stopper:
PVC tubing
8mm diameter
frame member:
wood
1 x 1 x 7
axle beam:
wood
1 x 1 x 10
drilled centre
5mm
frame centre:
wood
1 x 1 x 12
drilled one end
5mm diameter
wheel unit:
card disc 51mm dia
wood 1 x 1 x 3 [2]
card square 3 x 3
frame side:
wood
1 x 1 x 15
spacer:
paper or plastic straw
cut to fit
steering pin:
5mm dia. dowel
3cm
axle:
dowel
5mm dia.
15cm