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Rob Doe · 05-13-2023, 02:25 PM

ampico,

I have felt similar bounce like sensations in our coupe. It seems to come from the rear of the car rather than the front. I think post #23, by rotorwrench is the most likely source of our issues. His answer, if I understand correctly, is two part??? A hub and drum may not have been mated correctly, or the drum was incorrectly machined off center at some point when new brake linings were installed. The other is that the race on the end of the axle housing can become flattened on the bottom due to the load always bearing there. I have no clue what sensations that would cause. Others here might know.

I don't pretend to know the math equations involved, but I suspect that an out of balance situation would probably not diminish with increasing speeds of the rear wheel rotation. They probably grow exponentially???

05-13-2023, 02:25 PM	#27
Rob Doe Senior Member Join Date: Apr 2021 Location: Central Illinois Posts: 499	Re: The Bounce ampico, I have felt similar bounce like sensations in our coupe. It seems to come from the rear of the car rather than the front. I think post #23, by rotorwrench is the most likely source of our issues. His answer, if I understand correctly, is two part??? A hub and drum may not have been mated correctly, or the drum was incorrectly machined off center at some point when new brake linings were installed. The other is that the race on the end of the axle housing can become flattened on the bottom due to the load always bearing there. I have no clue what sensations that would cause. Others here might know. I don't pretend to know the math equations involved, but I suspect that an out of balance situation would probably not diminish with increasing speeds of the rear wheel rotation. They probably grow exponentially??? __________________ "It ain't what you know for certain that gets ya in trouble. It's what ya know for certain that just ain't so!" Last edited by Rob Doe; 06-15-2023 at 08:09 PM.