Raising sv2 steering by 4mm

[arransmith27]

I'm in the process of building my SV2 and am looking to raise the steering by 4mm using the optional spacers.

What length screws will I need, and which ball studs do I need to get?

[Chris Elworthy]

Hi Arran

I ran my Sv2 at Bury for the first time last Sunday but ran it kit standard. Woody has given me advice on build tips inc raising the Ackermann and ball studs 4mm but said nothing about using longer studs and screws but saying that Roger built his car so he probably wouldn't know ha!

I haven't started modding my car yet so I'm not totally sure, hopefully somebody on here can enlighten us.


Chris

[losichris]

you dont need longer screw for raising ackerman 4mm , but you do need large or xlarge ball studs for adding bump steer

[mark christopher]

Originally Posted by losichris

you dont need longer screw for raising ackerman 4mm , but you do need large or xlarge ball studs for adding bump steer

how does raising the ball cup change ackerman then?

[N7ELA]

Originally Posted by mark christopher

how does raising the ball cup change ackerman then?

Ball cups...? No mention of ball cups mind. None.

You need to learn to stay off the drink and read things correctly before trying to pick holes in it.

[chrispattinson]

Originally Posted by mark christopher

how does raising the ball cup change ackerman then?

You need to raise the ball cup by changing the ball stud, the same amount you raise the Ackerman to avoid bump steer.

[mark christopher]

Originally Posted by N7ELA

Ball cups...? No mention of ball cups mind. None.

You need to learn to stay off the drink and read things correctly before trying to pick holes in it.

so if you raise the ball stud height, you dont raise the ball cup? me think you need to practice what you preach!!!

[mark christopher]

Originally Posted by chrispattinson

You need to raise the ball cup by changing the ball stud, the same amount you raise the Ackerman to avoid bump steer.

you have to move the inner or outer ball forward or rearward on the steering linking or hub to adjust ackerman, raising the inner or outer ball does not alter ackerman!!

[ian h]

Originally Posted by mark christopher

you have to move the inner or outer ball forward or rearward on the steering linking or hub to adjust ackerman, raising the inner or outer ball does not alter ackerman!!

The Ackerman is altered by raising the steering rack from the bellcranks. Raising the ball studs the same amount counters the bump steer from raising the steering rack.

[mark christopher]

Originally Posted by ian h

The Ackerman is altered by raising the steering rack from the bellcranks. Raising the ball studs the same amount counters the bump steer from raising the steering rack.

as i said, thats does not alter ackerman, ackerman is the rate the wheels turn to each other,
http://www.racecartuner.com/03/203.html (click steering rack)

ackerman
http://www.rctek.com/technical/handl...principle.html

[bigred5765]

it doesn't alter dump steer as you jack up the outer ball studs as well,
it also doesn't alter Ackerman,
what it does is makes the steering act as though it has some ex potential on it making it slower over the first part of the movement and faster at the end (full lock)

[Chris Elworthy]

I've heard the mod is to calm the front end down so what you say Carl says sounds about right.

Chris

[N7ELA]

Originally Posted by mark christopher

so if you raise the ball stud height, you dont raise the ball cup? me think you need to practice what you preach!!!

You definately do not raise the ball cups. You raise the centre track rod.

The ball cups stay the same height from said track rod.

If the car is on it's wheels then the correct terminology would be to say the ball cups were elivated but as your cars spend more time on their roofs then the ball cups will probably be lower.

[mark christopher]

Originally Posted by N7ELA

You definately do not raise the ball cups. You raise the centre track rod.

The ball cups stay the same height from said track rod.

If the car is on it's wheels then the correct terminology would be to say the ball cups were elivated but as your cars spend more time on their roofs then the ball cups will probably be lower.

what a shame your trying to make this a personal , im sure your sponsers would not want you to conduct your self that way! Assuming your sig line are your sponsors...



so you lift the steering rack by 4mm, which the ball studs attach to, and you add 4mm under the outer ball, which lifts the whole track arm 4mm higher that the lower arm, and you still say the ball cups do not move higher! you are a star!

elevated [ˈɛlɪˌveɪtɪd]
adj 1. raised to or being at a higher level

[DCM]

Right, i have an SV2 and done this adjustment, no it doesn't alter ackerman, no it doesn't affect bump steer either, yes you need longer ball studs, it raises the heght of the steering arm in relation to the wheel, yes it raises ball stud, yes it calms the steering down.
That clear things up?