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Corner weights
whitestu - 6/12/07 at 04:44 PM

Anyone have a rough idea how much the front corners of a CEC indy weigh?

I'm looking at some scales that will go up to 180Kg and wondering if one under each wheel would work.


I'm fairly sure it would be enough at the back, but not sure about the front.

Cheers

Stu

blakep82 - 6/12/07 at 04:58 PM

i've heard of it to be done with bathroom scales...

higgsti - 6/12/07 at 04:58 PM

depens what engine but v8 westy with all carpet etc is around 750kgs

whitestu - 6/12/07 at 05:00 PM

Its a 1.8 Zetec.

higgsti - 6/12/07 at 05:27 PM

id say somewhere around 65okgs then for the car then theres your weight.engine weighs around 130kgs battery 5kgs ,wheels and tyres 35kgs if there 16s ,mi6s with discs around 10kg theres lots more besides but thats front end.if you struggle with the weight which i dont think you will you could always put the rear on blocks the same thcickness as scales and use 2 scales on each front wheel with plank across

se7ensport - 6/12/07 at 06:46 PM

buy 8 bathroom scales from ASDA @ £3 each, use a pair for each wheel with a bit of wood over the top

whitestu - 6/12/07 at 07:27 PM

quote:

buy 8 bathroom scales from ASDA @ £3 each, use a pair for each wheel with a bit of wood over the top


How well does it work reading off two scales for each wheel?

Thanks

Stu

triafgg - 7/12/07 at 08:45 AM

What are you trying to measure, corner weighting or axle weights?

I'm not an expert but I understand corner weighting as the weight pushing down on the unsprung suspension items which is measured in a completely different way and pertinent to equalling suspension activity during cornering. By putting scales under the wheels you will only be measuring axle weights AFAIK. Also cornerweighting is measured diagonally across the car and not per axle.

Just my thoughts, many on here far more qualified to explain, or correct me.

minitici - 9/12/07 at 05:17 PM

quote:
Originally posted by whitestu
I'm looking at some scales that will go up to 180Kg and wondering if one under each wheel would work.



britishtrident - 9/12/07 at 06:42 PM

quote:
Originally posted by triafgg
What are you trying to measure, corner weighting or axle weights?

I'm not an expert but I understand corner weighting as the weight pushing down on the unsprung suspension items which is measured in a completely different way and pertinent to equalling suspension activity during cornering. By putting scales under the wheels you will only be measuring axle weights AFAIK. Also cornerweighting is measured diagonally across the car and not per axle.

Just my thoughts, many on here far more qualified to explain, or correct me.



No all that is required to measure the reaction force between each tire and the ground. The only proviso is it really has to be done on all 4 wheels at the same time with the car on a truly level surface.

Trouble with doing it with spring balance scales is if the car is stiffly sprung the deflection of the scales can be enough to upset the readings. Electronic strain gauge type scales are best becais there is amlmost zero movement of the spring platform.

britishtrident - 9/12/07 at 06:43 PM

quote:
Originally posted by minitici




That is actually quite neat.