After messing around with Rod's (Stepsides) wedico excavator I started wondering about RC4WD's 4200 Excavator and found these vids, which I have not seen posted on here just yet and found them interested
Strength Test
http://www.youtube.com/embed/Pi0ugUjo-po
Digging Test
http://www.youtube.com/embed/WPvIpmOu_Zc
Any thoughts?
Alfy