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Old 05-21-2014, 06:44 PM   #6383
n2o_matt
 
Join Date: Aug 2002
Location: tn
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Quote:
Originally Posted by N8 of S-Empire View Post

that distance is called the "included angle"...

max out your camber plate outward and run camber in the included angle on the lower coilover perch. if you have adjustable lower arms just make them as long as possible.
Maybe I'm reading it wrong, but it sounds like you're calling the angle between the knuckle and strut the included angle - its not. The included angle is simply the SAI inclination + camber. However, leaving the top hat where it is changes the camber and included angle but not the SAI, so I guess the concept is the same, just found it a bit confusing the way you said it.


Quote:
Originally Posted by N8 of S-Empire View Post
anyways this gets your SAI at a much more reasonable setting which reduces jacking as you turn the wheel. and now you don't have to run 2" of spacers to get your scrub right
What is a reasonable setting? Not trying to be smart, I'm new to the S-chasis and don't know where it should be. Which brings me to:

Quote:
Originally Posted by N8 of S-Empire View Post
In competition drifting we need our transitions to be as snappy as possible. some drivers like to throw the car around requiring less caster. some like the car to drive its self requiring more caster... if you add SAI into the mix then you get into a whole new world of combos.
Can you elaborate on this a bit? SAI typically adds positive camber to the outside wheel (or trailing wheel while drifting), so i'm thinking you can use this to keep your trailing wheel camber in check, or maybe even add some negative camber to the leading wheel? But then this would mean higher SAI, which you were recommending to reduce. Does the jacking effect from SAI (due to the resulting scrub) cause more/less self steering?

Quote:
Originally Posted by N8 of S-Empire View Post
zero ackerman causes interesting problems with transition speed and steering feel but that can be fixed somewhat with scrub but the real fix is what wisefab did with adding caster trail. zero Ackerman is desirable for high speed courses. slow speed stuff or really tight stuff likes ackerman. So again there is no perfect all the time setting. for the most part a reduction in ackerman is good for most people.
This might be asking too much, but can you explain why ackerman has that effect and how scrub can be used to fix it? Also, what is caster trail?

Thanks! sorry for all the questions, pretty awesome to have a drift team's crew chief on here helping people out!
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