This video shows you how to easily check the balance of your slot car, left to right and also shows you the where the centre of gravity is.
It then shows you how to calculate your Balance Ratio.
If you wish to purchase one of these devices please contact me at rodforder@gmail.com
If you live in Australia you can purchase from Mr. Slotcar in Melbourne or Armchair Racer in Sydney.
I also have a distributor in the USA and the UK.