by RichD » Fri Dec 30, 2016 8:21 am
Few "HO" cars are 1/64th scale, if the were they would be too wide to fit on standard set type track. HO cars average in the 1/70s for the most part. If you want to take a shot at scratch building bodies they will have to fit existing chassis, unless you are going to build those as well. If you were racing the maximum width of the car would have to be 1.3125 inches. Usually you would start with the wheelbase of the chassis that you are using and make the body fit that. Most of the time you would have to shrink or stretch some of the dimentions, so the body would not be a consistant scale, no matter what scale you were shooting for. There is also a sort of perspective problem when you shrink a body, often if the body is kept perfectly to scale it will not look right, so modelers sometime make adjustments to compensate for that effect.