normcaldwell
Go Kart Newbie
- Location
- Denver, Colorado
+1 on the Ferodo DS2500 pads.
More iron? Any* rotor is made from cast iron, even the cheapest,
since cast iron has proper thermal properties (thermal capacity +
conductivity) and is cheap.
Higher quality rotors have an increased content of carbon (HC =
'high carbon') for better thermal behaviour, and small amounts of
chromium, nickel (enhancing friction, wear resistance and shape
retention) and copper (for an even better thermal conductivity).
Two-piece designs have virtually nothing to do with ventilation
as you could also cast the same directional vanes into any single-
piece rotor (see Porsche).
It's to reduce deformation mainly. The rotor of a true two-piece
design is able to expand freely, while a one-piece brake rotor will
inevitably deform when it gets hot and therefore cause increased
pedal travel. Second reason is to reduce unsprung weight, third
is you could just swap the iron rotors and keep the aluminium bell
(which is common in racing for cost reasons).
* guess we're not talking about ceramic here
Two-piece designs have virtually nothing to do with ventilation
as you could also cast the same directional vanes into any single-
piece rotor (see Porsche).
It's to reduce deformation mainly. The rotor of a true two-piece design is able to expand freely, while a one-piece brake rotor will inevitably deform when it gets hot and therefore cause increased pedal travel. Second reason is to reduce unsprung weight, third is you could just swap the iron rotors and keep the aluminium bell (which is common in racing for cost reasons).
http://www.adamsrotors.com/232950/0/0/902/vw-mk7r-2015-vw-golf-r.html
Priced these out before, they're actually extremely reasonable and made in USA (+ completely custom at that).
Definitely check them out
but the lighter weight will make a difference in handling, right or not.Slotted, dimpled or drilled rotors make no difference on a street car being tracked.
Hey Neil,That's incorrect. One-piece (stock pattern) rotors can only take in air from one side due to the continuous web of metal joining the friction ring portion to the central hat. Two-piece rotors are, to various degrees depending on the design, open on both sides and can move more cooling air.
Properly
designed air guides, hoses and rotor vanes have a much bigger impact.
More iron? Any* rotor is made from cast iron, even the cheapest,
since cast iron has proper thermal properties (thermal capacity +
conductivity) and is cheap.
Higher quality rotors have an increased content of carbon (HC =
'high carbon') for better thermal behaviour, and small amounts of
chromium, nickel (enhancing friction, wear resistance and shape
retention) and copper (for an even better thermal conductivity).
Two-piece designs have virtually nothing to do with ventilation
as you could also cast the same directional vanes into any single-
piece rotor (see Porsche).
It's to reduce deformation mainly. The rotor of a true two-piece
design is able to expand freely, while a one-piece brake rotor will
inevitably deform when it gets hot and therefore cause increased
pedal travel. Second reason is to reduce unsprung weight, third
is you could just swap the iron rotors and keep the aluminium bell
(which is common in racing for cost reasons).
* guess we're not talking about ceramic here
I can't believe I'm actually seeing Adams rotors recommended.... What a racket.
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