QuantumTM BlastTM Power Chair line is designed to give power chair users a wide range of enhanced mobility, from the kitchen to the boardroom to the streamside. Among the hallmarks of the design is the ideal blend of indoor and outdoor performance. The Blast line differs from conventional rear-wheel drive power chairs in that the main drive wheels are positioned closer to the user’s center of gravity. The placement of the batteries and front casters gives a naturally balanced feel to these power chairs, increasing stability while decreasing the overall length. All of the Blast models; the Blast 850, Blast 650, Blast HD and Blast X-TREME have a front-mounted, self-leveling caster beam. This unique design offers remarkable stability and a smoother ride when driving on uneven surfaces. The Blast line features Sport-Trac Suspension which allows the spring-loaded drive wheels to move in two directions, up for rolling over obstacles and down when encountering transitions. The active rear anti-tip wheels work in opposition to the drive wheels to eliminate the possibility of the chair losing traction when encountering obstacles, creating a safer, more secure ride. This unique suspension system helps to harness the motors’ torque to make smoother transitions in speed during acceleration or deceleration.