Honda Power Unit Hardware & Software

[PhillipM]

GP bikes don't tend to have huge G-force impacts tbh, they tend to skip and roll through the gravel and slow down much more gradually.

[Jolle]

GP bikes don't tend to have huge G-force impacts tbh, they tend to skip and roll through the gravel and slow down much more gradually.

true, but when they hit the fence, with high forces, normally the engine is still usable (they also can only use a couple of engines per season).

[Hoffman900]

I don’t think you really understand what I am saying or what is happening in a 51g + impact.

MotoGP bikes rarely if ever see anywhere near that gforce. If they do, they usually rupture the tank and burn up, in addition to be entirely destroyed.

Also, MotoGP bikes see at most half the g forces a F1 car sees on tracks.

If someone can point me to a 51g bike impact where the engine was salvageable, then please share. “High forces” tells me nothing.

The issue with the block flexing is they are strong in the planes that the car puts forces into it while racing. Not a sideways / backwards 51g + shunt.

[Jolle]

I don’t think you really understand what I am saying or what is happening in a 51g + impact.

MotoGP bikes rarely if ever see anywhere near that gforce. If they do, they usually rupture the tank and burn up, in addition to be entirely destroyed.

Also, MotoGP bikes see at most half the g forces a F1 car sees on tracks.

If someone can point me to a 51g bike impact where the engine was salvageable, then please share. “High forces” tells me nothing.

The issue with the block flexing is they are strong in the planes that the car puts forces into it while racing. Not a sideways / backwards 51g + shunt.

yes you're right, in my mind they are into the walls more then I thought, guess my mind is still in old style

[AMG.Tzan]

I can't really think that after a 51G crash everything has has survived!

The engine can survive the crash but still what about the rest of the Power Unit (most notably MGU-K and maybe Battery Pack) and even the gearbox! I haven't heard anything about the gearbox tbh! What do you think?? Has it survived??

[Hoffman900]

It depends. We should know by early next week.

Transmissions have the same issue with tolerance stacking internally in a crash. Though I believe they can replace that without incurring a penalty.

This stuff is pretty funny. You have a precise machine, spinning at thousands of revs, and give it a 51g jolt in any sort of weird plane. It’s hard to predict what’s going to happen.

[PlatinumZealot]

The engine didn't take a direct hit to the tyre wall so I think it should be OK. Mostly side impact so it may not have seen the full 51g.

[Jolle]

Wondering, with all the forces going on in a PU, and the vibrations, hitting curbs with the floor… isn’t 51G peanuts?

[Hoffman900]

Wondering, with all the forces going on in a PU, and the vibrations, hitting curbs with the floor… isn’t 51G peanuts?

It isn’t.

The forces are very well controlled in the direction they are designed to handle, hard to say in a hit.

As I said, hits can be a crap shoot. I’ve seem cars go into the wall and something like the rear differential is fine, the same car with a hard bump draft breaks the ears off the rear diff.

[Jolle]

Wondering, with all the forces going on in a PU, and the vibrations, hitting curbs with the floor… isn’t 51G peanuts?

It isn’t.

The forces are very well controlled in the direction they are designed to handle, hard to say in a hit.

As I said, hits can be a crap shoot. I’ve seem cars go into the wall and something like the rear differential is fine, the same car with a hard bump draft breaks the ears off the rear diff.

I mean, because it's designed to be a stressed member, and not as in a road car, mounted in rubber.

[Juzh]

I can't really think that after a 51G crash everything has has survived!

The engine can survive the crash but still what about the rest of the Power Unit (most notably MGU-K and maybe Battery Pack) and even the gearbox! I haven't heard anything about the gearbox tbh! What do you think?? Has it survived??

Gearbox can be replaced without penalty if you DNF. It's the main reason you'll see teams who are out of the points randomly retire cars with few laps to go with no apparent issues.

[sosic2121]

I don’t think you really understand what I am saying or what is happening in a 51g + impact.

MotoGP bikes rarely if ever see anywhere near that gforce. If they do, they usually rupture the tank and burn up, in addition to be entirely destroyed.

Also, MotoGP bikes see at most half the g forces a F1 car sees on tracks.

If someone can point me to a 51g bike impact where the engine was salvageable, then please share. “High forces” tells me nothing.

The issue with the block flexing is they are strong in the planes that the car puts forces into it while racing. Not a sideways / backwards 51g + shunt.

Anyone knows if Vinales engine survived that crash on Red Bull ring? He commented that he was worried about the engine, but I don't know what happened with it later.

[etusch]

Vinales engine big probably took direct hit during that crash more than one

[anthonyfa18]

It look like max pu will be replaced for the race as honda has found a new crack on it overnight, but According to Red Bull it look like it can be fixed back in Japan

[Pany]

With 3rd engine so soon, the title is flying away. Mercedes is repeating what they did to ferrrari starting from summer. New upgrades, super engine turned on and final superiority