Robert
Thanks for your interest. Please tell me which engine you are looking at. I have drawings for both the Monosoupape and the Lynx, both in 1/3 scale. They are sent out as pdfs for home printing.
The prices are: Monosoupape £50
Lynx £100
Both include extensive construction notes and some photos. Both are dimensioned in inches, except for bearings & gears which are metric. Both models are extremely close to the originals. The Mono requires no castings but the Lynx needs many. I can supply these.
You can pay by Paypal. Let me know and I will send a Paypal invoice to make it easy for you.
Best regards
Wez