Front Suspension

[akeller]

Hello,
I'm designing a chassis for a slab side 289. It will resemble the Daytona Coupe design but will deviate from the original due to a fully independent suspension both front and rear. The car will weigh about 2,200 lbs.

Up front, I'd like to use a common, readily available spindle that will stand up to the abuse. The spindle would need to be compatable with a hub or rotor of about 12" (I want to use 15" FIA style wheels and the rotor/caliper must fit that wheel); the distance from the spindle/axle centerline to the lower ball joint should be around 3" or less; the distance to the upper ball joint should be around 5"; it should be front steer.

Is anyone using the Mustang II spindle? That looks like it might work.

Any help or ideas would be greatly appreciated.
Al Keller

[Alex Evonosky]

Al K
The MII spindles (uprights) are real close to what you are looking for. The measurements are from the center of the spindle: to the upper ball joint is about 5 1/2" and to the lower is about 3 1/2". I say about because mine are mounted and a little hard to get exact.
Not sure about all the other caliper and wheel measurements you are looking for.
There are a lot of smart guys on here and sure some of them will have more input.
If you placed a call to someone like Pole Position 888-303-8555 they can give you the exact measurements of the #9302 and 9303 MII spindles.

Thank you,

[Dominik]

good day,

now we split our topics in various sub-topics, but not those into more subs...;-)

that is why I write here:
while building your own front suspension you may want to think about camber curves and roll center for a moment.

new generation tires, generally, or low profiles may call for less camber change in roll to keep the tire better on the ground.

the original suspension could benefit from shorter upper front control arm (3/8" shorter?) and a longer chassis bracket.

I also heard that one could change the anti-dive angle from 8 deg to 6 deg.

In case you mount a lighter engine you may get a way with a lower roll center in the front...

and the steering rack?...
how come most production cars do not have the tie rod end in line with the upper and lower balljoint, which is recommended by my books?
or is that why street cars need to be different to racing cars when it comes to Ackermann steering?

dominik