Here's another screens shot

 

Here he describes how the worn oil eventually causes wear on the ball bearing roll cage

 

Ok for the people who want to delve deeper into this issue.
I wonder if it's related to the grease being used is not enough for the abuse that evs actually place on the cv axle. Meaning the thermal properties is not high enough for constant e braking and hard acceleration.

Feature

www.stle.org

I asked gemini about this and got this result below.

For electric vehicles (EVs), heat buildup in the constant velocity (CV) axle is a significant concern due to the high and instantaneous torque from electric motors. This necessitates the use of specialized greases with superior thermal stability and consistency compared to those used in traditional internal combustion engine (ICE) vehicles.

Now the question remains, how to prolong the life of the cv axles?
Less hard acceleration, no one pedal driving. Manually replacing the grease inside the cv axle

 

I asked gemini

don't.
ANYTHING asked to an "AI" should be double and better triple checked.
it's been cleared that those have no clue of the actual value of the information they're collecting, and that in case of lacking infos they will very simply "make up" something that fits.

at the moment every time i've tried to use them i ended up using twice the time to check everything and always found significant errors.

 

Was there mentioned recommended grease?

 

No nothing on the comments about it yet. Maybe someone here who has vida access can provide that answer.

 

Now the question remains, how to prolong the life of the cv axles?
Less hard acceleration, no one pedal driving. Manually replacing the grease inside the cv axle
[/QUOTE]
I can see that rapid acceleration would have an impact, but how does OPD contribute? The stresses would be the same if you regen with OPD or brakes, right?

 

According to Gemini below


Yes, one-pedal driving can place more stress on the CV (constant velocity) axles and joints than traditional braking. This is because the stress is transferred directly to the CV joints during deceleration, in addition to the normal stress from acceleration. In contrast, traditional braking uses friction pads, which do not put a load on the CV axles.
How one-pedal braking stresses CV axles
One-pedal driving uses regenerative braking, where the electric motor acts as a generator to slow the vehicle and recapture energy. This process causes two key types of stress on the CV axles:
Bidirectional torque: Unlike a gasoline car, where the axles are primarily stressed during acceleration, an EV's axles are repeatedly subjected to significant torque in both directions—during both acceleration and regenerative braking. This back-and-forth force can cause more wear over time.
Cyclical mechanical load: During regenerative braking, the motors exert resistance on the axles, which can cause mechanical cycling on components like the motor mounts and CV joints.

I checked other sources to and one pedal driving does put more stress on CV axles but they should be built to handle it. How much can the components composed of it can handle before they wear out?

It appears the grease can't handle the stress but the components can?

 

Let’s please stop asking AI to make stuff up and try to consult actual experts? Pretty please…

 

It's correct on this occasion though, under regen the motor is slowing the vehicle so the stresses of that are transferred through the driveshaft to the wheels. This isn't the case under 'traditional' braking. I'm not sure it actually supports the 'watery' or broken down grease theory though, I'm more inclined to think the parts just aren't up to it.

<Edit>
Added traditional to braking for everyone that wants to point out EVs always use regen as if that's not the fundamental issue here.

 

It's correct on this occasion though, under regen the motor is slowing the vehicle so the stresses of that are transferred through the driveshaft to the wheels. This isn't the case under braking. I'm not sure it actually supports the 'watery' or broken down grease theory though, I'm more inclined to think the parts just aren't up to it.

This is in fact the case under braking. P2 uses blended brakes - pressing the brake petal means regen, unless you're mashing it so hard it can't regen enough to slow the car.

 

Even when using the brakes with OPD off, the car will use regen ... so not much of a difference there.

 

Jesus lads, we're talking about the differences between ice and EV braking.

 

If they had a batch of bad axles, they had a batch of bad axles. Does this predominantly affect earlier cars? Maybe they changed the parts for later models, especially in 2024 when they switched to more powerful rear motor and RWD. Anyway, I don’t think the addition of regenerative braking would put any more load than the outright acceleration of a performance model car drag racing, and that’s what they’re designed for…

 

PS2s are sold world wide. I was using red note and stumbled upon a guy named Tony, a ps2 mechanic. He posts videos of his repairs


Apparently, many of the drive shaft issues he has encountered are related to the oil losing its viscosity.

Do you have links to the videos? I think I may have a rear axle making some noise and could end up needing to do the replacement myself.

 

I speak Chinese and watched some of his videos. He's claiming that the wheel of fortune issue and the clicking from the front mid turn are both due to the failure of electroplating on the drive shaft, causing the oil to be exposed to the environment and lose viscosity. And P* hasn't done any redesign as of now. He did offer lifetime warranty for any repair done in his shop 🤣 Time to start a group buy and send him our stuff 😂

 

Fascinating. Thanks for the translation services!