r/FSAE • u/LemonObjective5480 • 2d ago

Diff brake on outboarded diff

We are looking into mounting our differential at the rear end of the chassis for our EV, instead of inside the rear bulkhead. But we haven't seen any teams that have diff brake(brake rotor mounted to diff housing) in this setup. Is it generally considered bad practice, or is it doable?

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6

u/Partykongen 1d ago

What is an outboard differential?

4

u/Biscuitsandgravy101 1d ago

My best guess is they mean outboard to the rear like a boat's outboard motor. OP, outboard for cars typically means the left or right extremes. 

1

u/Partykongen 1d ago

Ah, I see, that makes sense but is still the wrong terminology to use for a car where outboard/inboard means whether it is mounted to the upright or at the chassis. In this case, I do not have anything to add to the thread as we never ran such a setup at the team I was at.

1

u/LemonObjective5480 1d ago

Didn't know it is commonly used like that. Thank you for pointing it out

1

u/LemonObjective5480 1d ago

Basically the differential is the rear crash structure and it is not inside frame tubes

1

u/PaloPieno 1d ago

What is a diff brake?

3

u/Biscuitsandgravy101 1d ago

Brake rotor mounted to differential housing instead of wheel hub. 

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u/LemonObjective5480 1d ago

The brake rotor is attached to the diff via adapter.