Aluminum Brake Rotors

[blownb310]

Originally Posted by serialk11r

Aluminum's melting point is too low, though typical brake pads also don't work at high temperature either. With cast iron rotors + high temp pads, performance is pretty acceptable.

Yes, but we are talking about an EV with a hypermiler driving. The rotors never get hot. The car will stop completely without touching the brake pedal. It's difficult to keep the rust off of them because they are seldom even used.

[freebeard]

Originally Posted by oil pan 4

Aluminum brake drums have steel inserts

I know the thread is about rotors not drums, but oil pan 4 opened the door.

We progressively drill holes in brake drums – what will happen?

[Piotrsko]

Need to also post in the other thread.

[freebeard]

There's another thread?

Please do post there.

[rmay635703]

There are OEM Cars with OEM aluminum rotors

What was used by Honda?

For coorsion prevention stainless is best

Aluminum would probably work fine on the rears on pretty much every car in the road.

Also for temperature aluminum cools much faster

[Grant-53]

I sold auto parts for a decade and the better rotors used nickel as an alloy. A EV is usually much heavier from battery weight. Regen and dynamic braking circuits save energy. Hydraulic brakes are also needed to stop quickly in an emergency. Even if you don't fully cross drill the rotor a pattern of shallow holes helps.

[cRiPpLe_rOoStEr]

Originally Posted by rmay635703

There are OEM Cars with OEM aluminum rotors

I only remember OEM aluminium discs on motorcycles.

Aluminum would probably work fine on the rears on pretty much every car in the road.

I would trust aluminium drums more, as they're less prone to bend than a disc, and aluminium is usually softer than steel.

Also for temperature aluminum cools much faster

Easier heat rejection was quite advantageous to overcome brake fading when Lada resorted to aluminium brake drums.

[Gasoline Fumes]

Originally Posted by rmay635703

There are OEM Cars with OEM aluminum rotors

What was used by Honda?

Which Honda? The 1st gen Insight had aluminum front calipers, and aluminum rear drums with a steel liner. Nothing special about the rotors.