My dad owns a precision grinding machine shop. He can grind flywheels and brake rotors to tolerances better than how parts come from the factory. He does not use a flywheel or rotor cutting machine, but a Blanchard Grinder. Using his 50 year knowledge of grinding and with the right combination of grinding wheels and he can get the best results.

Is there any benefit to having tolerances better than stock in a performance car scenario?

 

any idea's?

 

what do you mean by tolerances?

grinding it down will remove material,
and make it lighter, that is very good for flywheels,
but you have to make sure you balance them as well, and do not remove too much material, which makes them weak.

 

I mean flatness.

 

ooh,
well flat is good i'm sure, haha

but I always thought flat was flat?

 

I suppose if you have a better surface finish on your brake rotor it would work better for the first time you brake. But after that I imagine the tolerance would disapear and go back to what it was.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad &raquo;</TD></TR><TR><TD CLASS="quote">

but I always thought flat was flat? </TD></TR></TABLE>

Haha....no One thing can be flatter than another, and you can never get something perfectly flat. There's always imperfections....be it .001, .00001, or .0000000000000000000000000000000000000000001

The imperfections we can allow for are called tolerances. Asking for tighter tolerances jacks up the machining cost, so it's good to know exactly how tight they need to be.

 

But, is there a line where performance enhances beyond how parts come from the factory?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">But, is there a line where performance enhances beyond how parts come from the factory?</TD></TR></TABLE>

Not when it comes to brake rotors and flywheels. I think they are almost given a bit of roughness to help it first mate with its opposing part. Maybe something like a cam surface but even there I doubt it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">But, is there a line where performance enhances beyond how parts come from the factory?</TD></TR></TABLE>

Yes, that's the whole point of blueprinting a motor. Don't know about brakes and flywheel though.

 

any more input?

 

what about having a flywheel and clutch made of a REALLLLY hard material like Titanium or carbon or kevlar etc with a smooth/rough surface like 600-800 grit sandpaper, just a thought, wouldnt that help it "stick" a lot better cos of that rough surface??? could apply the same for brakes, could also mean for fly/clutch- less pressure required......

-|saac|-

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by -ILLICIT- &raquo;</TD></TR><TR><TD CLASS="quote">what about having a flywheel and clutch made of a REALLLLY hard material like Titanium or carbon or kevlar etc with a smooth/rough surface like 600-800 grit sandpaper, just a thought, wouldnt that help it "stick" a lot better cos of that rough surface??? could apply the same for brakes, could also mean for fly/clutch- less pressure required......

-|saac|- </TD></TR></TABLE>


The first down side would be cost of course.

It would also chew through the clutch/brakes. The opposing surface. If you made both surfaces of a hard surface you would probably be right back where you started. Grip has never really been much of an issue. For brakes it's always been heat that is the killer. That's why they have been experimenting with ceramic composits and what not. Although with very little sucess. Also hard surfaces tend to be a bit more brittle.

It's not a bad idea, just that for every day use it is not required.

 

yea i figured that it wouldnt be any good for everyday, whatya reckon for like drags etc where things are constantly getting re-newed, yea composites & ceramics are THE ****!, f'in tough as nuts!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">My dad owns a precision grinding machine shop. He can grind flywheels and brake rotors to tolerances better than how parts come from the factory. He does not use a flywheel or rotor cutting machine, but a Blanchard Grinder. Using his 50 year knowledge of grinding and with the right combination of grinding wheels and he can get the best results.

Is there any benefit to having tolerances better than stock in a performance car scenario?</TD></TR></TABLE>


It seems to me that it wouldn't be beneficial at all since the clutch/brake pads mating up the flywheel/rotors won't be equally perfect.

 

any machine reputable machine shop can resurface flywheel/brakes w/in factory specs and making them more ideally perfect wont achieve any gains.