Right guys,

My final assignment...ever!!! Having to do a vehicle case study, bit of a stupid assignment as we're meant to find out all sorts of data from books and the internet but no-one seems to give this kind of info so I decided to go for the 300 series!

I've managed to get most of the data I need but can't find roll centre or roll stiffness, also be useful if anyone knows about the manufacturing....

No. / year
No. of years built
Hand/machine built

If anyone knows anything then let me know

cheers

Ali

Ali wrote: My final assignment...ever!!!

Feels good, doesn't it I've just finished my last proper assignment, just a couple of little bits and two exams to go...

Ali wrote:...also be useful if anyone knows about the manufacturing....

No. / year
No. of years built
Hand/machine built

Is this any help?
http://www.volvoclub.org.uk/history/300 ... search.php

Tom

Look here:
http://www.stockcarproducts.com/pstech3.htm

I'm using open wlan from building across a street, disconnects a lot, but can use a bit at least.

I have never seen roll center dokumented so I believe you need to take measurements and calculate it. If I have time in next month I try to do that too.

BTW, has anyone measured how many G's 360 pulls at skidpad yet?

I can't explain in english. The rollcentre is measured by the way the suspension(arms) is engineerd. Try to find books about engineering the arms etc. (Vehicle dynamics?)

Rollcentre is very very important.

My mate bloody sold his G-tech so can't measure it now I don't think they want that much detail in the assignment but the lecturer is totally useless and isn't contactable now until after my assignment is due! Spoke to other people on the course and they can't find any info about their cars so think i'll just leave it without

Frits is right, you'd need to calculate rollcentre from the angles of the suspension arms.. I used to know a BMW site that had an easy explanation of the subject, but I cant seem to find it anymore.
Would be usefull for you to know, since your car is probably lowered far enough to introduce some serious roll-centre issues.
I believe what happens is that your roll centre is moved further away from the cars centre of gravity.. the bigger the distance between those 2, the bigger the roll couple becomes (causing more roll, which you then combat with stiffer springs, which are bad for the ride qualities etc).

Most toyota AE86 guys fit roll centre adjusters to their cars when lowering them more than a couple of cm's (I have a pair myself).

jtbo wrote:BTW, has anyone measured how many G's 360 pulls at skidpad yet?

I've made the G meter, just need a skidpan Might need to tweak the code a bit for it, but I'll get shot if I do that before a certain knock DSP...

IvanAE86 wrote:Frits is right, you'd need to calculate rollcentre from the angles of the suspension arms.. I used to know a BMW site that had an easy explanation of the subject, but I cant seem to find it anymore.
Would be usefull for you to know, since your car is probably lowered far enough to introduce some serious roll-centre issues.
I believe what happens is that your roll centre is moved further away from the cars centre of gravity.. the bigger the distance between those 2, the bigger the roll couple becomes (causing more roll, which you then combat with stiffer springs, which are bad for the ride qualities etc).

Most toyota AE86 guys fit roll centre adjusters to their cars when lowering them more than a couple of cm's (I have a pair myself).

Yes, thanks for the further explanation. If you change the position of the suspension arms, you can make the roll situation better. Then you also need to change the position of the steerhouse, to avoid bumpsteer.

I want to make a 3D model in an engineering program, but haven't enough time for it right now.. Also want to finish the engine of my 343 first. Then I'll start body/suspension engineering for drifting..

hi there

I've got 300 series production stats if you want. I can copy them here over the weekend for you (currently moving house so I'll borrow my dads pc!! )

Afraid the assignment is due in by 2pm tomorrow If you have any information about the number made per year or the production techniques that'd be great but don't worry too much, its not really an important part of the assignment, thanks anyway though

cheers
Ali