praztek

Current Mods: Rear roush springs, lowered 1"

Issue: Feeling that the car is floating when hitting a small bump in the road or switching lanes at high speeds...? This was also felt prior to the roush springs.

I'm not taking the car to races/etc, but do enjoy red lining 1,2,3 gears once in a while! Gaining more power to the rear wheels by limiting the rear end dipping upon hard excelleration would also be a preference.

praztek

Nobody? Hard to believe I'm the only one. I checked the lca's as someone suggested on another forum, and there parallel with the ground.

[IMG]local://upfiles/24825/2ED73849B6744CB39E024277A8837D31.jpg[/IMG]

cekim

All I can do it commiserate...

https://mustangforums.com/fb.asp?m=1584690

Glad to hear any suggestions. Sad to hear Rousch did not help at all.

The intuitive cause is shocks and the non-linear panhard movement...

Shocks are easy enough it seems (Tocicko D), but removing the panhard from the equation is going to be a bit more invasive.

praztek

Was beginning to think I was the only one, hopefully we have a few good suggestions.



Thanks

cekim

This guy has a nice explanation of "the problem" - but he describes it as doing "an excellent job of locating the rear axle"

As I said in my first post - I am just assuming that this is a reasonable source of what we are seeing from my admittedly rusty dynamics math (I am an EE - so my day-to-day work with physics is largely on the probabilistic end...)

http://www.miracerros.com/mustang/t_suspension.htm

Cobrakev

What type of wheel/tire combo are you running? Check tire pressures. This is a big problem when stepping up to wider tire sizes. I really noticed it when i first steped up to 17" wheel's on my 93. The wider tire grips more of the imperfections in the road and if your roads are like mine, it's a hand full..

Kev

cekim

235/50/18 BFG - stock rubber on 18" ford polished rims (i.e. the option - not aftermarket)

I had not checked tire pressure - certainly should do that anyway.

The sensation I am describing, I can only speak for myself, feels precisely like what the panhard does mechanically.

The rearend rebounds from (particularly) a double tire impact and instead of going straight up and down, it goes out to the side as well and I felt myself pulling the front wheels ever-so-slightly over to correct and keep it straight... At that point now the car is moving in directions that the shocks simply are in no position (WRT to leverage) to do anything about and it oscilates a bit...

keep in mind, I am not talking about the car careening out of control, but in contrast to the solid feel on good asphalt it caught me off guard and if it can be corrected, should...