Some of the older Lionel prewar whistle impellers were made of cast metal. Part #WS-4 had four blades, and Part #WS-8 had eight blades. Here are the whistle units: WS-37 banana whistle and whistle for a 616
Does anybody made a replacement part for these impellers.
Are either of the plastic (bakelite) impellers useable for this application?
I have one or two old whistle units with bad impellers that I would fix if I could get some suitable parts.