swapping the wheels and begining the engine

Today I obtain 3 wheels that are more in scale with the size of the plane .  You can see the old wheels from a 20 inch bike compared to the replacement from a pull golf cart.  Plus I like the white tires , very old  school.
 

the other pictures show the beginings of the motor and radiator construction.   Orignally I was going to use old beer cans but they again were out of scale.  Then I came across pineapple juice cans they will be perfect.  The radiator is created from an old tin box and black grating.  The engine is a straight 4 cylinder.