Plaid Vibration around 38-42MPH....

[n2mb_racing]

For my Plaid, it IS the half-shafts causing the aforementioned vibration. It completely disappeared when they replaced both half-shafts. It did return, however, about 1,500 miles later. Unless they replace another component along with the half-shafts, and that component is the source. So in my case, it could not be software/firmware related, not wheels/tires, not steering linkage/dampeners, etc. the only thing Tesla replaced were the half-shafts and it fixed the vibration problem. Albeit temporarily.

I agree. It seems like the half shafts vibrating under light load and under extreme angles.

Using track mode with rear bias presumably eliminates any torque going through the half shafts, though they are still spinning. Somehow they only vibrate when there is torque going through them, which presumably is why they don't vibrate when coasting at 40-50 mph.

They also don't vibrate when you reduce the CV joint angles by lowering the car down.

I wonder if adding more grease the to the CV joints would dampen out the vibrations?

 

[lbowroom]

I agree. It seems like the half shafts vibrating under light load and under extreme angles.

Using track mode with rear bias presumably eliminates any torque going through the half shafts, though they are still spinning. Somehow they only vibrate when there is torque going through them, which presumably is why they don't vibrate when coasting at 40-50 mph.

They also don't vibrate when you reduce the CV joint angles by lowering the car down.

I wonder if adding more grease the to the CV joints would dampen out the vibrations?

Grease won’t be thick enough to do that. The clearance or lash in the shafts won’t vibrate as long as there is bias in one direction or the other. Light throttle application is where the shafts are in transition from front bias and reverse bias and float in that clearance. Lower shaft angle helps negate this transition zone between forward and reverse bias. At least that’s what my intuition tells me.

 

[n2mb_racing]

Grease won’t be thick enough to do that. The clearance or lash in the shafts won’t vibrate as long as there is bias in one direction or the other. Light throttle application is where the shafts are in transition from front bias and reverse bias and float in that clearance. Lower shaft angle helps negate this transition zone between forward and reverse bias. At least that’s what my intuition tells me.

Seems reasonable, but I don't understand why other cars don't have this problem, like my P3D or even my prior P90D model S. How did the change in the half shaft design introduce this problem?

 

[jebinc]

Seems reasonable, but I don't understand why other cars don't have this problem, like my P3D or even my prior P90D model S. How did the change in the half shaft design introduce this problem?

Three/two carbon sleeved motors? Induction vs AC synchronous drive units?

 

[WilliamG]

The bottom line is that Tesla is sweeping this under the rug, and none of us have managed to get any real traction in the media about it. Can you imagine if this problem afflicted say… Porsche? There would be rioting in the streets.

 

[n2mb_racing]

Three/two carbon sleeved motors? Induction vs AC synchronous drive units?

The plaid motor is basically the MYP motor, except wrapped in carbon. Even the control electronics say "Model Y" on them.

 

[jebinc]

The plaid motor is basically the MYP motor, except wrapped in carbon. Even the control electronics say "Model Y" on them.

Well, my late 2021 MYP has zero vibration. Perhaps the high location of the front DU on the S. Recall, the original old design did not consider a front DU. That was added later in the lifecycle…

 

[n2mb_racing]

Well, my late 2021 MYP has zero vibration. Perhaps the high location of the front DU on the S. Recall, the original old design did not consider a front DU. That was added later in the lifecycle…

Right. That seems to be a problem. But, my 2016 P90DL model S didn't have any vibrations.... So, it's really baffling.

 

[lbowroom]

Right. That seems to be a problem. But, my 2016 P90DL model S didn't have any vibrations.... So, it's really baffling.

My 2021 Plaid also doesn’t have vibration lowered or not which is also confounding data.

 

[Eclipso]

I have sent Elon this link a few times the last few days on twitter, who knows if he has seen it but if enough of us were to do so maybe it would garner his attention?

 

[Christine69420]

Isn't Elon driving a Plaid already - so he is probably aware?

 

[jebinc]

I figured it out! They put the vibration in on purpose - to give us the authentic ICE feel!

Factory-Installed Fake Engine Sounds and Vibrations for EVs Are Almost Reality - Chargerzilla

Search Electric vehicle charging stations, rent your home tesla/ev charger and earn income.

chargerzilla.com

 

[Hayseed_MS]

Tweet to Elon that "the best vibration is no vibration".

What if you had something heavy (and not moving) in the frunk?

 

[jebinc]

I figured it out! They put the vibration in on purpose - to give us the authentic ICE feel!

Factory-Installed Fake Engine Sounds and Vibrations for EVs Are Almost Reality - Chargerzilla

Search Electric vehicle charging stations, rent your home tesla/ev charger and earn income.

chargerzilla.com

 

[Eclipso]

Isn't Elon driving a Plaid already - so he is probably aware?

Yeah, he is, do they all have it? How big of a sample size do we represent on the forums? Brought it up again a few min ago seeing how he is active on twitter as I type.

 

[jebinc]

Yeah, he is, do they all have it? How big of a sample size do we represent on the forums? Brought it up again a few min ago seeing how he is active on twitter as I type.

Many. Over 50% report it per the poll I sent up last year in a different thread. I bet his Plaid “had” the vibration at one point.

@WilliamG

 

[yerEVan]

Oddly sandy munro’s did not. Unfortunately, because he would have figured out why it was happening.

 

[Christine69420]

Anyone here living close to Sandy?

 

[N0sferatU]

Isn't Elon driving a Plaid already - so he is probably aware?

I'm sure his was hand built and has no panel gaps and the like.

 

[yerEVan]

It was actually donated to him by a plastics company from the UAE for tear down.