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Author Topic:   Front suspention ?
dirtracer7
Member
posted November 02, 2003 08:24 PM
What would be the best way to do the front arms .If I aliagn the lower arms and set the caster by moving the upper arm. Or aliagn the upper arms and move the lower arms to set the caster. I can move both upper and lower arms I was told to set the top , ball joint to ball joint set the camber with the top arm then do the caster with the lower arm


dirtracer7
Member
posted November 05, 2003 06:18 PM
Anybody got any ideas about this?????????????


zeroracing
Member
posted November 05, 2003 07:25 PM
I always set the ride height to the lower control arms,and adjust the uppers for camber/caster from there,the lower angle is more important if everything else is right.IMHO


snowman
Member
posted November 05, 2003 07:48 PM
This is a tough,tough question, even when you know all the varibles,deciding which compromise to make is difficult......even for professional engineers and designers...thats why there are so many different designs.....lol

Every change that you are contemplating has an effect on everything else.......Gains made in one area can easily be cancelled by losses in others......

For example, If you can move the lowers outward, you could increase your front track width.....which most people would like to do....... But assuming you draglink is the correct length now, You would need a longer one, move the steering box and idler.......etc.........You helped the track width but now can't drive the car because the steering is a mess......

Changing any of your suspension points will affect everything else......caster/camber gain, roll center, bumpsteer, dive, everything.......Which means there is oppertunity to help...or hurt alot.

The simple answer to your question as asked is, Usually, the lowers are in the stock location and you move the uppers. Usually, the rules won't allow you to move the lowers......If that answers you question, fine, if not, perhaps you could share some more info....Like what kind of car, what class?

Good Luck,
Snowman



snowman
Member
posted November 05, 2003 08:38 PM
Dirtracer7, When I made the above post, there were no other replies........Meaning, I really need to work on my typing......LOL

I just looked at your profile and see that you race a Ford.........Now your question makes sense to me......LOL Ford strut rod front.......

I'm no Ford guy, but if I were to run one, I'd square the lower ball joints to the frame........(should help prevent any binding)......and adjust the caster with the uppers.

Good Luck,
Snowman


dirtracer7
Member
posted November 06, 2003 07:42 AM
Sounds like I been doing it the right way.I can't move the lowers out because I am already at our tread width limit.You hear alot of the you should do this BS and just needed some unbiased opion.So I guess I will set it up the way I have been and thanks for the replies


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