One rear wheel and one front wheel -
Two rear wheels and
one front wheel.
Fig. C - 4 wheels
Two rear wheels and two front wheels
6
7
8
Fig. A - 2 wheels
Fig. B - 3 wheels - A
Patent Pending
Stub Axle - see Page 4
Cassette
Short Axle
Short Axle
Long Axle
Long Axle
Medium Axle
Medium Axle
Medium Axle
