- What are directional rotors?
- What are two causes of rotor thickness variation?
- What does rotor thickness mean?
- Which term refers to variations in thickness of the rotor?
- What are slotted rotors?
- Do drilled and slotted rotors have a direction?
- What causes thickness variation?
- Is parallelism and thickness variation are the same?
- Can disc brake rotors be of the hub style?
- How thick should disc rotors be?
- What is the standard thickness of brake rotors?
- What are caliper housings made of?
- What is the difference between rotor runout and thickness variation?
- Which term refers to a wobbling rotor?
What are directional rotors?
Directional vs. Straight Vane Rotors
Some higher performance cars come with "directional rotors", which have curved or tilted internal cooling vanes. These curved vanes pump more air through the rotors, resulting in improved cooling efficiency. Thus, there is a left and a right rotor.
What are two causes of rotor thickness variation?
It is often caused by off-brake wear resulting in flat spots or thin sections of the disc. Run out needs to be measured with a dial indicator with the rotor mounted on the vehicle however, DTV can be measured using a precision micrometer off the vehicle.
What does rotor thickness mean?
You'll need to know the minimum thickness. The rotor's minimum thickness tells you the minimum operational level of your rotor. This level can be found engraved on the sides of the rotor, within the veins of the rotor, or on the hat of the rotor.
Which term refers to variations in thickness of the rotor?
rotor parallelism are variations in thickness.
What are slotted rotors?
Slotted rotors are brake rotors with slots etched onto the friction surface of the rotor. These slots help "wipe" the brake pad clean during each pass and help maintain an even pad wear as well as performance.
Do drilled and slotted rotors have a direction?
The direction of Slots and/or Drill Holes does not determine rotational direction. Depending on the manufacturer, the slots or holes could lean either direction. If the rotors have straight cooling vanes, they can be installed on either side. The direction of the slots or holes is up to you.
What causes thickness variation?
If your brake pedal feels like it's pulsing or vibrating, you might have brake disc thickness variation (DTV). This is a small variation in the thickness of the friction surface of the rotor(s). This is usually caused by the rotors receiving uneven wear.
Is parallelism and thickness variation are the same?
Brake pedal pulsation with the brakes applied, may be the result of rotor thickness variation typically described as parallelism. Parallelism is when the rotor thickness varies from one point to another.
Can disc brake rotors be of the hub style?
Excessive disc brake rotor thickness variation will cause: brake pedal pulsation. Technician A states that disc brake rotors can be of the hub-style.
How thick should disc rotors be?
Disc brake rotors usually last so long that many people treat them as 'fit and forget' components. However, manufacturers provide minimum thicknesses for their rotors. Shimano recommends that its rotors, which start out 1.8mm thick, should be replaced when the braking surface has been reduced to 1.5mm.
What is the standard thickness of brake rotors?
Measure the brake rotor thickness 0.40 inches (10mm) inside the outer circumference of the brake rotor every 45° ( 1 / 8 of a rotation).
What are caliper housings made of?
Modern braking systems in cars typically are made of cast iron or a combination of a cast iron bracket with an aluminum brake caliper housing.
What is the difference between rotor runout and thickness variation?
Disc thickness variation happens when a rotor varies in thickness on its surface. What causes a Disc Thickness Variation to occur? DTV is caused by an excessive lateral runout. Lateral runout is the amount of side to side movement of the rotor as it rotates.
Which term refers to a wobbling rotor?
The term “warped brake rotor” is used pretty loosely to define any brake rotor that isn't flat and parallel with the plane of rotation. But there are other things that can cause brake pedal pulsation and there are ways that rotors can distort that don't always produce pedal pulsation, but do affect braking.