Why the inside pads wear faster

[TheZsdad]

Rotors are drilled from the outside in. Leaves a sharper edge on the inside so it eats the inside pad faster. TMFQ. <_<

 

[Redfish Hunter]

Flying unicorns? You klown!! Everyone but scooter knows only pigs fly.. U r such a simpleton

Whaddya mean I'm a simpleton? I know somebody who has a friend that stayed at a Holiday Inn Express...

Truly, I feel kinda dumb the more I type...

 

[LAF]

I'll go with Iggy's slider pin thought and add that the uneven wear phenomenon is not just in disc brakes used on motorcycles.

The applied force would be in proportion to hydraulic pressure for the inside pucks.

The outside would get the same hydraulic pressure, but the total mechanical system is more than hydraulic pressure at work. The force applied would be reduced ever so slightly by the crud and torsion on the pin that create friction. The difference in pounds would be very little if you measured what got applied to either side of the disc, but enough to wear the pads differently over a long period.

Plus Fooshee's gunk as far as releasing the mechanical system.

Plus 1

I am a freak with pistons and pins on the brakes. My pads look identical either side. I just did them again and the pins were horrible and the pistons had that circle of crude at varying lengths up the pistons.

I sand them clean and lube the pins with high temp ant seize. All gets spayed and brushed with brake cleaner. I push the pistons in and clean each seal with a clean detail nylon brush. I then lightly sand the rotors to facilitate bedding in the pads again.

I have done this to every motorcycle I have owned and never an issue with brake pads wearing too out of shape.

I can tell before and after by the pressure I have to exert to move them in by hand. I believe the pins are a big part of it, and the crud on the pistons are another. It takes a lot to clean and sand those pins clean so how could brake pads slide along it at equal pressure?

 

[ionbeam]

I lightly chuck the slider pins in my cordless drill set on Lo speed, spritz a mild Scotch Bright pad with brake cleaner and use my impromptu lathe to spin polish the pins. I have an array of small brushes that I use to clean the caliper pistons with brake cleaner before ever pushing the pistons in. I have a board a little thinner than the thickness of the rotor; with caliper in hand I insert the board between the pads, then lightly squeeze the brake until the pistons move out then remove the pads and clean the extended pistons. As long as I keep up with this maintenance my pads wear essentially equal.

Before installing the slider pins, roll them on a flat surface to make sure they are not bent.

 

[bbdig]

I lightly chuck the slider pins in my cordless drill set on Lo speed, spritz a mild Scotch Bright pad with brake cleaner and use my impromptu lathe to spin polish the pins. I have an array of small brushes that I use to clean the caliper pistons with brake cleaner before ever pushing the pistons in. I have a board a little thinner than the thickness of the rotor; with caliper in hand I insert the board between the pads, then lightly squeeze the brake until the pistons move out then remove the pads and clean the extended pistons. As long as I keep up with this maintenance my pads wear essentially equal.

Before installing the slider pins, roll them on a flat surface to make sure they are not bent.

Seems like a waste to use good scotch on your brake pins

 

[Bustanut joker]

I lightly chuck the slider pins in my cordless drill set on Lo speed, spritz a mild Scotch Bright pad with brake cleaner and use my impromptu lathe to spin polish the pins. I have an array of small brushes that I use to clean the caliper pistons with brake cleaner before ever pushing the pistons in. I have a board a little thinner than the thickness of the rotor; with caliper in hand I insert the board between the pads, then lightly squeeze the brake until the pistons move out then remove the pads and clean the extended pistons. As long as I keep up with this maintenance my pads wear essentially equal.

Before installing the slider pins, roll them on a flat surface to make sure they are not bent.

Seems like a waste to use good scotch on your brake pins

So right Jack...I bet cheap bourbon would work just as well....

 

[ionbeam]

I lightly...Scotch...the pins...

Seems like a waste to use good scotch on your brake pins

So right Jack...I bet cheap bourbon would work just as well....

Cheap bourbon would work, but would you do that to your FJR? Nothing but the best for my motorcycle. Even though it's a personal sacrifice I find I need to repeatedly test the scotch to be sure it is still good as the work progresses.