Aluminum vs. copper brake pads - which are better?

[@GaisaSanktejo]

I suggest redoing the test after either replacing or milling the surfaces of those copper pads then re-turning the rotors to clean them properly, since the copper pads appear to be contaminated by residue aluminium from the aluminium test and gave you poor results

[@vincentrobinette1507]

I'm glad I read this reply: I was about to make the same comment about the copper pads looking like they rubbed residual aluminum out of the rotors.

[@yassouaboudjatit4975]

I would radher see it on an abs vehicle

[@heyitMeMcFlyunfortunately]

they are not doing real tests they spend a lot of time to make these videos 'proper' tests would include monitors hooked up to measure temperatures and wear and braking distances your idea would add nothing to the way they do their tests

[@bugzbunny69]

@@heyitMeMcFlyunfortunately So, yeah it doesn't have to be scientific but shouldn't be stupid poor either.

[@Dzejk86]

@@heyitMeMcFlyunfortunately ok thank you for your kind words dear friend

[@demoderby181]

You should also try brass pads. That’s what we use on our ATVs because they’re really durable and rocks and mud don’t eat them up like conventional pads do.

[@eightosaurusspelunk1598]

That's interesting. Do you make them yourself from blanks of brass or what?

[@demoderby181]

@@eightosaurusspelunk1598 yes. We remove the original pad material and rivet on the brass. They work really good.

[@-Jethro-]

Are they noisy? How do they perform?

[@demoderby181]

They perform very good. Not noisy at all. Just like a regular pad but don’t get eaten up like regular pads do in mud/dirt.

[@jwalster9412]

The issue it that's cars are alot heavier, so the brakes would probably over heat, fade, and with the being repeated alot the pads would wear down very fast.

[@scott8919]

Try the aluminum pads with a car that has ABS. I wonder how well the system would work with pads so sensitive.

[@raven4k998]

what about gold brake pads?🤣🤣🤣

[@survidmt]

Great thought scott

[@Krishna-Govender]

Copper work hardens when force is applied and softens when its heated. In this case both were happening repeatedly, so a graph of the results would have been interesting.

[@Norwegian_Bastard]

am i remembering correctly thay copper gets a h igher coefficent of friction the hotter it gets to a certain point? cinter clutches and racing brakes have copper and stuff like that in em if i remeber correctly, and they all need abuse to work correctly.

[@chincemagnet]

This really is the most fascinating car channel on KZbin imo, they do the cool stuff other people just can’t do, because their skill level in fabrication is extraordinary

[@raven4k998]

yeah, but you have to be super rich to use copper for brake pads🤣🤣🤣🤣🤣

[@chincemagnet]

@@raven4k998 😆 you can order customized copper plates and other pieces and metals online, I ordered a copper plate once a few years back but I can’t recall where. But yeah, copper isn’t cheap, even for a small 1/8 inch thick plate 2x2 inches it was $6 in 2017, online metals, I looked it up 😆

[@GrantJohnston-dr9rt]

Because the others lack their imagination and creativity!

[@martynwatson4929]

I use a copper type sintered brake pad in my dirt bike, they brake well in the wet and mud but they wear the rotors faster than the carbon/kevlar type.

[@volvo09]

I've seen those, they have a lot of copper in them.

[@rian0xFFF]

Most brake works good in wet

[@atlasgunther8947]

The rulers hate us having copper anything today but do love them some planned obsolescence 24-7.

[@atlasgunther8947]

That's why they market thin pads that require replacing often, hello?

[@skylinefever]

I'm not sure if the low copper or zero copper brake pads are really a problem. I used Akebono zero copper brake pads on my mom's 2011 Honda CRV. They even outlasted OEM Honda brake pads, which may have had copper.

[@teardowndan5364]

Once you brake hard enough to lock up the wheels, your brake pads no longer have any influence on stopping distance and threshold braking (not locking up) gives you better distance than locking wheels while also sparing the very high tire wear.

[@blahorgaslisk7763]

Threshold braking give shorter stopping distance on tarmac and regular roads. On gravel locking the wheels actually is likely to result in shorter stopping distance. This is because the gravel builds up in front of the locked wheel increasing the friction over what is possible for a rolling wheel. Snow can act the same way while on tarmac, concrete or any other hard surface locked wheels means a longer stopping distance. But locking the wheels always means you are giving up any pretense to control the direction the car travels in. So ABS or threshold braking if you don't have ABS is almost always preferable even if the stopping distance can get slightly longer on gravel. Oh and threshold braking is never as good as ABS. Never! Neither in allowing you to retain control or in getting the shortest possible stopping distance. Well retaining control isn't entirely true. Locking the breaks can allow you to perform maneuvers you can't otherwise do. But it takes skills most people don't have and in a panic situation I'd much rather have a vehicle that steer better.

[@tiagobelo4965]

@@blahorgaslisk7763 according to the folks at team o'neil, it still works well on gravel (I'll drop the link at the bottom) likewise, threshold braking can outperform ABS, but it's more a question of how good your abs is (without even considering loose surfaces) here's the video btw: kzbin.info/www/bejne/ipfInI2ZjMZpepo

[@DarkLinkAD]

All my FWDs get skinny mud tires for snow, It gives me the grip to pull out when the rear whips arround. Stuipid amount of control with those.

[@blahorgaslisk7763]

@@tiagobelo4965 I counter with Engineering Explained and a video about why it's impossible for a human to outbreak a proper ABS system... kzbin.info/www/bejne/fV6qdoihnrKogs0 It's not the first time I've come across the idea that threshold braking can be more efficient, but every time it's been either someone's personal opinion or proven wrong through testing. Eng.Exp however has a very good explanation of the mechanics of why we as humans can't compete. But just incase... I'm now off to see if Team O'Neil can convince me of anything else and I'll have to come back and eat crow. May the best sources win!

[@blahorgaslisk7763]

@@tiagobelo4965 Good video, but not enough to convince me I should disable ABS and use threshold braking instead. It's my personal opinion that is you regularly rely on ABS when braking in your daily driving you are living on borrowed time. In any situation other than competition the ABS should never need to engage unless something catastrophic is happening. Whenever you feel ABS working you were either driving to fast or are braking to hard. Like stated in the video from Team O'Neil you have to plan ahead when driving. If you have to rely on ABS to slow down enough to take a curve you are just a few ounces of lose gravel on the road from having a very bad day. ABS is for the situations you can't predict such as a child running out from behind a parked car, a deer taking a leap up onto the road only to freeze in your headlights. It's for the kind of situations when your brain goes into panic mode, not for helping you drive faster and brake later. And when things like that happens the brains reaction time is still not good enough, so you really don't have time to find that perfect brake pressure that won't lock up your wheels.

[@christhorney]

garage 54, always answering the questions no one ever asked

[@joelstanhope7231]

Lol ! Great guys , keep having fun and entertaining us

[@Monni95]

Need to make similar comparison with bronze and brass brake pads...

[@twocvbloke]

I think the copper pads were getting contaminated with aluminium remnants from the discs, would have been a better idea to have separate sets of discs to test so one didn't harm the other...

[@digitalchaos1980]

That would definitely have been the best way to do this, yes!

[@kylereese4822]

I agree... I bet high grade brass would be even better ?

[@ashenthrenchetty7]

They machined the discs before both tests.. So was no contamination

[@TobiasLeininger]

@@ashenthrenchetty7 they didn't. You can clearly see the aluminium on the copper pads.

[@SteveTheCanadian]

@@ashenthrenchetty7 they said they will machine the rotors. Clean them. Then put the pads. But all they did in the next shot was clean the rotors. Definitely contamination between the two

[@msnpassjan2004]

Your machining skills are always impressive.

[@thefreedomguyuk]

As long as you won't ask them to weld anything 🤣

[@whitesapphire5865]

You guys have noticed the shiny metallic flecks in brake pad material? Copper is one of the metals used in the brake material. The light coloured flecks, could be aluminium, or magnesium. I'm not sure about modern pads and shoes, but in times gone and past, brake linings were formulated for specific applications, and in particular, according to whether the brakes were servo assisted, non assisted.

[@otm646]

Copper has been almost fully eliminated at least in North America, it was causing reproductive issues in salmon. I believe they are limited to 5% copper max, some brands have moved to a fully copper free formula.

[@bgbthabun627]

@@otm646 that's correct don, so good of you to mention this.

[@DarkLinkAD]

Id like to see the study on that, copper is still in every Horse/Cattle Salt rock, Every vitamin/mineral complex for humans and is an addative for turkeys to relax the arteries, preventing a heart attack from rapid growth.

[@bgbthabun627]

@@DarkLinkAD I understand, and all i have access to is the internet, so i suggest that you google "copper being removed from brake pads". and while copper is necessary for humans, it is well known as an effective agent used to prevent sea creatures from attacking boats.

[@DarkLinkAD]

@@bgbthabun627 I learned that information before the internet was a publicly available thing, farm work. If you have a study to reference from a reputable source such as PUBMED, ill read it. Im not much for google propaganda though

[@rossbryan6102]

USING MY EXPERIENCE ON USA RAILROADS , I WORKED IN THE TIMES THAT WE CONVERTED MOST ROLLING STOCK FROM CAST IRON BRAKE SHOES ON WHEEL RIMS TO COMPOSITION BRAKE SHOES! IT WAS FOUND TO BE NECESSARY TO REDUCE THE PRESSURE. THIS WAS DONE BY CHANGING BRAKE LEVER RATIO , OR BY USING SMALLER SIZE BRAKE CYLINDER SIZES! OVERALL IT DECREASED THE WEAR ON WHEELS! THE ONLY LOCOMOTIVES THAT NEVER WERE CONVERTED TO COMPOSITION SHOES ARE THE STEAM LOCOMOTIVES, BECAUSE THEY ARE NOT ALIKE ON DIFFERENT TYPES, AND TO MY KNOWLEDGE NO ONE MANUFACTURES THEM! HOWEVER SPECIALIZED METAL FOUNDRIES STILL CAST THEM ! KEEP THEM ROLLING BROTHERS!! 👍👍

[@trentcard]

Don't forget the aluminum and copper both feel hot BECAUSE they cool off quickly-your hands feel the increased heat that they give off! Brakes just get that hot, even fast conductivity doesn't make it any more bearable to touch after removal.

[@wadz668]

Really love your channel! You guys do some amazing experiments on cars and it is always fun to watch!

[@raven4k998]

now you know why brake pads aren't made completely out of aluminum now as they have way too much bite for braking

[@simonallan9941]

Yes aluminum binds with steel pretty well even when cold, but against the iron rotor it wouldn't take much to get hot enough to melt and bind with the cast iron. brake pads are designed to not grip much so as to last longer and not cause an inconvenience like a crash 😂

[@sinegra30]

In my country we use bronze and brass plated clutches and brakes for race car applications

[@DaveFromColorado]

I would love to see you use copper for friction material on a clutch.

[@andrewdunbar5335]

Aluminum pads have a major problem. The freshly exposed surfaces instantly oxidize to form a thin layer alumium oxide aka corundum. This can wear out the disks prematurely.

[@MVP11489]

You should try brass, ceramic, rubber (like a piece of a tire), maybe even stainless steel and titanium

[@nerd1000ify]

Bicycle brake pads are usually rubber. They work very well against aluminium rims but tend to be a lot less effective when wet.

[@SJR_Media_Group]

Copper transfers heat better than Aluminum. That is why it is used in high end cookware. You can buy 'semi-metallic' brake pads, but you can't buy 'solid metallic' brakes pads for obvious reasons (don't work very well).

[@yodasbff3395]

Interesting experiment. 👍

[@devildesignscustoms]

I'd like to see them try Australian bush mechanics replacements made out of redgum wood

[@skylinefever]

I like this. BBC Top Gear encountered aluminum brake rotors in the "Communist cars" episode. They said aluminum has the braking properties of cheese. Stay weird, Garage 54. Never stop being weird.

[@partciudgam8478]

BBC Top Gear is as reliable as a honest politician on campaign... They were forcd to admit they "staged" (american english is faked) the Reliant Robin rollovers, and the Tesla failures... If they knew Jack sh*t of cars, this episode wouldn't have existed, as Russia was part of the producers of commie cars.

[@Matthew-wj8cm]

It was the rear brake drums on a Lada Riva. They're made of aluminium

[@fatjaysgarage]

These guys are excellent fabricators. Id love to see them build a fleet of lada race cars and race them

[@mememan2344]

Yeah they should make some that include a combination of the best of their ideas over the years, fully tuned and go head to head.

[@amdintelxsniperx]

copper pads do exist . however they are adhered and mixed with carbide so they dont wear fast . they used to use them in race cars

[@christophermarshall5765]

I've used heavy duty pads on one of my cars. Those had copper in them.

[@milandjuric3119]

Buy a lot of those diamond drill bits or diamond disks for cutting floor tiles. Make them into brake pads

[@ChieFChalinOLarssoN]

LEAD breakepads would be interesting. I think that would grip better on the disk.

[@josejuanrosales3614]

Man imagine doing tungsten carbide break pads!! That would be epic to see

[@MrCheesywaffles]

You'd be almost just wearing the rotor instead of almost only wearing the pads as they're supposed to. Could be interesting, if you could cast/machine tungsten carbide into the correct shape. Easier said than done given it's high melting point and hardness.

[@josejuanrosales3614]

@@MrCheesywaffles yeah for sure is almost impossible to melt one of the most retractable metals in existence

[@texasslingleadsomtingwong8751]

Be expensive , if you could get some sintered somewhere . I'd like to see clean rotors against brass , steel , and titanium ( Russia has alot more than we do in the states.).

[@andrewdunbar5335]

They would simply wear away the disk but have very little stopping effect.The ideal brake pad material is *soft* with good thermal characteristics.

[@trenthollifield6969]

Love garage 54

[@douglasthompson2740]

Just one good interesting video after another. Bravo!

[@VinylToVideo]

I would guess copper. Aluminum is light and more malleable, though copper is pretty malleable too.

[@IustinianP]

11:51 that moment when you see a pothole and hit the brake pedal😂😂

[@robertborgeson1821]

Aluminum with lubricant. It wouldn't be ideal in the real world because you would constantly have to relube and clean dirt. But I am just curious from a performance standpoint. I would THINK the lube/oil would help with cooling, the initial over bite, and the fusing. Would have to see how it affects stopping power though. In my mind with how aggressive they bite, even with the lube, just apply more pressure and they will still go to full lockup

[@michaelchapman1358]

That rim and tire just laying down taking a nap

[@anibalbabilonia1867]

That was a great experiment! You guy’s never seize to amaze me!👌😂👍that was awesome!

[@swandonovan]

Cease

[@crowvelle]

Cease... but yeah, I agree!

[@shawbros]

@@crowvelle I think it was intentional.

[@crowvelle]

@@shawbros Man good catch, I completely missed it, thanks. 😂

[@LG1ikLx]

You should have done stock pads for comparison. Great video thou!'

[@groenevinger3893]

Great video as always!

[@captidgas]

im guessing the aluminum was 6061 i wonder what 7075 vs 7050 vs 2024 or maybe even 2219 if you could find any of that

[@Reziac]

Use whetstones... invent the self-machining rotor ;)

[@mytebetme]

How about carbon fiber brake pads? Or carbon fiber rotors?

[@nerd1000ify]

Carbon fiber pads would do a wonderful job of grinding down your rotors, carbon fiber is usually very abrasive. As for the rotors themselves, I think a normal carbon fiber composite would suffer failure of the resin due to heat. However carbon fibers are often used as a component of ceramic rotors used in the brakes of high performance cars and aircraft.

[@xminusone1]

Tyres with the nails are locking more easily than those without nails. You may consider this.

[@you-dont-know-me]

TRY making Mechano Wheels (set of 4 wheels allows car to move in any direction or to rotate perfectly)

[@SV-cg3sk]

slotted and drilled brake pads now!

[@15lumen]

Great, interesting video. Also great editing.

[@Jagermonsta]

the aluminium wasn't melting in order to stick to the steel, it's simply a softer metal and gauled up the surface of the rotor.

[@pablojones5613]

It would be interesting to what cast iron brake pads would do on cast iron rotors.

[@raven4k998]

what about gold much cheaper than copper🤣🤣🤣🤣🤣

[@shanepowers7566]

Thank you.

[@Neovo.Geesink]

The copper and aluminium does not cool fast. That is a Misconception. They both conducht heat very well, and that is why they are used as a cooler (Heatsink). By using finned copper and aluminium blocks with a fan, they can really get things cool, so thats why they "cool things fast". Theyselves will stay allmost hot the same time as an identically formed block of Iron or Steel.

[@teoflores4088]

They make brass for side by sides and 4wheelers

[@therandomman6647]

Hah! I was just watching the previous video when this popped up

[@Fpvfreaky]

Carbon fibre would be good to test.

[@MrVeryCranky]

Try magnesium brake pads

[@mehrshadvr4]

Copper and bronze act like lubricant. That’s why they use them for bushings.

[@bennyboyy7]

Copper makes more sense than aluminum just because it's a little harder and I think has a higher melting point. Could only imagine modern abs system with these pads. Before I watched all the way through I was thinking the copper would be a better emergency back up. The way aluminum shears too is much more severe than copper.

[@MRPricks]

This Chanel always has me pinned to my seat great content as always.

[@ambersmith6517]

good testing !

[@tyler34r]

Two qualities for the video 360p or the paid enhanced bitrate for youtube premium. I'm already using youtube, revanced extended to disable ads.

[@stevenfaber3896]

Can you do some more tests for "things that can survive a siberian winter"? Would be curious about these types of things.

[@bitkarek]

wow a real science and engineering! :)

[@joebloe9901]

Although aluminum is soft, aluminum oxide is right next to diamond on the hardness scale. Aluminum oxide forms in nano-seconds. Machining aluminum dulls your cutting tools pretty quick because of the oxide. Aluminum makes a horrible bearing surface.

[@sjv6598]

3:40 bro sounds like an eBay turbo 😂

[@davidbowser2395]

Should try carbon fiber rotors or pads strong and light.

[@samuelbean9928]

So what do the major brake pad suppliers use on their full metallic pads? I'm sure it is metal but of a powdered construction. I don't know but I would like to see if you could buy your own lining and reline your own pads. In the old days here in the states you could get linings for brake shoes. Sure there would be issues with some jackleg not doing it right but...

[@DarkLinkAD]

Ceramic and carbon mostly, depends really.

[@bt3411]

Steel, copper, ceramic, kevlar are some common materials, all bound in a carbon compound

[@clarkpink1955]

Love these guys

[@4BillC]

It doesn't matter what pads you're using, if the tire lock up, stopping distance will be the same.

[@thefreedomguyuk]

That's why pads are dynamic, with the appropriate initial bite. In this way minimising the braking distance, and avoiding the locking. Anyway, ABS is your friend.

[@ionbusman2086]

Need to make some aluminum shoes for my bus it sounds like lol

[@joshtessier5108]

It’s great how much the translator sounds like Kermit 😂

[@nascarsimracing1]

Yes!

[@ameenm7576]

Make an aluminum clutch disc

[@randomelectronicsanddispla1765]

Next, with some brake rotors made of aluminium as well

[@HunzalaRizwan]

You should also try brake pads made up of tungsten.

[@TheHortond]

Sintered pads are copper and organic material. You still have to break them in. 200 mile stop and go traffic.

[@EMNM22]

👍You should try brass pads or Nickel pads. 🤘😁

[@gergelytoth915]

Car manufacturers uses aluminium powder in sport pads for the better brake performance,the negativ thing this pads eats the disc soon,these pads needs harder discs than the normal.

[@ashiehakoto1490]

now try aluminum bronze brake pads. can you get the best of both by smelting 50/50 aluminum and copper into brake pads?

[@Psyrecx]

Sintered brake pads have copper in them for grip.

[@rayceeya8659]

The aluminum probably got super grippy because it work hardens faster not because of the melting temperature.

[@backslash_iii]

I want to see this done in a car with ABS

[@kylereese4822]

For sure a braking system part for a zombie apocalypse world... :)

[@fangthewarrior]

Magnesium brake pads, for the sparks!

[@austinball4343]

What is meant by "derailment" content in the aluminum? Silicon?

[@t77chevy]

try brass , is what us mud guys use on atv , southern Texas so sand eats up normal pads in pits

[@crowvelle]

Me when I fall off my bike: 11:14

[@thisdude2373]

Wonder what would happen if you used a copper aluminum alloy?

[@737Garrus]

I predicted the Aluminum Pads would be incredibly slippery, not at all effective at stopping the car, man I was wrong XD

[@supersmalls]

Can you try this same setup in a truck, something with a bit more weight to it

[@scott3065]

Your are awesome, love your creativity ❗ Greatings from Germany... 🤗

[@Aleks_Mechanics]

Notification Squad Have a nice weekend!🔥🔥🔥

[@the_kombinator]

Hah those pads look quite similar to MMC Hyundai Pony ones. *Edit wait you guys have TWO POT calipers? Nice!

[@adammosher1115]

Mix copper and ceramic and make a hybrid break pads

[@carsandguitars3894]

Would be interesting to try magnesium although quite dangerous…

[@Sciencegum5]

See if you can friction weld with a lada!

[@Hydrogenblonde]

Maybe try different types of bronze.

[@markcdeyoung3118]

That is a pretty sweet little rat ride you got there! 😁👍

[@trashyspeeds266]

Isnt it because they are softer metals?

[@jesusyeshuaelelyonelshadai6295]

Copper is good but generates too much heat absorbs too much will lock up calipers and burn up seals.... Copper ceramic will be good

[@brandonlee3875]

Make a clutch disc out of aluminum and copper

[@FeralDayASMR]

use new rotors for the copper and redo do that test as it is flawed since the rotors condition have changed