Brake pad drag reduction clips (tested)

[aardvarcus]

I went to replace my one with two on my previous vehicle (2005 Tacoma) and found the stock ones had more spring than the aftermarket replacements I had ordered, so I left it alone. On my current driver (1999 4Runner with 2005 Tundra Brakes), I ended up ordering new factory Toyota clips/springs and putting them on both sides of the caliper.

[ldjessee00]

Originally Posted by oil pan 4

I use them on the leaf.
Don't be afraid to double up on the clips if you need to.

Oh? I was thinking that I needed to do something or have a thinner disc installed, as the brakes are used very little and the drag can be heard...

I have never heard of these clips...

[Xist]

I found some for my Accord! Raybestos H6001 Brake Pad Drag Reduction Clips

How long would it take to pay back? They are $6.41!

[Ecky]

Originally Posted by Xist

I found some for my Accord! Raybestos H6001 Brake Pad Drag Reduction Clips

How long would it take to pay back? They are $6.41!

Depends on how accurately you measure, I imagine.

[Xist]

That doesn't sound very fast!

Edit: They are $8.70 for Mom's 2006 Camry. I would do these first because we are taking a road trip in her car soon, but they would not be here until after we return: Raybestos H6037 Brake Pad Drag Reduction Clips

[rmay635703]

Too bad they don’t have any for a 2000 Insight

[EcoCivic]

Originally Posted by rmay635703

Too bad they don’t have any for a 2000 Insight

Unless the brake pad and caliper design is extremely unusual you can probably modify clips for another vehicle to work or make your own out of bike spokes as some other people have done.

[Natalya]

Yeah I used some civic clips for my 2000 Insight. Took some bending though.

[LioNiNoiL]

Originally Posted by EcoCivic

I can't think of a good way to measure brake drag other than how long the wheel spins

That is actually a definitive method - the torque from brake+bearing* drag is (very nearly) constant, so the rate of decrease of wheel rotational velocity is constant, therefore that velocity decreases linearly (to zero) with time. The result is the ratio of times to stop (assuming the same initial velocity) is the inverse ratio of total drag.

about 5-10 seconds with the disc brakes... Now it will spin for around 15 seconds

...so two to three times as much, therefore one-third to one-half the drag.
Question 3 of the 2018 AP Physics test is a good reference to this phenomenon.

*air resistance at low speed is negligible.

Full Disclosure Disclaimer: I tutor AP Physics

[Galvatron1]

Thanks for the demo vids, helped to illustrate the point.

Had this been standard on all vehicles from the beginning, then premature brake/rotor wear, gas & emissions that could have been reduced...

I've noticed jerky back & forth movements when letting go of the accelerator & coasting sometimes seems to staggerdly end more abruptly than it should. Mechanic said the brakes which were just replaced are fitted as they should & he sees nothing wrong.