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Today is last day for homologation, if they didn't fix vibration, you think they could finish races? Does FIA allow to make corrections on engine/battery before race 6?PlatinumZealot wrote: ↑28 Feb 2026, 22:46The vibration issues is harkens back to the Mclaren days.
It is two fold. The engine is producing vibrations at certain frequencies that is causing resonance, or underdamped vibrations at one or more places in the chassis and this is shaking the battery compartment.
Two things can happen: modify the engine to counter vibrations with tuned stiffness in the gears, mounts bearings etc or with dampeners. Could be the MGUK or the oil pump or the cam drive.. Or from combustion.. We do not know.. Or the second thing is obviously to modify the chassis side by either increasing stiffness to raise the naturalfrequency above that of the vibrations from the engine or add a few dampers here and there.
Both solutions will not be trivial!
so you can do what/when ever you want if is not reliable?
As long as it is a legitimate reliability issue, then you can make modifications for reliability purposes. It is a gray area.hsg wrote: ↑01 Mar 2026, 13:53so you can do what/when ever you want if is not reliable?
Who deicide if this is performance or reliable problem?
The FIA does, but they state in the regulations that they may send the proposed changes to all the other manufacturers for verification. There is also pressure on the other manufacturers to approve reliability updates, because if the manufacturer requesting the changes falls 2% or 4% behind in performance, they will be allowed to bring significantly more resources to bear on the project.AR3-GP wrote: ↑01 Mar 2026, 14:00As long as it is a legitimate reliability issue, then you can make modifications for reliability purposes. It is a gray area.
The main pressure is other manufacturers rejecting your own request when your turn comes ( a.k.a mutually assured destruction). Honda can always put themselves into ADUO status at any time by choosing to operate the PU at a level 2% below the others.diffuser wrote: ↑01 Mar 2026, 15:15The FIA does, but they state in the regulations that they may send the changes to all the other manufacturers for verification. There is also pressure on the other manufacturers to approve the reliability updates, because if the team requesting the changes falls 2% or 4% behind, they will be allowed to bring significantly more resources to bear on the project.
I agree that is also pressure. Not sure if one is greater or lesser. Just happy there are more options and therefore makes it more difficult to keep a manufacturer down using the regs.AR3-GP wrote: ↑01 Mar 2026, 15:16I don't think that's the main source of pressure. Honda could just run low conservative engine tunes to get ADUO after 6 races if they really wanted it. The main pressure is other manufacturers rejecting your own request when your turn comes.diffuser wrote: ↑01 Mar 2026, 15:15The FIA does, but they state in the regulations that they may send the changes to all the other manufacturers for verification. There is also pressure on the other manufacturers to approve the reliability updates, because if the team requesting the changes falls 2% or 4% behind, they will be allowed to bring significantly more resources to bear on the project.
The K can hardly be the origin. There's nothing to vibrate there. The ICE inherently vibrates, so it's likely transmitted to the battery. Whether it vibrates more then intended is a question mark.PlatinumZealot wrote: ↑28 Feb 2026, 22:46Two things can happen: modify the engine to counter vibrations with tuned stiffness in the gears, mounts bearings etc or with dampeners. Could be the MGUK or the oil pump or the cam drive.. Or from combustion.. We do not know.. Or the second thing is obviously to modify the chassis side by either increasing stiffness to raise the naturalfrequency above that of the vibrations from the engine or add a few dampers here and there.
Both solutions will not be trivial!
They have no say in it. It's completely the FIA's decision.AR3-GP wrote: ↑01 Mar 2026, 15:16The main pressure is other manufacturers rejecting your own request when your turn comes ( a.k.a mutually assured destruction). Honda can always put themselves into ADUO status at any time by choosing to operate the PU at a level 2% below the others.diffuser wrote: ↑01 Mar 2026, 15:15The FIA does, but they state in the regulations that they may send the changes to all the other manufacturers for verification. There is also pressure on the other manufacturers to approve the reliability updates, because if the team requesting the changes falls 2% or 4% behind, they will be allowed to bring significantly more resources to bear on the project.
I think the idea of ADUO is much overrated. It basically allows additional structural changes, while the most performance relevant parts are anyways in the update schedule for 27 and 29.
Huugh!!mzso wrote: ↑01 Mar 2026, 15:44The K can hardly be the origin. There's nothing to vibrate there. The ICE inherently vibrates, so it's likely transmitted to the battery. Whether it vibrates more then intended is a question mark.PlatinumZealot wrote: ↑28 Feb 2026, 22:46Two things can happen: modify the engine to counter vibrations with tuned stiffness in the gears, mounts bearings etc or with dampeners. Could be the MGUK or the oil pump or the cam drive.. Or from combustion.. We do not know.. Or the second thing is obviously to modify the chassis side by either increasing stiffness to raise the naturalfrequency above that of the vibrations from the engine or add a few dampers here and there.
Both solutions will not be trivial!