What vintage group is allowing cross drilled rotors? - I wanna join.
Don Queen
-----Original Message-----
From: owner-vintage-race@autox.team.net
[mailto:owner-vintage-race@autox.team.net]On Behalf Of Charles Christ
Sent: Monday, August 13, 2001 3:15 PM
To: N; vintage-race@autox.team.net
Subject: Re: Cross-drilled Brake Rotors - Can they be turned?
norm,
the rotor lathes i'm familiar with use a tiny hardened bit that machines the
rotor by flaking off tiny chips leaving a (what looks like a concentric set
of circular groves) spiral grove pattern on the surface. i can understand
how a brake specialist could say that. the tool bit would catch evry
drilled hole and either break the bit or at least damage the bit. now if
you know someone with a machine shop that could set up the rotor and cut the
surfaces with a CNC machine i think that might work. but! the set up
charges at a machine shop may end up costing as much as new rotors by the
time you get 2 rotors resurfaced? that is why i reccomend you find a friend
who works with one of these machines and get the job done that way. my
friend who is a machinist is about 5 hours away. but he gets all my wierd
"you want me to do what???" stuff. there are some teriffic local shops
here but i just can not bring myself to ask them to do what my friend
does.... let alone what they would charge.
chuck
----- Original Message -----
From: N <twobees@sprynet.com>
To: MG Digest <mgs@autox.team.net>; Vintage Race Digest
<vintage-race-digest@autox.team.net>
Sent: Tuesday, August 14, 2001 1:28 AM
Subject: Cross-drilled Brake Rotors - Can they be turned?
> My cross-drilled rotors are pretty tatty. So, I went to a local brake
shop
> today & the manager said cross-drilled rotors can't be turned.
>
> Spoke to another MG guy & he believes they can. Logically, I don't see
any
> reason they couldn't effectively be turned unless the grinding stones of
the
> turning machine are smaller than the holes in the rotor.
>
> I'm open to suggestions. BTW, Moss now has rotors with BOTH
cross-drilling
> AND slots for $150. (But, they aren't cryogenically treated. Hey, Kelvin
> how about that too?)
>
> Norm Sippel
> '66 MGB
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