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Aircraft |
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| Skyediamonds1985 | Guillows Series 800 - Stearman PT-17 | Build | 03-Jul-15 20:29 |  | | Views : 668 | | Okay so far. Now comes a bit of imagination (at least on my part). What to use to simulate cooling fins? Wrapping threads or strings? Cutting out thin slices of plastic rings? Still thinking of "quick build" I visited the local arts & crafts store and....my cooling fins were neatly packaged and waiting for me. |
| Skyediamonds1985 | Guillows Series 800 - Stearman PT-17 | Build | 03-Jul-15 20:26 |  | | Views : 555 | | Since weight was not a consideration, and plastic tubing isn't readily available in the sizes I needed, I chose hardwood dowels of two approximate sizes for each cylinder. Thinking of it as a quick build, the dowels were already round and sized to suit my needs. I only had to cut them to the approximate size of each cylinder |
| Skyediamonds1985 | Guillows Series 800 - Stearman PT-17 | Build | 03-Jul-15 20:06 |  | | Views : 623 | | I decided early on to use the plastic nose/crank case provided by Guillow's as a quick-build version of the radial. This allows me to focus more on the cylinders and some of the accessories such as intake and exhaust manifolds, spark plugs and their wiring. |
| Skyediamonds1985 | Guillows Series 800 - Stearman PT-17 | Build | 03-Jul-15 19:45 |  | | Views : 596 | | Unique characteristics of the Continental R-670 are: intake and exhaust pipes are behind the cylinders with the main exhaust manifold hidden behind in the nose, the main electrical harness is wrapped around the main crank case behind the cylinders with the front spark plug wiring routed around the cylinders to go behind, the push rods are also behind the cylinders and each cylinder has additional cooling fins for the exhaust. Those were the details I wanted to highlight on the scratch radial. Finally, the engine had to be in 1/20th scale to the aircraft model itself. |
| Skyediamonds1985 | Guillows Series 800 - Stearman PT-17 | Build | 03-Jul-15 19:30 |  | | Views : 655 | | One of the more unique characteristics of this particular radial, is the main elect. harness is located behind the cylinders, with the front spark plug wiring being diverted around the cylinders to the back, the exhaust manifold is inside the nose, and each cylinder has extra cooling fins for their own respective exhaust outlets, and the push rods are behind the cylinders as well. |
| Skyediamonds1985 | Guillows Series 800 - Stearman PT-17 | Build | 03-Jul-15 19:19 |  | | Views : 594 | | First, need to carefully observe the Continental R-670s. If they used the Lycoming R-680s, then they're designated PT-13s. Go figure. |
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