Quote:
Originally Posted by flipside
Hey, if you have only one scale, do the following:
Make sure you can put the rear wheels onto the scales (my scale wasn't wide enough, so I had to put a bigger plate on top of it). Reset the scale to 0 with that new plate.
Then make something the same height as your scale+plate where you can put the front wheels on.
Weigh the complete car, for example it's 1620gr.
Then put the car with the rear wheels on the scales, front wheels on the other 'thing' you made.
Read the scales, for example 1050gr.
This means 1050gr out of your 1620 total sits on the rear wheels. Or 1050/1620=0,648148 or in % multiply by 100 so 64,8% of the weight is on the rear wheels.
Simple as that!
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You're only working out half of the figures!
If the car weighs 1620g... work out the rear weight as you've already done, then turn the car around so that you have the front wheels on the scales and weigh that. I guarantee the front and rear weight added together will total more than your total car weight of 1620g.
The reason for this is that you will have some of the middle weight (middle of the car, batteries & radio gear etc) applying weight to both the front and the rear wheels in a static position on a flat surface.
The way to calculate the ratio of weight on the front and the back wheels you need to calculate the total weight from adding the front weight and the back weight together (we know this will add up to more than the cars weight of 1620g) and use that figure to calculate the percentage of weight on the front wheels and on the back wheels!
Hope that makes sense?!
All is kinda redundant really as the weight is only really an issue with car handling when looking at weight transfer - either on or off power or in the corners. This will all be determined by 'where' the weight is, shock oil, springs, ride height front and back, wheel base etc.
If any of this helps, I'm glad to be of service!
Jon!