My board just started making this noise. It happens on both sides and only occurs when there is weight on the board. I took everything apart to clean it for the first time in 6 months and now it does this.
Also, my back truck looks like its starting to bend. Could this be the problem?
Sounds like the pulley is engaging your belt teeth oddly, could be that back truck. When you hand spin the wheel, does the belt track off to one side or stay centered?
Could be.
Does the board making noises when you just stand on it and laying around without engaging the motors?
I would swap the front and rear hanger if you think the back one is bending it can misaligned the entire drive train