RC Calc application contains a set of useful calculators that help in setting up and maintaining rc cars. To switch between calculators, select the desired one from the list on the top panel of the main screen. Description of calculators is given below. FDR Calc Plus FDR (Final Drive Ratio - rc car parameter which tells how much faster the motor shaft is spinning than the driving wheels) and CS (Counter Steer - rc car parameter which tells how much faster the rear wheels are spinning than the front wheels) calculator. The application contains a large list of popular chassis and their modifications with the ability to select the desired model for the calculation, as well as saving and editing your setup. Additionally, there is an ability to view instructions, tuning sheets and other information for some models from the list. FDR Calc FDR (Final Drive Ratio - rc car parameter which tells how much faster the motor shaft is spinning than the driving wheels) calculator by given spur, pinion sizes and the internal ratio value. Belt Calc Belt length calculator by given pulley sizes and distance between them. The application provides a convenient interface for calculating the exact sizes of transmission elements of belt chassis. Weight Calc Car weight distribution calculator by given mass values at each wheel. The application helps to determine the exact masses of all sides of the car, as well as their percentages. More detailed description and short instruction can be found in the section "About".