Corner weights of a 1303

[Chris Percival]

I had my car weighed when I got my T4 engine tuned up a couple of years ago. Its a 1973 1303. With me sat in it it weighed 939kg, and the following at each wheel:

Front left 200kg
Front Right 213kg
Rear left 246kg
Rear right 279kg

[andy1303]

Excellent, thanks for that. Surprising isn't it really. That's not as much difference as you'd expect front to rear. Will we see your car on track this year?

[Chris Percival]

Yeah, it is. I have the battery in the front wheel well which helps. On average its a 44/56 split, front and rear, thats supercar territory..

Hopefully on the road, but probably not the track this year, maybe next..

Chris

[Steve C]

Hi Chris

Is your car adjustable in the corner weights? Having the corner weights correct can really make difference to a cars behaviour.

I want to have my corner weights correct in my next car, Im on the lookout for a cheap way to do this. I've thought about making a hydraulic apparatus that could lift each wheel, I could then read the hydraulic pressure needed to lift the car at each corner. It wouldn't give me kilograms per corner like you have, but I could compare oranges to oranges, but the kilograms per corner could be worked out if I knew total weight of the car.

Steve

[Chris Percival]

As I have adjustable struts, the wheel pressures could be modified by adjusting the strut height I expect.

What about using heavy duty scales, and just weigh one wheel at a time, adjusting them until they're even?

[Steve C]

Hi Chris

Proper race teams have pressure pads that they drive cars onto, these are out of the price rangfe of the average enthusiat. I imagine getting the car onto a scale would upset the suspension.

what I was thinking with my hydraulic apparatus was I would drive the car and place it on 4 pieces of thin but tough piece of plastic, i would then lift each wheel in turn until the plastic sheet could just be moved and make a note of the pressure reading at each corner. There is software available to calculate corner weight results.

To get your corner weights right you would need to adjust the rear torsion bars as well, that would be pain unless you had adjustable spring plates or unless you ran coil springs all round like andy1303 is doing.

Steve

[Steve C]

Hi

Just found some software to do corner weights, I used weights that Chris posted.

Steve