Bruce Hansen’s Helicopter
Bruce Hansen writes: This is a Helicopter model built from a 1962 No. 10181 Action Helicopter set. I used a rubber band for a drive belt instead of string. Other than that, it was built straight from the instructions.
Bruce Hansen’s Caterpillar Tractor
Bruce Hansen writes: This Caterpillar Tractor was built from a 1950 12 1/2 set. The P55 motor and treads drive the model along at a pace of about 3 inches/second.