emailforbrett
Member
Just what this thread is about. Slight vibration in yoke and accelerator pedal when cruising steady or slight acceleration during the 45-55 mph region.
-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
"Refreshed" Model S model VIBRATION tracking and information thread!!!
- Thread starter jebinc
- Start date
WilliamG
Hinge Fanatic
OK, just wanted to make sure. We've had a few experiencing something quite different, and this thread is a maze.
At this point, who knows if Tesla got a bad batch of shafts that were manufactured inconsistently, same with the universal joint of the shafts. The initiators of a resultant vibration issue in shaft style of power transmission systems are over angling of the joint, concentricity of the shaft assembly outside of specifications in static and or dynamic.
The output of the final drive and motor could, if not retained by a solid mounting that arrests kinetic loads and NVH, initiate the vibration. Same with the driven hub in all aspects. Amazing test of engineering for what is usually taken for granted when using the power of these cars. Whish I could get ahold of a schematic of the power train or hands on while on a lift!
To all that unfortunately have to have this shaft replacement done in the future, please try to get a picture of the shafts and post for future reference!!
Some mechanics just replace parts, some do that and wonder why...
Which one do you want to talk to?
The output of the final drive and motor could, if not retained by a solid mounting that arrests kinetic loads and NVH, initiate the vibration. Same with the driven hub in all aspects. Amazing test of engineering for what is usually taken for granted when using the power of these cars. Whish I could get ahold of a schematic of the power train or hands on while on a lift!
To all that unfortunately have to have this shaft replacement done in the future, please try to get a picture of the shafts and post for future reference!!
Some mechanics just replace parts, some do that and wonder why...
Which one do you want to talk to?And part of it is going to be because the steering rack is now hard mounted to the sub-frame where that has never been the case in the past. (Something Munro commented on.) So whatever NVH that exists is going to be amplified into the cabin compared to how things were on the old Model S. So it very well could be a characteristic of the refresh Model S.
That is why I assumed (dumb'me, dumy), that Tesla would be using steer by wire, especially to have variable ratio dynamic yoke steering.
I did see a clevis style motor mount above the centerline of final drive output in the Munro video. To me, I would want a diagonal link mounted in opposition, 12 o'clock - 6 o'clock, both mounts equally distant to the centerline of output / inner drive shaft coupling.
Good news! DriveTesla is giving our comcern the light of day! Be sure to reply via the “tips” link at the end of the article. I suspect they will publish another after they get flooded with tips!
Refresh Model S owners growing increasingly frustrated with vibrations that Tesla has not been able to fix
According to dozens of refresh Model S owners (both Long Range and Plaid) on the TMC forums and many more on Reddit and Facebook, the electric sedan suffers from a pronounced vibration in the accelerator […]
driveteslacanada.ca
@driveteslaca
Last edited:
This is a 100% suspension geometry issue, and until that changes it will continue to be a problem. The angle of the axels is asymmetrical at all drive heights and has a maximum operating angle that never exceeds 54 degrees on outboard joints, usually 47 to 54 is what is put in most cars on the outboard joints and 22-31 degrees on inboard joints. The higher the degree range of operating angle the more cyclic vibration. This is why in low suspension setting the vibration can be eliminated. I am going to assume the problem is entirely the inboard joints that are being pushed beyond 31 degrees of movement and are prematurely failing. The fix to replace a clevis mount that allows sideways movement isn't the right answer, the axel has to be able to extend and compress or it will wear out even faster. If I was to bet what is causing the problem, it is the motor itself moving and putting stress on the right inner joint, until you solve for that, I don't see a resolution.
Sounds like that solution would be cost prohibitive for Telsa. Simply put, they would have to find a way to mount the front DU lower. Not happening any time this decade.
@WilliamG
emailforbrett
Member
email sentView attachment 768324
Good news! DriveTesla is giving our comcern the light of day! Be sure to reply via the “tips” link at the end of the article. I suspect they will publish another after they get flooded with tips!
Refresh Model S owners growing increasingly frustrated with vibrations that Tesla has not been able to fix
According to dozens of refresh Model S owners (both Long Range and Plaid) on the TMC forums and many more on Reddit and Facebook, the electric sedan suffers from a pronounced vibration in the accelerator […]
@driveteslaca
@emailforbrett Great! The more that send in a concern, the more likely more articles will come - and the more likely Tesla will be shamed into doing something to fix it.
yerEVan
Active Member
Yeah, it’s starting to wear me down a bit. Constant vibration. I was at the SC getting my repeater replaced (tesla broke 2 repeaters trying to replace my original). I asked the manager about the vibration issue, he had no idea what i was talking about, even though i had a service visit mentioning that problem along with the airbag replacement one.
he didn’t have time to drive with me to experience it himself.
he didn’t have time to drive with me to experience it himself.
yerEVan
Active Member
no. just reported it via the tesla app. i’m taking it in to get a 3rd attempt at fixing camera, soon so i will report it for that visit.
yerEVan
Active Member
@yerEVan
Refresh Model S owners growing increasingly frustrated with vibrations that Tesla has not been able to fix
According to dozens of refresh Model S owners (both Long Range and Plaid) on the TMC forums and many more on Reddit and Facebook, the electric sedan suffers from a pronounced vibration in the accelerator […]
driveteslacanada.ca
Also, see post 227
And, the article even points, via link, to this TMC thread! Get the word out!
No need to measure, this is what CV joints operate at. I am not sure why, but the axels on the cars are asymmetrical in length (a guess I would say its how the motor is positioned and the differential it uses being on the left side) also, there is some type of bracket on the right side of the axel (to me its an actual clevis mount) but not what Tesla refers to as a clevis mount, I can see how this could be a problem. My 2 cents but until this whole setup is re-engineered it will be a problem. I vote for symmetry of axels and freedom to move in and out and I see great results coming from that, if I had to place my bet, I would say the right side is always the problem, its just a poor design from what I see.
Similar threads
- Question
