I'm currently designing a racing wheel chassis that contains a racing seat, force feedback wheel, and gas/brake pedals. I plan on adding a device that uses the audio feed from a PC or console system to move a motor that attaches to the seat or other part of the unit and vibrate it.
The base of the unit is a 2' x 6' x 1" board, supported by 4" x 4" x 4" blocks connected by 2x4's. There are 6 4x4 blocks and 7 2x4's connecting them. Looks like a digital figure 8. For the motor to be able to effectively shake the chassis, the chassis will need some form of suspension. I'm thinking that attaching it to the 4x4x4 blocks would be best.
The total weight of the unit and human shouldn't exceed 300 lbs. I'm a suspension novice and would like to know if something in the automotive field could accomplish this cheaply (under $100). If not, what else could be used?
Any information is appreciated, thanks in advance.