stephens, dr. chill
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stephens, dr. chill
How much camber adjustment is used to dimish understeer?And does it make any differnce in the feel of the steering wheel.? The heaviness in the wheel I think is a function of the variable ratio or speed related power steering and I wondered if any changes to the camber or castor would change that heaviness.?
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From: Melbourne, Australia
E55, F550, S600 Ducati 999
Originally Posted by tendons
How much camber adjustment is used to dimish understeer?And does it make any differnce in the feel of the steering wheel.? The heaviness in the wheel I think is a function of the variable ratio or speed related power steering and I wondered if any changes to the camber or castor would change that heaviness.?
You can remove the toe in at the front to get the car turning faster, but the issue seems to be two fold;
1. Castor is running around 10 degrees, needs to be about 6-7. The offset bolts only give a change of 40 seconds, so a new arm would need to be made to fix it.
2. The steering rack is plain wrong. I am currently investigating whether there is a linear ratio rack from a 320 or some other model.
Good luck and please share if you come up with anything.
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steering heaviness
amg and mercedes must have been aware of the heaviness. I wondered if they increassed the effort to make one more aware of the understeering problem, so that you'd be forced to slow up or have to use more force to pull through a turn. It's really annoying.
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From: Boca Raton, FL
2003 E55,2005 Ferrari F430 Spider, 2005 Corvette 427 TT, 2005 Range Rover
MBZ likely added the caster to help remedy the wandering that plagued the W210. Reducing the caster will reduce the steering effort. Is this what you are trying to accomplish? If you are looking to make the transitional response quicker, I bet the best place to start on this car is the sway bars.
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steering
I thought that there were no sway bars on the 211; the airmatic adjustable replaced them, I think.
In relation to steering effort, today was the first day since I've had the car that I drove it down a spiral ramp in a parking garage at maybe 20 mph and steering effort was wonderfully light. Somehow the heaviness has to be speed related and maybe software for the power steering pump/valves/? must be involved. There has to be more increased angling in that (constant circling)manuver than a ten-twenty degree turn at 80 mph, when the effort is definetly increased.
And actually, I've had both the 93 e500 and the 01 e55 and I remember that ramp as requiring definitely more effort to hold at that same speed.
On the positive side the car is more fun doing u-turns with a definte increase in the cars' angle at the end of the lock, sort of like the bmw active steering.
In relation to steering effort, today was the first day since I've had the car that I drove it down a spiral ramp in a parking garage at maybe 20 mph and steering effort was wonderfully light. Somehow the heaviness has to be speed related and maybe software for the power steering pump/valves/? must be involved. There has to be more increased angling in that (constant circling)manuver than a ten-twenty degree turn at 80 mph, when the effort is definetly increased.
And actually, I've had both the 93 e500 and the 01 e55 and I remember that ramp as requiring definitely more effort to hold at that same speed.
On the positive side the car is more fun doing u-turns with a definte increase in the cars' angle at the end of the lock, sort of like the bmw active steering.
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2003 E55,2005 Ferrari F430 Spider, 2005 Corvette 427 TT, 2005 Range Rover
Originally Posted by tendons
I thought that there were no sway bars on the 211; the airmatic adjustable replaced them, I think.
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2004 E500 / 2001 C240
The steering is speed related. So when going very fast it is harder to turn and when parking it is really easy.. It is a great feature.
I have an E500 and everything seems great with the steering although due to the extra weight in the front end of your E55's cause the understeer as it may still be set up for steering on an E500. Maybe there is a way to adjust this speed related turning on the computer?
I have an E500 and everything seems great with the steering although due to the extra weight in the front end of your E55's cause the understeer as it may still be set up for steering on an E500. Maybe there is a way to adjust this speed related turning on the computer?
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understeer
the web site" Yokohama tire recommendations" has a really nice set of guidlines by oliver sanchez outlining the various changes to be made to correct under or oversteer. I wondered why many people are putting larger wheels on the rear if
a decrease section width and increased aspect ratio in the rear are indicated to decrease understeer. There are alot of other changes and these are for competition and perhaps not related to real world concerns.
and above all, will esp not negate most changes, since it's never really off?
a decrease section width and increased aspect ratio in the rear are indicated to decrease understeer. There are alot of other changes and these are for competition and perhaps not related to real world concerns.
and above all, will esp not negate most changes, since it's never really off?
Last edited by tendons; Jul 26, 2004 at 11:34 PM. Reason: clarity -maybe
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More rear contact patch = more ultimate cornering grip. Many manufacturers have gone to staggered set-up on performance cars for 1)looks 2)understeer is safer than oversteer in the hands of the inexperienced.
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I have been feverishly working on the completion of my 944 turbo track/race car. It's now finished at running at 340 rwhp at 18# boost. The car weighs only 2600 lbs and out accels a Z06, and can really walk away from an S54 motored E46M3/E37Mcoupe. I finally got a roll-back style trailer and have been turning in as many lap days as possible at TWS.
