Author: Luche Senior Brother
"Luche Lab"
9.9 yuan free shipping wiper and imported brand wiper
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I specially prepared 4 wipers with different prices and brands
I hope to pass the following 4 tests to find their advantages and disadvantages
Doctor wipers , unit price 144 yuan, all spare parts of this wiper are imported from Belgian , assembled by Chinese factories, but are still imported.
Yika wiper , unit price 59 yuan. The rubber of this wiper comes from Dajinbei in Vietnam. The raw material of the steel bar comes from Bekaerte Steel Factory in Belgium, but its processing and forming are all completed in Xiamen, China, so it is made in China.
double-layer adhesive strip wiper , unit price is 45 yuan. This wiper has been used in many vans and trucks more than ten years ago, but it has only begun to become popular with family cars in recent years.
PDD Cheap wiper , free shipping for 9.9 yuan, because it is cheap, there is no packaging...
First I recorded the wiper effect of 4 pairs of wipers in a brand new state.
Because they are all new wipers, the wiper effect looks good at first glance, but if you look closely, you will find some differences. The one with relatively large displacement of wipers is obviously Yika wipers, and the other three models have similar displacements.
The wiper with the largest wiper range is the doctor wiper, and the wiper with the smallest wiper is the wiper with 9.9 free shipping. However, during the wiper wiper wiper wiper wiper, there was obvious shaking. I don’t know why, the double-layer tape wiper also jumped when it was wiped, but it was not very obvious.
However, Yika and the 9.9 free shipping wipers did not shake much when wiped.
"Scrape "Bird Shit" test"
I drip artificial "Bird Shit" of about the same size on the windshield, and then record how many times each wiper needs to be wiped completely to wipe the artificial bird shit prepared with chocolate and sand. Here I spray glass water directly with wiper wiper to wipe it, which will be closer to the real situation.
Doctor Wiper: After dropping the bird droplet, the bird droplet was completely scraped off after just 3 strokes, and there was no residue of the bird droplet on the wiper strip.
Yika wiper: After dropping the bird droppings, I only used 3 times and completely wiped the bird droppings. The glue strips were also very clean and there were no residues.
Double-layer adhesive strip wiper: After dropping the bird droplet, it took 8 seconds to completely scrape the artificial bird droplet. This result was beyond my expectations. And a little bit of the residue of bird droppings was found on the inside of the two glue strips. Of course, this is also one of the old problems with double-layer adhesive strips, which is that there will be small stones and mud and sand stuck between the adhesive strips on both sides.
Kuoduo 9.9 free shipping wipers: Although they are cheap, they are still very good. They scraped the bird droppings after just 4 times, and there was no residue on the glue strips.
"Ultraviolet irradiation test"
I used UV light to irradiate these 4 rubber strips for 48 hours, and then compare the aging of the surface of the rubber strips before and after irradiation and the wiper effect.
Because the biggest damage to the rubber strip is the ultraviolet ray with shorter light waves in the sunlight, it will directly cause the breaking of the rubber molecular chain, accelerate the reaction process of the oxidation chain, and gradually make the wiper wiper wiper wiper worse and worse. Therefore, the durability of the wiper is closely related to the rubber it uses and its ability to resist UV rays.
macro close-up before ultraviolet rays:
It can be clearly seen that the particle size of the surface of the Doctor and Yika wiper strips is relatively uniform, while the surface of the double-layer wiper and the wiper strips of the Duoduo Bargain does not look very uniform, and even has a fibrous rough feeling, especially the small traces of uneven potholes can be seen on the Duoduo Bargain. The main reason for this difference in
is the difference in the number of times the wiper strips are squeezed with the machine during the production process, and the different additive components used in the vulcanized rubber process.
Macro close-up after ultraviolet irradiation:
Dr. Wiper: Under the 30x enlarged macro camera lens, there is no big change. It looks exactly the same as before, and the rubber particles on the surface are still very uniform.
Yika wipers: No changes were found on the rubber surface.
Double-layer rubber strip wiper: The surface is the same as before, the rubber is not very uniform, and the feeling of rubber fiber can be clearly seen, but there are no signs of aging.
But a free shipping wiper for Duoduo 9.9: The surface has undergone obvious changes, and you can see very obvious cracks, which means that the rubber strips have begun to age, and you still have to get what you pay for!
Wipe effect after ultraviolet ray irradiation:
Dr. Wiper: The shaking of the wiper becomes severe, and it is very obvious, and there is even a significant shaking and abnormal noise. However, the wiper effect was not greatly affected. I think this situation is related to its largest wiper area, and its weight is the lightest among the four wipers.
Yika wiper: The wipe effect is almost no different from before illuminating the ultraviolet lamp, and there is no shaking when scraping. I think this is related to its integrated shell design and the high hardness of the internal support steel bar.
Double-layer adhesive strip wiper: Logically speaking, the double-layer adhesive strip should wipe more thoroughly, but what surprised me was that when I was scraping, a watermark appeared behind the wiper strip on the main driver, which was very long, and there was also a leak in the rear of the wiper strip of the co-pilot. It seemed that the ultraviolet rays still had an impact on it.
Kaoduo 9.9 free shipping wipers: The shaking is very obvious when scraping.
Conclusion:
Yika wipers with the least impacted by ultraviolet rays, followed by Dr. and Miaoduoduo 9.9 free shipping wipers. The most affected are the double-layer tape wipers, and its wiper effect has obviously decreased.
"High temperature roasting test"
I directly used a heater for winter and continued to illuminate the front of these 4 wiper strips for 48 hours, which is the side facing the sky after the wiper is installed on the car. Keep these 4 wipers between 70 and 80 degrees Celsius to simulate the high temperatures that wipers will experience in the car.
Close-up comparison of macro before and after roasting:
Dr. Wipers: The surface of the rubber strip is the same as in the brand new state, and there is still no difference.
Yika wiper: There is no big difference between the surface of the glue strip and the brand new state.
Double-layer adhesive strip wiper: The surface of the adhesive strip has obvious peeling, which is a typical aging state that the adhesive strip will occur after being affected by high temperature.
Kuoduo 9.9 Free shipping wiper: The peeling state of the surface of the glue strip is even more obvious.
Wipe effect after roasting:
Dr. Wiper wiper: When the wiper is scraped, the co-pilot's wiper will leak every time it is scraped, and the problem of wiper shaking still exists.
Yika wipers: When scraping down, the passenger's wipers leaked, but this leak occurred once in a brand new state, but disappeared when scraping the second time.
Double-layer adhesive strip wiper: It is also when scraping down, the passenger's wiper strip leaks, and it will leak every time it scrapes down. It seems that the high temperature has indeed had some impact on it.
Kaoduo 9.9 free shipping wipers: Like the previous situation, there is also obvious water leakage, and this leakage is actually in the new wiper state. It is even more obvious after ultraviolet irradiation and high temperature roasting. At least three water marks appeared, and each water mark is very long, almost extending to the bottom of the windshield.
Conclusion:
After high temperature roasting test, all four wipers were leaking under the co-pilot's wiper, so I think I can barely give two stars to the doctor, Yika, and double-layer adhesive wiper. Although the leak is not particularly serious.
And the wiper with free shipping for 9.9 is hard to describe in one word. I think this test gives it a star....
"Frozen Resistance Test"
I directly put the 4 wipers into my -20-degree refrigerator at home, then sprayed with water, and then violently thawed it after freezing for 24 hours. Let's see what changes will happen to the surface of the glue strip and the wipe effect.
Close-up comparison of macro before and after freezing:
Dr. Wipers: The surface is still exactly the same as when it was brand new, and they are all very uniform rubber particles.
Yika wipers: It is the same as when it was brand new, and there is no change in the surface.
Double-layer adhesive strip wiper: Some cracks can be clearly seen on the surface, and these cracks did not appear after the previous two tests.
Kuoduo 9.9 free shipping wipers: The surface cracks are more obvious, and two scars can even be seen, or they burst and peel. This should be caused by violently thawing the wiper out of the refrigerator.
wiper effect after freezing:
When this test, all wipers have undergone ultraviolet irradiation, high temperature roasting, and freezing for 24 hours, so let's see what changes in the wiper effect!
Dr. Wipers: The biggest problem is that it keeps shaking when wiped, and it is getting more and more exaggerated. You can feel the glass vibrating in the car, but it is relatively clean. Except for the co-pilot who will have some water marks when scraping down, there are no other leaks.
Yika wipers: The overall wiper effect is pretty good, the water is wiped clean, but when it is scraped down, the main and co-pilot wipers have a little leak, forming water marks.
Double-layer adhesive strip wiper: It is also the middle of the main and co-pilot's wiper. There is a leak when scraping down, and the leakage is relatively serious. When scraping up, there is also a leak in the upper edge of the main driver's wiper, forming excess water marks, and it is quite long. And it's also very loud when scraping.
Kuodou 9.9 free shipping wiper: This wiper should have the worst durability. The water on the glass can't be scratched clean, and after scraping, there are still large areas of water spots .
Conclusion:
The most serious leakage of wipers in this round of test was the wipers with 9.9 free shipping on a wiper, and I could only give him one star.
Double-layer adhesive strip wiper and Yika wiper. From the perspective of freezing resistance alone, I can give them two stars.
Although the doctor's wiper shakes and noise when scraped, it only has the rubber strip of the co-pilot leaking, and the main driver can still scrape it cleanly, at least maintaining the driver's clear vision, which is better than the other three models, so I gave him two and a half stars evaluation.
After ultraviolet irradiation, high temperature roasting and freezing tests, let’s test whether the effect of scraping bird shit has decreased!
I still drip the same artificial bird dropping on the same position on the windshield, and then use glass water with four wipers to scrape it.
The result is obvious. The doctor's wiper wiper was scraped 25 times, Yika wiper wiper 24 times, double-layer adhesive strip wiper wiper 26 times, and a 9.9 free shipping wiper wiper 27 times. The effects of the four wipers are very similar, so it seems that no matter what price wipers are, the situation is actually similar after aging.
Test summary:
Double-layer adhesive strip wiper: Double-layer adhesive strips are not necessarily cleaner than single-layer, because according to the final wiper test conclusion, both single-layer Yika and Doctor wipers are scratched cleaner than it, and the middle of the double-layer adhesive strips is easy to get dust and particles scraped off from the glass, which is more likely to scratch the glass. This is also the reason why it was eliminated many years ago.
Yika wipers: Overall, there is nothing big wrong with it. Although there is also a leak after several rounds of violent tests, its jitter and noise are the best controlled ones, which is also the advantage of the integrated molded shell.
Doctor Wiper: To be honest, it is indeed the cleanest scraping, but the problem is also the biggest, it is shaking hard and has a lot of noise! None of the other three models is as severe as jitters, and there is no noise.
But I found interesting that when I sprayed wiper fine , the doctor wiper did not shake at all when I wiped the glass. When I sprayed water on the glass, it started shaking again... so I was very confused.
I think this problem is very likely related to the hardness and material of the steel bars used to support inside the wiper, so I also specially disassembled all the four wipers and then compared the thickness and width of the steel bars inside them.
Dr. Wiper: The thickness of a single steel bar is 0.86mm and the width is 7.15mm.
Yika wiper: The thickness of the steel bar is 1mm and the width is 10.06mm.
double-layer adhesive strip wiper; the thickness of a single steel strip is 0.83mm and the width is 6.80mm.
Kuodou 9.9 free shipping wipers: the thickness of a single steel bar is the thinnest, only 0.72mm and the width is 6.72mm.
So from this simple comparison, we can see that whether the wiper is a single-layer steel bar or two steel bars, the thickness of the wiper can really suppress shaking, maybe it is the thickness of the steel bar, because as the best shaking, the thickness of its steel bar is the thickest among these 4 models!
If this video is helpful for you to buy wipers, please forward it to your friends and give me a like. If you want to get more knowledge about DIY car maintenance, or see me doing more reviews on car supplies, then follow Senior Brother Ruche updates every Wednesday and Friday. See you next time, bye.
