RE: Sterling PT-17
Good Morning StearmanLover. Yes, I too have the original vacuum formed engine on the sheet as it came in the kit.( I also have the aluminum cowl aslo, but a coweled PT-17 is Blasphamy!!) However, it is cracked in a couple of places,mainly where the cyl and the crankcase come together. Looks like the plastic got real thin during the forming process. I was worried that a 4 stroke engine would shake it apart. Does anyone know how to reinforce these vacuum formed engine halves? I thought of filling the cylinders with expandable foam, after assembly. Just a thought. Your Idea of fiberglass replica is intreging. Have you ever tried to cast such a complex mold before? Fiberglass would be Ideal if it looked decent.
CC