This design is kept extremely unbalanced on the left side of the wheel. Four weighted rollers are always out on the left side of the wheel. Rollers are bearing mounted and must be large enough in diameter to turn freely inside the ramp in the compressed state. Click the link below for a enlarged gravity roller wheel drawing. Spring tension is kept to a minimum. Only enough tension is used to keep the rollers pushed out when they leave the ramp. #8 and #5 cancel. Will it work? I don't know.