I'm also facing the same issue. Hi My name is marelzarka or just mar and my team migrated from easyc to RobotC this season and as head programmer I need to know how to use this in order to accurately program the flywheel on our robot as well. Would anyone be able to link me to a tutorial either video or text on motor encoders?
Another thing that I'm also having issues with is when I assign motors to vexRT channels, they are not the ones I've specified. For example I've setup the code so that it is arcadecontrol(Ch3,Ch4); without a threshold on purpose, mainly because I don't know what the threshold does. Unfortunately the arcade control is set to channels 1 and 2 when we actually move. There is another issue. I don't know how RobotC sets which motors as the chassis for arcade control. Nor do I know why some of my motors are moving regardless of the code and cortex they are plugged into. I will replace them with new motors and a new cortex but once again there is only so much I can do without the knowledge of the forums! Any help is much appreciated!!

Thanks again!