Corner weighting

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tenkfeet
Posts: 2338
Joined: Sun Jul 31, 2005 10:02 pm
Location: Glasgow

Corner weighting

Post by tenkfeet » Thu Jul 03, 2008 5:24 pm

As advised by a few people on here ( thanks Robin and Mac ) I have been having a first attempt at corner weighting my car today . Ride height was set and initial weights were
nsf 161
osf 182
nsr 260
osr 260

So I tried to adjust it out and despite some large adjustments Lowering Lh rear initially and raising rh rear it appears to change very little now reads
nsf 166
osf175
nsr256
osr 265
with a large difference in rear ride height , Approx 4mm.
I was trying to set it up for me alone with the fronts balanced. I have set the rebound on the shocks at zero to shaken the car lots.

I appear to have come to the conclusion , I will not be able to get the front balanced without adding or removing weight from somewhere . Half a tank of petrol and 65kg of ballast in drivers seat.

Any advice or am I doing something stupid?

SORTED IGNORE
Last edited by tenkfeet on Sun Jul 06, 2008 3:33 pm, edited 1 time in total.
No lotus
Exige Sport 350 (Sold)
Elise Cup 250 (Air con and radio tubby spec) (Sold)
Evora S (sold)

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Bob vanM
Posts: 382
Joined: Tue Jun 06, 2006 6:48 pm
Location: Venray NL
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Re: Corner weighting

Post by Bob vanM » Sat Jul 05, 2008 11:41 am

sorted how ?
disconnect the ront anti roll bar and set all dampers to soft to make sure that they are free to move.

note that if you change 1 side, you will see changes in all 4 corners.
it will take some time to get it right.

tenkfeet
Posts: 2338
Joined: Sun Jul 31, 2005 10:02 pm
Location: Glasgow

Re: Corner weighting

Post by tenkfeet » Sat Jul 05, 2008 12:53 pm

Bob vanM wrote:sorted how ?
disconnect the ront anti roll bar and set all dampers to soft to make sure that they are free to move.

note that if you change 1 side, you will see changes in all 4 corners.
it will take some time to get it right.
Thanks Bob . I had not disconnected the front ARB :oops: I will not get back to it for a couple of weeks .
No lotus
Exige Sport 350 (Sold)
Elise Cup 250 (Air con and radio tubby spec) (Sold)
Evora S (sold)

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Bob vanM
Posts: 382
Joined: Tue Jun 06, 2006 6:48 pm
Location: Venray NL
Contact:

Re: Corner weighting

Post by Bob vanM » Sat Jul 05, 2008 5:18 pm

if the hight is ok (L and R equal), then there will be no force on the AR bar, and you can leave it in place (practical solution, not in theory)
I leave it on nowadays when I do my cornerweighing.
another thing I have found out is to roll the car after adjusting to settle everything again.

I take it that your floor - or at least the scales- are level ?

tenkfeet
Posts: 2338
Joined: Sun Jul 31, 2005 10:02 pm
Location: Glasgow

Re: Corner weighting

Post by tenkfeet » Sat Jul 05, 2008 7:51 pm

Yea the floor is level but not perfect . Next time I do it I will reverse the car in and see what I get . :) Ride height on the front is good to 0.5mm.
No lotus
Exige Sport 350 (Sold)
Elise Cup 250 (Air con and radio tubby spec) (Sold)
Evora S (sold)

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