Chassis is a very important part of the vehicle, where the whole body of the vehicle is built. All vehicle external loads include their own weight supported by the chassis. Chassis design and analysis play an important role in making a vehicle. To find out the phenomenon of Formula Student Car, Autodesk Inventor simulation was made with variations in length of roll-hoop play and static loading of 9, 6 and 5 kN. The chassis material is carbon steel which has a value of mechanical properties that meet regulatory standards. The results obtained in this study are the relationship between main roll hoop length to normal stress and deflection is the same, the greater the value of main roll hoop length, the greater the normal value of stress and deflection. The relationship between main roll hoop length and normal stress is the greater the value of the main roll hoop, the greater the normal stress value. While the relationship between main roll hoop and shear stress is the greater the value of the main roll hoop length, the shear stress value of the T-x decreases. The relationship between main roll hoop length to normal stress and T-y shear stress is the same, namely the greater the value of the main roll hoop stress, the higher the value of normal stress and shear stress T-y. The relationship between main roll hoop length and normal stress is the greater the value of the main roll hoop length, the higher the normal stress and torsional value. Test results of normal stress, shear and torsional stress, the Chassis type B with a roll hoop height of 504 mm and the main length of the 125 mm roll hoop meet the requirements Keyword: Chassis, chassis design and analysis, Autodesk Inventor simulation, the variation of roll-hoop length, mechanical properties