Aluminum Rotors
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 292
From: Central KY
Has any one seen aluminum rotors in an application? I have heard of such things but I am beginning to think it is an urban legend. Seems like the difference in temperature properties would be too different to be useful.
Senior Member
Joined: Nov 2002
Posts: 3,108
are we talkinga bout rotors as in engine rotors or brake rotors.
There are aluminum brake rotors.
They are made out of durachem.
which is a aluminum metal matrix. Super hard to work with. You have to cut it with water because it pretty much is sooo tough it dulls whatever is used to cut it.
There are aluminum brake rotors.
They are made out of durachem.
which is a aluminum metal matrix. Super hard to work with. You have to cut it with water because it pretty much is sooo tough it dulls whatever is used to cut it.
Super Moderator
Joined: Sep 2002
Posts: 5,425
From: Tallahassee, FL
From what I understand, the lightweight rotors from racing beat are stock rotors, cut down with a CNC machine and balanced.
Our Super Lightweight Rotor Assemblies - both turbo and non-turbo - are machined lightened using a CNC (computer numerically controlled) mill. The initial weight of the rotor is approximately 9.7 pounds, and upon completion of the machining process the weight is reduced to approximately 8.7 pounds. In addition to the machine lightening process we also snap-ring the rotor gear to ensure it remains in place during high RPM operation. After completion of these machining processes we fully balance each pair of rotors with matching front and rear counterweights to provide an assembly capable of high RPM operation.
The non-turbo rotors are based on the stock 1989-92 rotors (9.7:1) compression ratio), while the turbo rotors are based on the stock 1989-91 rotors (9.0:1 compression ratio).
The non-turbo rotors are based on the stock 1989-92 rotors (9.7:1) compression ratio), while the turbo rotors are based on the stock 1989-91 rotors (9.0:1 compression ratio).
