Without*

I fully agree. A tube chassis car with stock suspension pickups?!? I would contact whoever built the chassis and get the blueprints. Which will include all the data you need.

 

I'm not saying that the car has everything stock suspension pickups,but certainly be close that

only I'm trying to figure out is why car is so understeering
(same like other racing Lancers which stock pickups have)

I do not know only one EVO racing without strong understeer (without WRC).

reasons? of course kinematic!!! not only kinematic of course

 

If you have a tubular frame car, then the data for an actual Evo is not useful to you. There is no such thing as "close enough" here. Even small changes in suspension pickup points can make massive changes in effective suspension geometry.

If you really want to try your hand at analyzing this suspension, you need to get the measurements for the actual tubular chassis and suspension components you're using. This actually should put you well ahead, because whoever built the chassis for you should have all of that CAD info readily available.

And again: What are you actually going to do with this data? Are you planning on changing suspension pickup points or doing other geometry changes? If not, it's not going to help you out a whole lot beyond actual experimentation and real-world measurements. Particularly if you don't understand why the data for a factory Evo isn't applicable to a tubular chassis car.

 

Thank You Construct!
Yes,I know this all

my friend have this car and I have dynamic simulation program
with stock data,before real data from real car measurement I can get better image about car behavior (all other data are simply available)
now I can play with virtual car model,
then, after get real data , my model be upgrade

makes sense now?

unfortunatelly get data from builder not possible

excuse my english please

 

Unfortunately, the only course of action here is to start measuring. Anything else is a waste of time if your goal is to understand and improve the tubular frame car you're working with.

Also, we demand pictures of this car for our enjoyment because it sounds like a fun car.

 

maybe,
although there exist many other understeering Lancers
not bad training

if someone want to make some measurements his car, then I am willing to help with

Thank You Construct

 

here video

 

You could always start with some front aero. Since you know, the car has a rear wing...


I feel like this is pointless.

 

is hillclimb car,
if You have some hillclimb racing experience, then You know that rear wing is really necessary high speed stability contribution

slow speed understeer is problem..........vice versa some level highspeed understeer is benefit on hillclimb

 

You have an aero imbalance, start there.


If you get the car to rotate at slower speeds, it is most definitely going to rotate at high speeds.

 

WERD...

I was about to leave it there, then I read the rest of this and just think...WTF?

1. Why in the world would you build a tube chassis evo with stock suspension arrangement, much less mounting locations?

2. Oh wait...I see a B-Pillar in the video....it's not a tube chassis.

3. I get the feeling to OP isn't actually involved in that car at all.