Corner Weight Scales

Hi Guys,

I am new to the forum and I’m still finding my way around. I need assistance in designing a set of corner weight scales for setting up our racing cars. The commercially available units are very expensive. I have put together a rough schematic, with which i would appreciate assistance (to see that I got the right things together). I have been through most of the tutorials in Sparkfun and think i have the basics correct.

The corner weight scales are positioned under each tyre and measure the weight at each corner of the car. This is then displayed on a lap top or cell phone. The necessary adjustments are then made. There are no wires and everything is connected via blue tooth and Wi Fi. Maybe (lust hoping) someone has done this already. Much appreciated.

Corner Weight Scales 400 Kg Electronic Components (1).pdf (10 KB)

It’s a big project. Mounting the load cells will be a challenge. The wheel weighers that can be placed on the floor before driving the car on need to be very low in profile which makes load cell selection very difficult. Often, multiple small cells are used.

Other kinds of vehicle balancing systems require jacking from under or lifting from above and moving the scales underneath before lowering. These are commonly used for aircraft. The load cell selection is easier when the height is not an important consideration and more common tank / hopper / vessel load cells and mounts can be used. It’s not what I’d call cheap, [this set is $2000 and you’d still need all of the instrumentation.

If you have access to a lift, you might consider hanging the car [from four tension load cells. I’d expect it would be a bit of a struggle keeping everything level, though.](https://www.ricelake.com/en-us/products/product-details/itcm-isolated-tension-cell-module#/information#parts)](https://www.ricelake.com/en-us/products/product-details/rl1600-series-cast-iron-weigh-module#/information#parts)