- 11.1.5 – Premolded NACA Scoop Installation
- 11.1.5 – Premolded NACA Scoop Installation
- 11.1.5 NACA Duct modification
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl
- 11.1.6 Oil Access Door
- 11.2.2 Counterweight Fairings
- 11.1.5 Premolded NACA Duct Installation
- 11.2.1 Canard Tip Installation
- 11.2.2 Elevator Counterweight Fairings
- 11.1.3 Upper Cowl Wing Flange
- 11.1.99 Cowling Baffle Treatment
- 11.1.2 Cowling attach mod
- 11.1.8 Cowling Attachments
You may remember all the work that has been done to get the engine to fit: two of the intake tubes were replaced with custom built tubes to clear the cowling and then a hole was cut in the cowling for the main air intake.
Now it’s time to, sadly, modify the cowling so the air intake will fit.
Here’s a side, top and inside view:
I drew a shape to provide a symmetrical guide and rounded it out. Then I made the cut and sanded the surrounding area.
To prevent an “bubble” where the hole was, I made relief cuts around the opening. Then I cut a piece of foam that was a little smaller than the relief cuts to go under the cowling. I large piece of aluminum sheet went under that. Then I made a “plug” out of triax that I covered with duct tape.
Then the area was covered with two progressively larger layers of BID.