Pic of the race car at Summit Point

Nick M3 · 08-21-2006, 02:05 PM

There's quite a lot of body roll - I'm going to have to put the stiff spring set back in.

FT@SGP · 08-21-2006, 02:35 PM

Why is body roll bad? Running out of camber?

*clyde* · 08-21-2006, 02:37 PM

Quote:

Originally Posted by FT@SGP

Why is body roll bad? Running out of camber?

It's a BMW with a macstrut...what else could it be?

rumatt · 08-21-2006, 02:48 PM

Body roll? What body roll?

Nick M3 · 08-21-2006, 02:56 PM

Quote:

Originally Posted by FT@SGP

Why is body roll bad? Running out of camber?

Shitty transitional response. Camber is also an issue.

rumatt · 08-21-2006, 03:13 PM

Quote:

Originally Posted by Nick M3

I'm going to have to put the stiff spring set back in.

Why did you take them out?

Nick M3 · 08-21-2006, 03:15 PM

Quote:

Originally Posted by rumatt

Why did you take them out?

Seemed like a good idea at the time.

Sharp11 · 08-21-2006, 03:41 PM

Quote:

Originally Posted by rumatt

Body roll? What body roll?

Or more accurately, roll stiffness.

And just think, all that positive right side camber with double wishbones

Ed

ff · 08-21-2006, 03:53 PM

Quote:

Originally Posted by Sharp11

And just think, all that positive right side camber with double wishbones

Ed

Wouldn't it still be negative until the moment where the car loses traction and goes airborne? With all the weight of the car on the right wheels, I'd think there's be even more negative camber.

Nick M3 · 08-21-2006, 04:19 PM

Quote:

Originally Posted by ff

Wouldn't it still be negative until the moment where the car loses traction and goes airborne? With all the weight of the car on the right wheels, I'd think there's be even more negative camber.

Not really. Negative camber means that the top of the tire is angled towards the car. Strictly speaking, it's always negative unless you hit something or have truly unbeleivably bad geometry. Whenever we say "goes positive" we're referring to the tire's relationship with the road. In this case, unmitigated body roll has that car cornering on the sidewalls. Since it's FWD, it's much harder to cure without creating lots of understeer.

And Ed, don't give me any of that worthless crap about how that particular DW suspension is set up. DWs have far greater potential than struts, but only if they're set up to take advantage of it.

08-21-2006, 02:05 PM	#1
Nick M3 Relic Join Date: Oct 2003 Location: Bethesda, MD Posts: 12,456	Pic of the race car at Summit Point There's quite a lot of body roll - I'm going to have to put the stiff spring set back in. __________________ 2011 M3 2006 Sierra 2500HD 4WD LBZ/Allison 2004 X5 3.0i 6MT 1995 M3 S50B32 1990 325is 1989 M3 S54B32 Hers: 1989 325iX 1996 911 Turbo

08-21-2006, 02:35 PM	#2
FT@SGP Jaded Join Date: Nov 2003 Carmudgeonly Ride: 987-120, 645 Location: MD, USA Posts: 291	Why is body roll bad? Running out of camber? __________________ FT

08-21-2006, 02:48 PM	#4
rumatt Mugwump Join Date: Oct 2003 Carmudgeonly Ride: E46 330i, Chevy Colorado, Tesla Model 3 Location: NY Posts: 17,475	Body roll? What body roll? Attached Thumbnails