This robot dog walks by transferring motor revolution to reciprocating motion
via crank and linkage rod. Main body and legs are made of transparent yellow
parts to allow viewing of internal mechanisms. Construction is simple as parts
can easily be attached with screws. Wiring has also been made simple. Gripping
parts at the end of each leg to change position according to speed for smooth
movement.
Four types of strides can be selected
by changing the position of the holes on crank. Put this together with two
types of gear ratios and you've got an 8-speed puppy. Cross link rods to
make movement even more fluid and real. Run on flat, smooth surfaces. Avoid
running over slopes or on bumpy roads. Attaching roller stay will allow you
to run dog on Mini 4WD course for the ultimate dog race.
Lenght: 165mm
Weight: 3.5oz.
$13.49 
Good product