[Tigers] Stock Brake Rotor Eval?

[Thomas Witt]

I have an old post going back to 2002 that states the following:

 >>>The new rotors are .500 inch and the minimum is .375 inch.  The data 
came
from a factory service bulletin.  Hope this helps.
Dan <<<  (I assume, but don't know that "Dan" is Dan Williams)

I actually used this post at the local Pep Boys as validation for the rotor 
minimum.  I was asked however to sign that I accepted the turned rotors (and 
liability). My recollection is that the rotors turned to about .425-ish.  I 
had a spare set of rotors that I immediately took over to them.  I figured I 
might not get such an accommodating service manager again (he was a Triumph 
guy).  I'm glad I did. Back in 2002 it was $6 a rotor to turn. Now it is 
$15.

Tom


----- Original Message ----- 
From: " Ron Fraser" <rfraser at bluefrog.com>
To: "'Terry Packer'" <packertl3 at yahoo.com>; <tigers at autox.team.net>
Sent: Wednesday, January 22, 2014 11:31 AM
Subject: Re: [Tigers] Stock Brake Rotor Eval?


> Terry
> Cracks in the brake disc are usually cause by too much heat.
>
> I have not experienced anything like this on my Tiger, on other vehicles,
> yes. I normally get a pedal feedback which means something is going bad 
> and
> needs repair or replacement.
>
> If you do not intend to do Track Time or hard heavy braking they could be 
> OK
> for awhile.
>
> I would say that if the rotor can be turned to eliminate the cracks 
> without
> taking too much material off; they could be OK.   Otherwise doorstops.
>
> I'm not sure what the min thickness is allowable for the rotor; it's not
> listed.  I believe the original thickness is about .5" and I believe the 
> min
> should about .45".
>
>
> Safety first and always
>
> Ron Fraser
>
> -----Original Message-----
> From: tigers-bounces at autox.team.net [mailto:tigers-bounces at autox.team.net]
> On Behalf Of Terry Packer
> Sent: Wednesday, January 22, 2014 1:42 PM
> To: tigers at autox.team.net
> Subject: [Tigers] Stock Brake Rotor Eval?
>
>
> While apart for other service, close inspection of one front brake rotor
> revealed 2 very fine radial cracks. Both are on the same side of the disk
> only, in the middle of the
> friction face,  and do not extend to the perimeter
> of the disk. One is about 1/2" long and can be detected with a fingernail.
> The other is longer but cannot be felt. The longer one looks like it could
> be connecting a series of tiny flaws in the original casting material. 
> Also,
> it is quite possible these have been present for a very long time already
> and have simply gone undetected until now.
>
>
> We all agree already that brake
> components are relatively cheap and prudence would advise simply tossing
> anything at all about which there is a question. So that wisdom need not 
> be
> repeated. But I was nevertheless curious to hear whether there's any
> experience with this particular symptom that might cause me to think
> differently. So. . . .
>
>
> 1) Is this disk definitely a doorstop?
> 2) Is this
> disk only probably a doorstop? or
> 3) Is it at all possible these cracks are
> not uncommon in old castings and should not cause undue concern?
>
> Wisdom
> always appreciated
>
>
> Terry Packer
> 9470018