| Year | 2017 |
| Date | 23-Jun |
| Volume | 219 |
| Issue | 4,563 |
| Page | 37 |
| Category | Aeronautical |
| Part | |
| Title | The ENV Aero Engine |
| Author | Stephen Wessel |
| Notes | Continues an occasional series on the construction of an elusive prototype. Machining the crankcase, crankshaft, oil pump, water pump, cylinders |