MotoGP vs Moto2 vs Moto3 Front Brake Comparison.

[u/NRV__]

[u/Aidenairel]

Even the Moto2 brakes make me go hnggghh, never mind the GP bikes 😍

[u/blind_ruler]

Moto2 needs to chill out man

[u/Vegetable_Problem_49]

Moto2 looks like some sort of Transformer shit. Lol. Gotta love the tech.

[u/rustoeki]

Moto3's are barely bigger than the discs on my pushie.

[u/hoody13 → u/rustoeki]

Was just thinking the exact same thing

[u/takinie44]

To the untrained eye, Moto2 takes the cake

[u/Altair13Sirio]

Motorcycle brakes are so sexy

[u/MANllAC]

It's interesting how the moto2 and gp are both 4 pot calipers, I would imagine they're not that far apart in stiffness either. Probably one is just way more expensive with bespoke cooling per constructor.

I guess it does make sense, besides the gp being ceramic. They're not hugely apart in weight so relatively same stopping power from the caliper would be desired.

[u/torqu3e → u/MANllAC]

They are actually quite massively different, to enumerate a few:

- Moto2 calipers are the same as what WSBK runs. The Brembo GP4 series, there are a few variations under that but mostly that family. Think $4k to $10k for a set of calipers and any old plebe with money can technically get them.

- Rotors are steel per regulation. If the team is running Brembos they'd be the T drive or the new finned T drives, again same as WSBK. Unsure if Moto2 uses the larger 330 mm rotors since their speeds are lower than that of WSBK. This restricts ideal operating range to 300~400*C with a total window of 100~650C.

- Pads would most likely be Z04s which is what WSBK also does run, or some combination there of depending on rider preference.

- Motogp on the other hand has carbon carbon rotors (6~8 months process to make one) which can be as large as 355 mm. Their operating temperature is about 850C with tolerance up to about 1000C at which point they literally start oxidizing aka burning in air during braking.

- Matched (as in the rotor and pads are married, both go together in pairs) carbon pads (custom, bespoke, unobtanium)

- Calipers are prototype spec. That's where Brembo does a lot of the development work. Some of the differences are lithium-aluminum or titanium pistons. Have also seen some weird piston size combination of 34 and 38 mm pistons (regular are 30s) but don't have conclusive info. The caliper body may also have lithium-aluminum alloys which the lower class components don't have.

Here's a bit of a newish blurb from Brembo about this https://www.brembo.com/en/company/news/brembo-motogp-world-championship-2023

[u/MANllAC → u/torqu3e]

What about stiffness of the caliper? Is there information about that too or is it all speculation? Are there any gp bikes with more than 4 pots per caliper or no?

[u/torqu3e → u/MANllAC]

Not like I have access to the finite element analysis from Brembo so ¯_(ツ)_/¯. What I do know is that GP generally has fairly low peak brake pressures at about 10 bar which indicates an extremely efficient system so the flex has to be minimal and its important for rider feel.

All GP teams run Brembo brakes which means pretty much the same caliper or within a one year model of each other. Nissin dropped out of GP a bunch of years back. Brembo is the sole supplier now.

[u/MANllAC → u/torqu3e]

So aside from cooling fin differences per constructor bike, they all pretty much run the same iteration?

[u/schnippy1337]

Why they have a michelin gp 2 on the moto gp bike? That tyre will not last one lap and overheats

[u/built_FXR → u/schnippy1337]

They use regular rubber when transporting the bikes.