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Old 06-02-2007, 08:40 AM   #24 (permalink)
lethal_vr4
NG '03 6th Floor Crew
 
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Drives: 92 VR4/ 01 Lightning
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Default Re: The lethal_vr4 manual steering rack: Street test and review

Quote:
Originally Posted by Struggly
Specifically, it is not the effort required to turn the wheel that I find to be higher than I expected, but the effort required to maintain that wheel angle.

I have Tein Flex with SCE’s camber caster plates. When I originally installed the plates a few years ago, the front wheels would return to center more forcefully (this is a product of increased caster).

Clint,

How much caster are you running? Maximum? How much camber? I was thinking about your problem the other day and dusting off some of my racing text books.

The synopsis:

The more positive castor, the more the steering will self-center (which generally is a desirable effect). However, the more positive castor, the more effort it takes to turn the steering against this castor. What we want to adjust castor/camber for is a compromise between easy self-centering and heavy steering (and of course traction while cornering).

Based of your impressions, I'm going to surmise that you might have too much castor and should try pulling it back some. I know when I first put on my SCE caster/camber plates (on my JIC FLT-A2's) I went max caster.

Also note that castor also affects the camber when the steering is turned. The more positive castor, the more negative camber on the outside tire during cornering. So you could try less caster, more "static" camber and still have equal "dynamic" camber while cornering. Just something to think about/tinker with.
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