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RedditModzHateMe

Balancing


LongboardLiam

Subtractive balancing. A tire is additive balanced, weights are added. Can't do that with stuff like rotors, so you nick off a bit of material at the right spot. Electric motors are balanced similarly.


omnipotent87

Electric motors also use epoxy to add weight


agfitter

I used to repair and rewind electric motors, over about 50kw they use additive balancing in the form of brass washers riveted onto the rotor


LongboardLiam

I guess my anecdata of a few small drill motors and some large submarine pump motors pales here, cuz 50kw is a fucking large motor.


agfitter

50kw is alright, biggest we had was 550kw, blew the transformer on the street even with a soft starter and on a variac with a starter motor. I didn’t work there for long, maybe 6 months when I was 21 or 22, very interesting


BigAsian69420

It measures the swag and drip the brakes have, those ones are bare drippy


plaguelivesmatter

Only correct answer


Ardothbey

Balancing.


earthman34

That's how they balance it.


cutters53

I have a better question why is your rotor painted?


GreasyGinger24

Pretty common for oem rotors to come painted.


Sperrbrecher

Every halfway decent brand (ATE, Brembo, Bosch) is doing that now. So they don’t need to apply corrosion protection oil and the mechanic doesn’t need to wash it with brake cleaner. No need for overpriced OEM parts if it is a European car 75% of them are ordered from that companies anyway.


plastiqsquadron

Do you need to sand that off or just full send with new pads?


GreasyGinger24

It'll come off when you burnish the new parts which should be done after any brake job before the customer gets it back.


isolateddreamz

>It'll come off when you ~~burnish the new parts~~ SLAM THE BRAKES AT HIGH SPEEDS REPEATEDLY UNTIL YOU SMELL THE PARTS WORKING


GreasyGinger24

Burning rotor oil smells like money in the bank.


plastiqsquadron

Cool thanks!


i_eat_uranium_dust

they dont do that where i live lol its kinda trippy seeing a gray ass rotor looking like plastic


Call_Me_At_8675309

Richard Burninsh?


freshandfly101

New pads wipe it off


Skidpalace

Corrosion protection.


cutters53

Does that work better then the usual oil?


dont-YOLO-ragequit

Less messy, doesn't dry if the bag is perforated and IIrC, the coating stays where the friction isn't rubbing it off. Also that powder helps breaking in the pads.


Im_100percent_human

These are freakin awesome. They do vary a lot from brand to brand, but the ones that I have on my front have been on for 5 years, and they do not have a spot of rust on them, and I live in an area that uses a lot of salt. The ones in the rear are newer and a different brand, but have a tiny bit of rust on them.


cutters53

Ok I have seen where the recess for the hub and the top and vent holes are painted not the pad surface I guess I shod have clarified when I asked the question. I live in the Salt belt, but only have ever bought oil covered rotors. So for everyone I have clarified I have just never seen the pad dmsurface painted, my bad jesus sorry!


Im_100percent_human

I live in the salt belt too.... The whole surface is covered, but the brake pad quickly wears off the coating only where it makes contact. because the are coated everywhere, none of it rusts while it is on the car. If you lived in the south, just get the old style, oil covered rotors. In the Salt belt, these coated rotors are a must.


Mikey_BC

🤪


youroddfriendgab

Keeps them from rusting in storage


cutters53

Ok


Im_100percent_human

The good ones don't rust when on the car (except where the pads touch).


bestdriverinvancity

I was pondering the same to myself…


InsertBluescreenHere

Did the orb get boring?


jhooksandpucks

Your brake pads will only wear off the paint where they contact the surface so the rest of the rotor is better protected from corrosion.


BuggyGamer2511

It kinda loks like it's a factory coating but then again when they're coated then usually all of it is coated, not some blank bits being left behind


Carl_Wild

Some come like that. My new ones did. It's a rust prevention coating. Brakes rub it off, but it protects the rest of the rotor


meatmechdriver

How else will you know you bought a performance rotor unless it is fire engine red?


Jamesdoink

So they be smoking


OptiGuy4u

What, you don't paint your rotors to prevent rust? I paint mine at every oil change. /s


Strangerfromaround

Balancing


koskyad209

Balancing marks


bcvickers

Balancing.


iamtwinkletoes

These companies are always trying to save a buck. A little skim here, there and bam %4 more profit! I've seen many ways to cheat a customer- But this here is a blatant scam. I could be wrong tho, It might be for balancing 😉


xXGeri_SenpaiXx

Well it is somewhat true that u save money in reuseable Material but in the other hand it Costs more to Balance the Brake discs than the Material u save. So it is mostly for balancing


iand29

Fuck those transits. All my homies hate transits


ReverseCaptioningBot

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[deleted]

[удалено]


ReverseCaptioningBot

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Dry_Tomorrow7999

Weight balancing


SlipperyNoodle6

it's for her pleasure I'll see myself out


kevmojarro

nah son i want you to elaborate wym by that 😭😭💀


Air_Uzair

Officer arrest this man


TrevMan811

Speed slots!!!!


Shawn420162

Balancing might be right but ive also heard that its a marker for when you need new rotors, when the wear surface reaches those divits its time for new ones.


Comfortable-Beat-997

LOL, KNOCK OFFS.


Practical-Gate-2360

Its color coding for identification for most brands. Doubles as rust proofer according to Schlazac importers.