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RE: Drilled rotors

To: "'miq@teleport.com'" <miq@teleport.com>, Ajhsys@aol.com
Subject: RE: Drilled rotors
From: "Hanna, Mark" <mhanna@ball.com>
Date: Mon, 23 Aug 1999 15:39:30 -0600
Cc: gottstein@erols.com, spridgets@autox.team.net
Reply-to: "Hanna, Mark" <mhanna@ball.com>
Sender: owner-spridgets@autox.team.net
Miq ,
About how wide would you recommend the grooves to be ? Also any thoughts
about their orientation and the spacing between each groove ? I like the
idea . 
Mark Hanna
AN5
> -----Original Message-----
> From: miq@teleport.com [SMTP:miq@teleport.com]
> Sent: Monday, August 23, 1999 3:12 PM
> To:   Ajhsys@aol.com
> Cc:   gottstein@erols.com; spridgets@autox.team.net
> Subject:      Re: Drilled rotors
> 
> Ajhsys@aol.com says:
> > 
> > In a message dated 8/23/99 11:43:26 AM Eastern Daylight Time, 
> > gottstein@erols.com writes:
> > 
> > <<    Apparently I need to get new front rotors for my Midget, so I was
> >  wondering, is it worthwhile to get those "performance" drilled rotors,
> or
> >  will I be fine with the regular replacement kind?  Anything to stop the
> >  little guy faster would be welcomed. >>
> > 
> > - - - - - - - - - - - - - - - - - - - - 
> > 
> > The reason for cross drilling brake rotors is to vent hot air away from
> the 
> > pads, thereby reducing fade.  This is really only necessary when you are
> 
> > driving in competition.  On the road your pads will have plenty of time
> to 
> > cool between braking.
> > 
> > If you have experienced a lot of brake fade in whatever type of driving
> you 
> > do, go for the drilled rotors.  If you haven't, stay with the less
> expensive 
> > solids.  Theoretically, a solid rotor has more surface area than a cross
> 
> > drilled rotor, so it should stop the car faster, until the pads
> overheat.  
> > (IMHO of course.)
> 
> And if youare experiencing enough fade and heat to warrant "cross drilled"
> rotors, you will likely also be experiencing enough heat and stress to
> snap
> the rotor from the hub like a cheap straw hat.
> 
> You are much better off getting solid rotors slotted.  A competent
> machinist can cut the grooves the same depth as the recommended wear, and
> then not only will you get the benefits of gas venting and cooling, but
> also the strength of a solid rotor and a tell tale for rotor wear.
> 
> 
> -- 
> __
> Miq Millman   miq@teleport.com  
> Tualatin, OR

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