s13 oem suspension, knuckles, etc in cad, solidworks, etc??

[ricardomendes]

i there i would like to know if anyone have any thing of OEM suspension geometry or knuckes on cad, solidworks, or any other software?
i will do a project for university, and i need the oem suff like that and if any one have this it will help alot.

the Project will consist in analyse the oem suspension geometry and see what happen when the car is lowered, roll center etc...



regards

[Plus4E]

Hey - I stumbled across this when looking for something else. Apologies for the thread revival!

I wrote a simple excel spreadsheet to look at this very thing, although it was a long time ago! I can email the spreadsheet(s) to you, if they're still of use.

[skyshack]

Is that an Excel version of the Alan Staniforth "string computer"?

[Plus4E]

Pretty much Took me ages!

[ricardomendes]

hi there i use the lotus software shark to make the study of the geometry of the my s13 to design an adapter to correct the roll center and to get all the geometry to work correct again.






thanks for your videos too

[green_rs13]

what were your results?

[ricardomendes]

first i get the positions of the points with a chassis analyser that we have also in the MOT to see if the chassis have any damage. then i put the coordinates on the lotus software and get this results in my car

CAMBER ANGLE (deg):-1.77
TOE ANGLE (SAE) (+ve TOE IN) (deg):0.05
TOE ANGLE (PLANE OF WHEEL) (deg):0.05
CASTOR ANGLE (deg):3.78
CASTOR TRAIL (HUB TRAIL) (mm):12.80
CASTOR OFFSET (mm):8.07
KINGPIN ANGLE (deg):13.14
KINGPIN OFFSET (AT WHEEL) (mm):95.93
KINGPIN OFFSET (AT GROUND) (mm):19.94
MECHANICAL TRAIL (mm): 8.06
ROLL CENTRE HEIGHT (mm):-73.23

i found i have a problem with my caster too, and found that my car suffered an accident and the radiator low rail is 11mm pushed back and even with adjustable arms in the small position i can´t get near the oem values for caster and i need to modify the pick up point of the arm.

to correct the roll centre i need at least 40mm to correct at knuckle to bring it to the ground level.

regards

[piman2k]

The only folk I know that have CAD of the original parts are GKTech, but that's because they have access to a 3D Laser scanner. I doubt they'd send you their models.

[calicagesracing]

Just out of interest (and the possibility of going balls out on a time-attack project in the future) what would be the optimum suspension setup for grip?

Ie, is it worth the ballache of space framing the front end to fit double wishbone setup or is McPherson strut just as good?
(I see you've modeled d.w.s. above jn but stuck with McPherson on your project)
I've been doing a little bit of Internet research on this but it's mind boggling!!

Any recommended reading?

[ricardomendes]

Just out of interest (and the possibility of going balls out on a time-attack project in the future) what would be the optimum suspension setup for grip?

Ie, is it worth the ballache of space framing the front end to fit double wishbone setup or is McPherson strut just as good?
(I see you've modeled d.w.s. above jn but stuck with McPherson on your project)
I've been doing a little bit of Internet research on this but it's mind boggling!!

Any recommended reading?

i didn´t think in change the suspension type on my project. but if you want i have i few book´s that a can send to you just give me your email by PM.

[calicagesracing]

Pm'd mate, thanks

[shephurd]

Hey recardo, I sent you a pm. I am currently working on a similar project.