As part of a class I am working with a small team to convert a jazzy power chair into a line following/light seeking robot. The problem I am running into is trying to run the two 24vdc CIM motors, I can't find exact specs but it seems they each draw around 30A with a peak of 75A. I want to control the speed and direction using an arduino. The only speed controller I've found that could handle it is the Victor 883 or Victor 885, and those are too expensive. Is there a cheaper way for me to accomplish this? I want to seriously dial back the power on these motors because it moves too fast for the sensors to keep up, when hooked directly to power this thing cut grooves into the linoleum. The controller that came with the power chair was dead, which is why we got the whole thing for $100.