How does one find out the wheel size for replacements. 33" or 36" ?
Dear quryous,
HO scale is 1:87.1,
so 33"/87.1 = 0.379", or just above 3/8" wheel tread.
36"/87.1 = 0.413" or just above 13/32" wheel tread.
Hope this helps.
Sincerely,
Joe Satnik
Quryous,
If you don't have a caliper or fine scale ruler, a good rule of thumb is freight uses 33" and passenger uses 36". There are exceptions, but this is a good 'go-by'.
Regards,
Jonathan
Quote from: jonathan on February 17, 2010, 05:05:17 PM
Quryous,
If you don't have a caliper or fine scale ruler, a good rule of thumb is freight uses 33" and passenger uses 36". There are exceptions, but this is a good 'go-by'.
Regards,
Jonathan
Except for modern 100ton frieght cars, which are almost always 36"; and the newest 125ton coal cars which have 38" wheels. Autoflats often have 28" wheels, and intermodal double stacks are often a mixture with 70ton trucks at the ends (33" wheels) and 125 ton trucks in the middle (38" wheels).
Thank you. Very helpful.