> > rotor thickness spec. for the TR3A.
>
> I have never found an official "minimum thickness" from the factory.
> However, the workshop manual says to never remove more than .060", and the
> original thickness appears to be .500".  So I think .440" is a pretty good
> guess.
>
> Randall
>
>
> ----------------------------------------
> Here is what I have on this thread that has been discussed in the past:
> Brakes\Front\Rotors
> Subject:             Rotor Thickness
> Date:               Tue, 28 May 2002
> From:             <WBabbitt at aol.com>
>
> <Bwfox at aol.com> writes:
> > Listerati:
> > What is the minimum safe thickness for TR4A brake rotors?
> > -Barry Fox
>
> My new TR4A rotors (I believe they came from TRF) have a minimum thickness
> of
> 11.4 mm stamped on them.
> According to the Bentley Manual, minimum thickness is 11.18 mm. You pick
> it,
> -Bill Babbitt
>  ---------------------------------  &
> Brakes\Front\Rotors
> Subject:             240Z brake drums & rotor thickness
> Date:               Sat, 08 Jan 2000
> From:             Alan Myers <reagntsj at ricochet.net>
>
> In case it is helpful to anyone on the list, just checked a new TR4 rotor
> in
> the garage & it is marked min. thickness 11.3 mm, which I believe converts
> to
> .44 inch. Since it's new, I measured the starting thickness & found it is
> .505, which means you have .065 of wear allowed over the life of the rotor.
> I
> am guessing that TR3 through TR6 are probably about the same. May be diff.
> for
> some of the other Triumphs out there.
>
> The min. thickness on this rotor (Brembo) is stamped into the outside rim.
> I've also seen it cast into the hub area of the rotor.
> -Alan Myers
> -----------------------
> BTW- These threads where taken out of my TR4/A E-mail repair manual.
>
> -Cosmo Kramer
>
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