An E30 Project

blackskygtr · Post by **blackskygtr** » Thu Feb 05, 2009 10:28 pm

Sad i am i know but this made very interesting reading.
Grab a coffe and some brain food
Jay

http://en.wikipedia.org/wiki/Car_handli ... ity_height

RobCallow · Post by **RobCallow** » Fri Feb 06, 2009 8:01 am

It's not a genuine 40mm gain as the offset of the new wheels is alot less than the originals.

I would guess at a 15-25mm gain in track

duncan · Post by **duncan** » Fri Feb 06, 2009 8:21 am

blackskygtr wrote: would love to know the maths behind centre of gravity etc

Wt=(G*Cgh*W)/Tw
Wt=weight transfer.
G=sideway G load.
Cgh=centre of gravity height.
W= weight.
Tw=track width.

The goal is to reduce weigh transfer (and subsequently getting inside tyres working more) so .. this can be done by either increasing track width or decreasing Cgh or weight

I did find some really useful info on the actual theoretical grip increase but for the life of me I can't find it again now :lol:

BTW Rob - project coming on a treat - when is a cage going in ?

RobCallow · Post by **RobCallow** » Fri Feb 06, 2009 8:40 am

duncan wrote:BTW Rob - project coming on a treat - when is a cage going in ?

As soon as I can afford the cage it will be fitted.

The car is to become a track only car so I'm going to go for a weld in cage I have seen a Safety devices cage for

RobCallow · Post by **RobCallow** » Tue Feb 10, 2009 7:19 am

A few pics from Sunday at Snetterton

RobCallow · Post by **RobCallow** » Sat Feb 21, 2009 3:20 am

A bit more weight saving Headlights, foglights, Front and rear bumper inners removed, front and rear bumper shocks removed, horns, headlining, sunvisors and sunvisor panel all removed.

Got some plans to cut out some more weight by removing all the bracing etc. from the bonnet and refitting with bonnet pins (Have been told that it is only 1kg heavier than a fibre glass bonnet if you do this)

Pics to follow

RX7 · Post by **RX7** » Sat Feb 21, 2009 8:38 am

Nice progress there Rob and those shots are great of your car !!!!

Post by **Stuart** » Sat Feb 21, 2009 8:46 am

I think Rob has reached the tipping point now :lol:

From here on in, it will become a singular pursuit of enhanced cornering speed and grins.

Best of luck Mr Callow

RobCallow · Post by **RobCallow** » Mon Feb 23, 2009 4:43 pm

stuart wrote:I think Rob has reached the tipping point now :lol:

From here on in, it will become a singular pursuit of enhanced cornering speed and grins.

Best of luck Mr Callow

I think your right now looking at everything on the car and thinking do I need that or can I cut a bit off it etc.!!!

Mr Fletcher · Post by **Mr Fletcher** » Mon Feb 23, 2009 6:42 pm

good effort there rob :thumb: if you would like some spare panels ie bonnet , boot, doors to cut about first rather than yours i have some that will be going to the scrappy soon just let me know if they are any use to you

cheers

jason