Slightly more than a month ago, we began to experience, capable of causing shock and awe at the Jamie Hyneman and Adam Savage (if you still remember these men). Today it's time to continue the story of, What will happen, if you put on a different axis of the car brake pads, and what better not to put pads completely.
Let us briefly recall, what we did the first time. experience staging is simple, as rhyme "goal-football": we have two sets of pads, car, that almost nobody sorry, and we put them on the front axle of the machine different pads. it was left to products LPR, case — Valeo. And before that we are on the safe side machined wheels and springs checked (Yes, even objectivity — our second name). And then put the car on the brake shield and looked, what happens. It turned out so-so: our guinea Focus has antilock brakes and ESP, which means, that the electronics will not get a huge difference between the braking forces to the right and to the left, even if it is significant. But the difference was still. Recall, what.
If the numbers — Total 8%. left block (it LPR) issued 1 880 H braking force, right (Valeo) — a little more, 1 970 Н. remind, it's time to get used in the pad was not: on the shield went straight to the lift.
Pay attention to one important detail: ovalization front disc after grooving was 1%. можно сказать, they were perfectly round and smooth. The string "adhesion" characterizes the shock absorber's ability to retain the wheel on the road, not letting him jump on the spring. The left shock absorber shown 79%, правый — 76%. This is a very good result. Related figures show new spring.
Besides, we measured the thickness of new pads. We will not overload you numbers and talk about this later, when we find out wear our shoes.
Since then, the car ran 5 thousands of kilometers. It is time to once again go to the board and to hold the braking force measurements and look, how they feel our pads.
Povdol and breadth
Let's start, пожалуй, also a table. Drumroll — here she is!
As you may have, the fastest, noticed, Focus stood on the same board, on which he stood a little over a month back. And here it is, the most shocking news: at cars all the same have the ability to regenerate itself! Otherwise it is difficult to explain, as the adhesion of the front left wheel has increased from 79 to 80%, and right — with 76 to 79. No wheels on the car changed, springs — тем более. And at the same time stood left rear brake disc: instead of ovalization 5% became 3%. Well, we assume, it's all about measurement errors. Despite the fact that, honestly, it could be much less: rear right shock absorber, eg, I began to work immediately on 13% effective. Source, Good dreams ..., back to our blocks.
And here, too, the positive trend: retard got better, brakes are more fun! But it is logical: Pads just run-drives. And the braking force has increased markedly. There she grew up with LPR 1 880 to 1 930 Н, and at Valeo and even more: with 1 970 to 2 160 Н. And here is another trend is clearly visible: Valeo pads initially slowed down a little bit better (difference was 90 Н), and at the moment they began to work on the whole 130 H efficient. And this is the error can not be called — with their own work, they do better. However, LPR to claim, too, no.
Prior to that, than to look block shot, look at the wheels. left behind 5 thousands of kilometers from the LPR received ovalization 4%, Right from Valeo — 3%. On driving is not affected, it is impossible to see, and the difference in 1% It can be safely attributed to the shield error. So there is nothing important there. But if you hold on the thumb drive ...
On the surface of the disk block Valeo there is only dust. He was smooth, virtually the same, What came out of the groove.
But drive with LPR are not lucky: even noticeable to the touch, he wears out more intensively. And pay attention to the dirt, which occurs due to the friction pads of a disc: Caliper with Valeo noticeably cleaner, than with LPR. However, This fact can be interpreted differently: a soft pad is less spoiled Disk. Despite the fact that we've got exactly the opposite.
And now look at yourself pads.
И LPR, Valeo and look great: by lining the pieces do not fall off, everything smoothly and accurately. But the cut in LPR visible conspicuous shcherbinki.
Such wear indicates that, that in the lining material has a relatively large and solid particles, that crumble from pads. And what they do? Right, port on the drive, why there are grooves on it. On the stocks Valeo there is no such — they rovnenkie.
We turn to the next act of the play tragic: take in hand caliper.
so, as our pads wear? Frankly east — very evenly. Firstly, naturally, This achievement served calipers. If the machine pads wear out at random, they are not to blame, namely calipers, who beheld affection and lubrication even in times of popularity Buynova and "Bamboo".
We ran to the figures. For the convenience of making such a plate.
With Valeo's simple: they simply dropped 0,3 mm. With LPR bit harder. Their thickness in different areas fluctuated 0,2 mm, thus more wear outside shoes, although such can not be — caliper presses the inner piston. But the general course of affairs is understandable: wear at LPR goes faster, than at Valeo. As in this case more myagenkaya disc pads wear more intense tougher — polemical question. I think, дело в том, that the larger particles fall off faster than LPR lining, scratching at the same disk. A more uniform material lining for Valeo, path and more robust, grind disc evenly.
Now put the shoe back and try to drive another represent thousands ..., five or six. And look, What has changed for the total mileage in 10-11 thousands of kilometers.
To be honest, then the move is no difference. May be, by car without ESP is any difference was seen, but then it slows down not only the driver, but also electronics. She did not give a great running shoe to steal a car in his side.
Yes and impartially difference braking force, obtained as a result of the measurement on the stand, small — Total 11%. With such a difference, you can safely ride and even pass inspection.
Alarming one point: the absolute values of the braking force on the rear axle at this time, too, came over, than the first metering, despite the fact that it did not touch any pads, no wheels. But the difference between the parties on the rear axle remains the same. So here it is more important than absolute numbers, namely delta between the parties. And she still ahead of the increased, so that inhibit our Kolodochka really different.
From the point of view of the driver from the Valeo there is one drawback: prirabotavshisь, these blocks started to creak, which is especially annoying in a car with automatic transmission in a traffic jam. And when you release the brake pedal, pad comes unstuck from the disk with an unpleasant click. May be, this — the cost over a longer service life and most pads, and drive? wait and — see.
In addition, there is another way to check, both pads are interaction with drives: ottormozitsya several times "on the floor" with speed 150-160 kmh. is he, naturally, barbaric, but it will be possible to assess the, some of the shoes "will float" above, and that it thus makes the brake disc. obviously, on a public road, we will not do: we honor the SDA and the same to you recommend.