Afco 6640122 Slotted Pillar Vane LH Iron Brake Rotor, 11.75 x 1 Inch
Dirt Late Model, Modified, Pavement Late Model, Left Position, 11.75 Inch Rotor Diameter, Iron
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This cast iron LH brake rotor by AFCO is designed to provide superior strength, decrease rotor weight, and run cooler. Each pillar is diamond shaped and precisely placed to optimize pad surface support thereby eliminating cupping.
- Manufactured with premium grade alloys for excellent thermal shock stability
- Double disked ground to ensure precise flatness
- Slotted to eliminate brake grassing between the rotor and pad surface which reduces pad tapper and increases contact with pad and rotor
- Rotationally balanced to reduce vibration and improve traction
Proper Break-In Procedure for Steel or Cast Iron Rotors
New steel/iron rotors should be bedded in before being used in racing conditions. Proper bedding will prepare the rotor surface, prolong the rotor's life, and make it more resistant to thermal checking or cracking under severe braking conditions. The following procedures should be performed when bedding in both steel and cast iron rotors. It is best to bed in a new rotor using a used set of pads, preferably ones which will not create heat rapidly. Generating heat too rapidly will thermal shock the rotors. Likewise, when bedding in a new set of brake pads it is best to perform the process on a used rotor. This new/used bedding process permits controlled bedding of each individual component.
Make sure rotor surfaces are free from oils, grease, and brake fluid. Run vehicle up to a moderate speed and make several medium deceleration stops to heat up the rotor slowly. This will help reduce the chance of thermal shock caused by uneven heating of the rotor. Pull into the pits and allow the rotor to cool to ambient air temperature. Care should be taken not to ride the brakes into the pits as this may hot spot the rotor causing premature wear to the surface or structural damage.
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Q & A
We get a lot of questions about brake kits so Tim gives a brief overview of disc brake setups.
If you're changing your brake pads before you hit your first race, it's important to burnish or bed-in your new pads. Check out our quick tech-tip on bedding brakes and how to minimize pad wear and get the best performance out of your brakes.
Tim talks about the options we have for early Ford drum brakes.
Tim demonstrates the brake assembly with a Wide 5 drum brake and Speedway's new self-energizing backing plate.