I was watching youtube the other day and came across this video which made me think that my static electricity build up may be coming from rubbing between the tires and wood feet? Or the steel axles and wood feet?
Something called the Triboelectric effect.
but where is the generation happening? What I do know now is that if I drag a small wire under R2’s foot, the charge buildup does not happen or if it does, not nearly as rapidly.