[DML] Re: Custom Drilled Rotors
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[DML] Re: Custom Drilled Rotors



With cross-drilled rotors you will hear a high pitched whine when the
car is moving with the volume and pitch changing as a function of
vehicle speed. It will change a little when the brakes are applied,
usually it quiets down when the brakes are applied.
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, rodney rael <rodrael1@xxxx> wrote:
> David:
> 
> Can you describe what you mean by higher noise level?   and when?  
> when braking?    I purchased a set of John Hervey's cross drilled and
> I have noticed almost like a whining or a slight grinding noise when
> braking (PADS ARE NEW ALL AROUND)  I noticed the new noise after the
> rotors but didn't realize that it could be coming from that.   Is that
> the likely cause of the new noise?
> 
> Rodney
> 3300
> 
> On 6/17/05, David Teitelbaum <jtrealty@xxxx> wrote:
> > You don't mention how noisy it is. Also on many applications that are
> > cross-drilled the holes are angled which causes the rotors to become
> > "handed" so you can no longer use the left rotor on the right and
> > vice-versa. On the better cross-drilled jobs I do see the holes
> > countersunk so a less sharp edge is presented to the pads with a
> > minimal reduction in surface area but it does increase the noise
> > level. Anything you can do to keep the rotors cooler will increase the
> > life of the pads. Because the rotors on a Delorean are not ventilated
> > you probably gain a lot as compared to a ventilated rotor. The only
> > drawback I can see (besides the cost) is the higher noise level.
> > David Teitelbaum
> > vin 10757
> > 
> > 
> > --- In dmcnews@xxxxxxxxxxxxxxx, Woody <BePositive2000@xxxx> wrote:
> > > A few months ago I decided to research drilled rotors on the market,
> > > concentrating on drilled "solid" rotors.  I had a set of rotors with
> > > only a few miles use (plus a little rust) and decided to use them to
> > > see if I could get better performance than just the stock rotor.
> > >
> > > When developing my design, I looked at hole diameters, hole patterns
> > > and small design enhancements that might further improve p







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