Years ago, a fellow by the name of Lloyd Butler built a model of the 1903 wright flyer engine.Lloyd has since passed, but his
model I believe is in the museum run by a man named Knapp in Arizona. This model was also on the cover of StriclyIC publication from the early or mid 90's. I think it was issue 41. Back issues are still available. Lloyd didn't make plans,
at his estate auction I looked for anything related to his model but came up empty. I think alot of his info was considered
garbage by his family and trashed before the auction. He was very proud of this engine because it had not been modeled before, and its historical significance. He told me he had contacted the Smithsonian and had recieved some information from them. Lloyd was a pilot who used to ferry new Piper Cubs all over the world. He also built two mini mustangs in his home
garage with help from his wife. Lloyd is the only two time grand champion in the all metal catagory at the EEA. flyin at Oshgosh. He had many contacts in the aircraft comunity to help him get this information on the engine so I don't know if this info is available to just anyone. I don't know if this is of any help to you but I think you may be able to view it on the net at the website for Mr. Knapp's museum. I don't know it offhand but I'm sure others might be able to point you in the right direction. sorry for the length of reply maybe this will help you Good luck, Dave.