Henry Frye wrote:
>
> Good morning all,
>
> Maybe it is because the coffee hasn't done it's job this morning, but I
> am confused. OK, more confused than usual. ;-)
>
> Last night I pulled one of my calipers on the TR3B to find the DPO ran
> out of brake lining and scored the rotor pretty bad. No sweat, I was
> going to have the rotors cut anyway. Knowing the look I will get at the
> machine shop when I tell them the rotors are for a '62 Triumph, I opened
> up the books to find the minimum acceptable rotor thickness.
>
> Bentley TR2&3 manual and my Haynes TR250 and 6 manual (the TR3B has TR4
> brakes, the same as the TR250) read pretty much the same.
>
> This is the quote from Haynes:
>
> "Inspect the discs for signs of excessive scoring and, if evident, the
> discs may be reground but no more than a maximum total of 0.060 in
> (1.524 MM) may be removed from the disc. The desireable finish should be
> 32 micro in. maximum when measured circumferentially and 50 micro in.
> when measured radially."
>
> If I don't have the spec for a new rotor, how do I know if someone has
> already cut the .06 in.? What in the world is a micro inch? Am I missing
> the obvious here? Did my wife switch us to decaf and not tell me?
> --
> / - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - \
> | Henry Frye E-mail thefryes@iconn.net |
> | TR3B TCF1927 L http://www.iconn.net/thefryes/ |
> | TR250 CD8096 L A Little Town In |
> | TR250 CD1074 L Connecticut, USA |
> \ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - / ____Henry,
>when the machine shop puts it on the lathe he can mic. it
then & tell how far out it is, and if it a usacble item or not.
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